application/pdf | Revchem Composites

30VE8153_TDS.pdf

by | Sep 27, 2025

All specifications and properties specified above are approximate. Specifications and properties of material delivered may vary slightly
from those given above. Interplastic Corporation makes no representations of fact regarding the material except those specified above.
No person has any authority to bind Interplastic Corporation to any representation except those specified above. Final determination of
the suitability of the material for the use contemplated is the sole responsibility of the Buyer. Our technical sales representatives will
assist in developing procedures to fit individual requirements, but all advice is accepted at your risk and should be checked for
suitability to your particular processes. These test data and properties are based on results obtained for a specific material under the
specified test conditions. They are not to be used as specifications and are not warranted as performance attributes for any product or
system. Specifications and properties of standard production material may vary slightly from those in this report. Interplastic
Corporation makes no warranties regarding any material and/or samples described in this report unless that representation is provided
to your company in writing by a Technical Director of Interplastic Corporation or one of his or her managers.

INTERPLASTIC CORPORATION
2015 Northeast Broadway Street
Minneapolis, Minnesota 55413-1775
651.481.6860 Fax 612.331.4235
www.interplastic.com
Revised: 5/17

CORVE8153 is a promoted, thixotropic, high heat distortion temperature (270 F/132 C), vinyl ester resin for use in the
manufacture of master tools and molds.

FEATURES BENEFITS
High Heat Distortion Resistance Excellent dimensional stability for long-lived parts
Excellent Solvent Resistance Resists deterioration over time
Versatile Application System Can be used in hand lay-up and spray-up
Good Fiberglass Wet-Out Easy roll-out and high laminate physical properties
Promoted for Ease of Application Good gelation properties with low foaming quality

RELATED PRODUCTS GEL TIME
CORVE8151 15-20 Minutes

LIQUID PROPERTIES RESULTS
Viscosity, Brookfield Model LV #3 Spindle @ 60 rpm, 77 F (25 C), cps 550-750
Thixotropic Index 3.0-3.5
100 grams resin @ 77 F (25 C), initiated with 1.2% MEKP-925H by volume *
Gel Time, min:sec 20:00-26:00
Gel to Peak Exotherm Time, min:sec 10:00-19:00
Peak Exotherm 360-435 F (182-224 C)
Non-Volatile Content, % 52.0-56.0
Hazardous Air Pollutant (Styrene) Content, % 44.0-48.0
Specific Gravity 1.05-1.08

TYPICAL PROPERTIES
Thickness 1/8 inch (3.2 mm) Casting
Construction Not Applicable
Flexural Strength, ASTM D790 18,000 psi 124 MPa
Flexural Modulus, ASTM D790 4.8 x 10
5
psi 3,310 MPa
Tensile Strength, ASTM D638 11,400 psi 79 MPa
Tensile Modulus, ASTM D638 5.4 x 10
5
psi 3,724 MPa
Tensile Elongation, ASTM D638 3.5 % 3.5 %
Barcol Hardness, 934-1 gauge, ASTM D2583 35 35
Heat Distortion Temperature, ASTM D648 270 F 132 C
* Gel time and reactivity will vary due to the type and concentration of Free Radical Initiator (commonly called catalyst ), shop temperature, humidity, and type of fillers
used. In order to meet your individual needs consult our technical sales representative for assistance. See following page for proper selection and application of Free
Radical Initiators.
To reduce fiber print-through, we suggest a 1 oz/ft
2
(460 g/m
2
) glass mat, then a 1.0 oz/ft
2
(305 g/m
2
) cloth, followed by a 1 oz/ft
2
(460 g/m
2
) mat behind a high heat
distortion tooling gel coat. After the first laminate has gone through exotherm and has returned to room temperature the laminate schedule may begin. We recommend
an all vinyl ester tool for the highest heat distortion and cycle resistance, and a minimum of a 3/8″ (9.525 mm) vinyl ester laminate if the part is to be reinforced with
another high heat distortion laminating resin.

CORVE8153
Vinyl Ester Resin
Technical Data Sheet

All specifications and properties specified above are approximate. Specifications and properties of material delivered may vary slightly
from those given above. Interplastic Corporation makes no representations of fact regarding the material except those specified above.
No person has any authority to bind Interplastic Corporation to any representation except those specified above. Final determination of
the suitability of the material for the use contemplated is the sole responsibility of the Buyer. Our technical sales representatives will
assist in developing procedures to fit individual requirements, but all advice is accepted at your risk and should be checked for
suitability to your particular processes. These test data and properties are based on results obtained for a specific material under the
specified test conditions. They are not to be used as specifications and are not warranted as performance attributes for any product or
system. Specifications and properties of standard production material may vary slightly from those in this report. Interplastic
Corporation makes no warranties regarding any material and/or samples described in this report unless that representation is provided
to your company in writing by a Technical Director of Interplastic Corporation or one of his or her managers.

INTERPLASTIC CORPORATION
2015 Northeast Broadway Street
Minneapolis, Minnesota 55413-1775
651.481.6860 Fax 612.331.4235
www.interplastic.com
Revised: 5/17

INITIATOR SELECTION AND APPLICATION

The method of application is critical to ensure that the finished part will have the desired properties.

The selection of initiator is very important. We currently recommend three brands of MEKP initiator: Cadox L-50a,
Luperox DHD-9, and Norox MEKP-925H. The use of other initiators is not recommended. If an initiator not on this
recommended list is used, the customer must establish its suitability for the application, as well as assume liability.

Use of the correct amount of initiator is also very important to ensure that the laminate cures sufficiently to obtain optimum
physical properties. When laminates 1/16th of an inch thick (0.75 mm) or thinner are constructed, the amount of initiator
should be a minimum of 1.5 percent based on the resin. The typical range of initiator is 1.7 to 2.0 percent for this
thickness. Thinner laminates require higher percentages of initiator. No benefit is seen using levels of greater than 3.0
percent, with levels of 1.0 to 3.0% recommended in the construction of laminates out of vinyl ester resins. The typical
percentage of initiator used to construct laminates greater than 1/8th of an inch (3.175 mm) thick is 1.0 to 1.2 percent.

When applying the vinyl ester as a skin coat or laminate, the gel coat should be prepared and cured normally. Initially a
coating of vinyl ester resin should be applied to wet the gel coat surface, then fiberglass may be chopped or layered on
the resin. Do not over-spray when chopping glass onto the surface. Dry fiberglass should not lie directly on the gel coat
because this can cause premature blistering of the part. The best way to ensure no over-spray is to stop chopping one to
two feet (30-60 cm) from the edge of the vinyl ester resin layer which has dry gel coat adjacent.

The vinyl ester skin coat should be allowed to cure from one to four hours, depending on the gel time of resin being used,
the ambient temperature, and the temperature of the mold. Interplastic Corporation will provide timetable guidelines for
when the skin coat is ready to be laminated. The skin coat may be left overnight before applying subsequent coats;
however, the skin coat should not be left for longer than 24 hours because of the risk of delamination within the
composite. The surface of the skin coat should be tacky to the touch to ensure proper bonding between layers. If the
surface is not tacky, it should be thoroughly roughed up with medium grade sandpaper and cleaned before applying the
next layer to ensure a good bond.

Cadox is a registered trademark of Akzo Nobel Chemicals B.V. or its affiliates in one or more territories.
Luperox is a registered trademark of Arkema Inc.
Norox is a registered trademark of United Initiators.

30VE8153-5_TDS.pdf

by | Sep 27, 2025

All specifications and properties specified above are approximate. Specifications and properties of material delivered may vary slightly
from those given above. Interplastic Corporation makes no representations of fact regarding the material except those specified above.
No person has any authority to bind Interplastic Corporation to any representation except those specified above. Final determination of
the suitability of the material for the use contemplated is the sole responsibility of the Buyer. Our technical sales representatives will
assist in developing procedures to fit individual requirements, but all advice is accepted at your risk and should be checked for
suitability to your particular processes. These test data and properties are based on results obtained for a specific material under the
specified test conditions. They are not to be used as specifications and are not warranted as performance attributes for any product or
system. Specifications and properties of standard production material may vary slightly from those in this report. Interplastic
Corporation makes no warranties regarding any material and/or samples described in this report unless that representation is provided
to your company in writing by a Technical Director of Interplastic Corporation or one of his or her managers.

INTERPLASTIC CORPORATION
2015 Northeast Broadway Street
Minneapolis, Minnesota 55413-1775
651.481.6860 Fax 612.331.4235
www.interplastic.com
Revised: 5/17

CORVE8153 is a promoted, thixotropic, high heat distortion temperature (270 F/132 C), vinyl ester resin for use in the
manufacture of master tools and molds.

FEATURES BENEFITS
High Heat Distortion Resistance Excellent dimensional stability for long-lived parts
Excellent Solvent Resistance Resists deterioration over time
Versatile Application System Can be used in hand lay-up and spray-up
Good Fiberglass Wet-Out Easy roll-out and high laminate physical properties
Promoted for Ease of Application Good gelation properties with low foaming quality

RELATED PRODUCTS GEL TIME
CORVE8151 15-20 Minutes

LIQUID PROPERTIES RESULTS
Viscosity, Brookfield Model LV #3 Spindle @ 60 rpm, 77 F (25 C), cps 550-750
Thixotropic Index 3.0-3.5
100 grams resin @ 77 F (25 C), initiated with 1.2% MEKP-925H by volume *
Gel Time, min:sec 20:00-26:00
Gel to Peak Exotherm Time, min:sec 10:00-19:00
Peak Exotherm 360-435 F (182-224 C)
Non-Volatile Content, % 52.0-56.0
Hazardous Air Pollutant (Styrene) Content, % 44.0-48.0
Specific Gravity 1.05-1.08

TYPICAL PROPERTIES
Thickness 1/8 inch (3.2 mm) Casting
Construction Not Applicable
Flexural Strength, ASTM D790 18,000 psi 124 MPa
Flexural Modulus, ASTM D790 4.8 x 10
5
psi 3,310 MPa
Tensile Strength, ASTM D638 11,400 psi 79 MPa
Tensile Modulus, ASTM D638 5.4 x 10
5
psi 3,724 MPa
Tensile Elongation, ASTM D638 3.5 % 3.5 %
Barcol Hardness, 934-1 gauge, ASTM D2583 35 35
Heat Distortion Temperature, ASTM D648 270 F 132 C
* Gel time and reactivity will vary due to the type and concentration of Free Radical Initiator (commonly called catalyst ), shop temperature, humidity, and type of fillers
used. In order to meet your individual needs consult our technical sales representative for assistance. See following page for proper selection and application of Free
Radical Initiators.
To reduce fiber print-through, we suggest a 1 oz/ft
2
(460 g/m
2
) glass mat, then a 1.0 oz/ft
2
(305 g/m
2
) cloth, followed by a 1 oz/ft
2
(460 g/m
2
) mat behind a high heat
distortion tooling gel coat. After the first laminate has gone through exotherm and has returned to room temperature the laminate schedule may begin. We recommend
an all vinyl ester tool for the highest heat distortion and cycle resistance, and a minimum of a 3/8″ (9.525 mm) vinyl ester laminate if the part is to be reinforced with
another high heat distortion laminating resin.

CORVE8153
Vinyl Ester Resin
Technical Data Sheet

All specifications and properties specified above are approximate. Specifications and properties of material delivered may vary slightly
from those given above. Interplastic Corporation makes no representations of fact regarding the material except those specified above.
No person has any authority to bind Interplastic Corporation to any representation except those specified above. Final determination of
the suitability of the material for the use contemplated is the sole responsibility of the Buyer. Our technical sales representatives will
assist in developing procedures to fit individual requirements, but all advice is accepted at your risk and should be checked for
suitability to your particular processes. These test data and properties are based on results obtained for a specific material under the
specified test conditions. They are not to be used as specifications and are not warranted as performance attributes for any product or
system. Specifications and properties of standard production material may vary slightly from those in this report. Interplastic
Corporation makes no warranties regarding any material and/or samples described in this report unless that representation is provided
to your company in writing by a Technical Director of Interplastic Corporation or one of his or her managers.

INTERPLASTIC CORPORATION
2015 Northeast Broadway Street
Minneapolis, Minnesota 55413-1775
651.481.6860 Fax 612.331.4235
www.interplastic.com
Revised: 5/17

INITIATOR SELECTION AND APPLICATION

The method of application is critical to ensure that the finished part will have the desired properties.

The selection of initiator is very important. We currently recommend three brands of MEKP initiator: Cadox L-50a,
Luperox DHD-9, and Norox MEKP-925H. The use of other initiators is not recommended. If an initiator not on this
recommended list is used, the customer must establish its suitability for the application, as well as assume liability.

Use of the correct amount of initiator is also very important to ensure that the laminate cures sufficiently to obtain optimum
physical properties. When laminates 1/16th of an inch thick (0.75 mm) or thinner are constructed, the amount of initiator
should be a minimum of 1.5 percent based on the resin. The typical range of initiator is 1.7 to 2.0 percent for this
thickness. Thinner laminates require higher percentages of initiator. No benefit is seen using levels of greater than 3.0
percent, with levels of 1.0 to 3.0% recommended in the construction of laminates out of vinyl ester resins. The typical
percentage of initiator used to construct laminates greater than 1/8th of an inch (3.175 mm) thick is 1.0 to 1.2 percent.

When applying the vinyl ester as a skin coat or laminate, the gel coat should be prepared and cured normally. Initially a
coating of vinyl ester resin should be applied to wet the gel coat surface, then fiberglass may be chopped or layered on
the resin. Do not over-spray when chopping glass onto the surface. Dry fiberglass should not lie directly on the gel coat
because this can cause premature blistering of the part. The best way to ensure no over-spray is to stop chopping one to
two feet (30-60 cm) from the edge of the vinyl ester resin layer which has dry gel coat adjacent.

The vinyl ester skin coat should be allowed to cure from one to four hours, depending on the gel time of resin being used,
the ambient temperature, and the temperature of the mold. Interplastic Corporation will provide timetable guidelines for
when the skin coat is ready to be laminated. The skin coat may be left overnight before applying subsequent coats;
however, the skin coat should not be left for longer than 24 hours because of the risk of delamination within the
composite. The surface of the skin coat should be tacky to the touch to ensure proper bonding between layers. If the
surface is not tacky, it should be thoroughly roughed up with medium grade sandpaper and cleaned before applying the
next layer to ensure a good bond.

Cadox is a registered trademark of Akzo Nobel Chemicals B.V. or its affiliates in one or more territories.
Luperox is a registered trademark of Arkema Inc.
Norox is a registered trademark of United Initiators.

30VE8151D_TDS.pdf

by | Sep 27, 2025

Interplastic Corporation makes no warranties regarding any material and/or samples described in this report. All properties
specified above are approximate and may vary from material delivered. Delivered material complies with the certificate of
analysis on each shipment of product. Interplastic Corporation makes no representations of fact regarding the material
except those specified above. Final determination of part or application and the suitability of the material for the use
contemplated is the sole responsibility of the buyer. Our technical sales representatives will assist in developing procedures
to fit individual requirements as a customer accommodation, but all advice is accepted at your risk and should be checked for
suitability to your particular processes and needs. These test data and properties are based on results obtained for a specific
material under the specified test conditions – they are not to be used as specifications and are not warranted as performance
attributes for any product or system.

INTERPLASTIC CORPO RATION
2015 Northeast Broadway Street
Minneapolis, Minnesota 55413-1775
651.481.6860 Fax 612.331.4235
www.interplastic.com
Revised: 8/16

CORVE8151 is a promoted, thixotropic, high heat distortion temperature (270 F/132 C), vinyl ester resin for use in the
manufacture of master tools and molds.

FEATURES BENEFITS
High Heat Distortion Resistance Excellent dimensional stability for long-lived parts
Excellent Solvent Resistance Resists deterioration over time
Versatile Application System Can be used in hand lay-up and spray-up
Good Fiberglass Wet-Out Easy roll-out and high laminate physical properties
Promoted for Ease of Application Good gelation properties with low foaming quality

RELATED PRODUCTS GEL TIME
CORVE8153 20-26 Minutes

LIQUID PROPERTIES RESULTS
Viscosity, Brookfield Model LV #3 Spindle @ 60 rpm, 77 F (25 C), cPs 550-750
Thixotropic Index 3.0-3.5
100 grams resin @ 77 F (25 C), initiated with 1.2% MEKP-925H by volume *
Gel Time, min:sec 15:00-20:00
Gel to Peak Exotherm Time, min:sec 7:00-14:00
Peak Exotherm 360-435 F (182-224 C)
Non-Volatile Content, % 52.0-56.0
Hazardous Air Pollutant (Styrene) Content, % 44.0-48.0
Specific Gravity 1.00-1.09

TYPICAL PROPERTIES
Thickness 1/8 inch (3.2 mm) Casting
Construction Not Applicable
Flexural Strength, ASTM D790 18,000 psi 124 MPa
Flexural Modulus, ASTM D790 4.8 x 10
5
psi 3,310 MPa
Tensile Strength, ASTM D638 11,400 psi 79 MPa
Tensile Modulus, ASTM D638 5.4 x 10
5
psi 3,724 MPa
Tensile Elongation, ASTM D638 3.5 % 3.5 %
Barcol Hardness, 934-1 gauge, ASTM D2583 35 35
Heat Distortion Temperature, ASTM D648 270 F 132 C
* Gel time and reactivity will vary due to the type and concentration of Free Radical Initiator (commonly called catalyst ), shop temperature, humidity, and type of filler
used. In order to meet your individual needs, consult our technical sales representative for assistance. See following page for proper selection and application of Free
Radical Initiators.
To reduce fiber print-through, we suggest a 1 oz/ft
2
(460 g/m
2
) glass mat, then a 1.0 oz/ft
2
(305 g/m
2
) cloth, followed by a 1 oz/ft
2
(460 g/m
2
) mat behind a high heat
distortion temperature tooling gel coat. After the first laminate has gone through exotherm and has returned to room temperature the laminate schedule may begin. We
recommend an all-vinyl-ester tool for the highest heat distortion temperature and cycle resistance, and a minimum of a 3/8″ (9.525 mm) vinyl ester laminate if the part is
to be reinforced with another high heat distortion temperature laminating resin.

CORVE8151
Vinyl Ester Resin
Technical Data Sheet

Interplastic Corporation makes no warranties regarding any material and/or samples described in this report. All properties
specified above are approximate and may vary from material delivered. Delivered material complies with the certificate of
analysis on each shipment of product. Interplastic Corporation makes no representations of fact regarding the material
except those specified above. Final determination of part or application and the suitability of the material for the use
contemplated is the sole responsibility of the buyer. Our technical sales representatives will assist in developing procedures
to fit individual requirements as a customer accommodation, but all advice is accepted at your risk and should be checked for
suitability to your particular processes and needs. These test data and properties are based on results obtained for a specific
material under the specified test conditions – they are not to be used as specifications and are not warranted as performance
attributes for any product or system.

INTERPLASTIC CORPO RATION
2015 Northeast Broadway Street
Minneapolis, Minnesota 55413-1775
651.481.6860 Fax 612.331.4235
www.interplastic.com
Revised: 8/16

INITIATOR SELECTION AND APPLICATION

The method of application is critical to ensure that the finished part will have the desired properties.

The selection of initiator is very important. We currently recommend three brands of MEKP initiator: Cadox L-50a,
Luperox DHD-9, and Norox MEKP-925H. The use of other initiators is not recommended. If an initiator not on this
recommended list is used, the customer must establish its suitability for the application, as well as assume liability.

Use of the correct amount of initiator is also very important to ensure that the laminate cures sufficiently to obtain optimum
physical properties. When laminates 1/16th of an inch thick (0.75 mm) or thinner are constructed, the amount of initiator
should be a minimum of 1.5 percent based on the resin. The typical range of initiator amounts is 1.7 to 2.0 percent for this
thickness. Thinner laminates require higher percentages of initiators. No benefit is seen using levels greater than 3.0
percent, with levels of 1.0 to 3.0% recommended in the construction of laminates out of vinyl ester resins. The typical
percentage of initiator used to construct laminates greater than 1/8th of an inch (3.175 mm) thick is 1.0 to 1.2 percent.

When applying the vinyl ester as a skin coat or laminate, the gel coat should be prepared and cured normally. Initially a
coating of vinyl ester resin should be applied to wet the gel coat surface; then fiberglass may be chopped or layered on
the resin. Do not over-spray when chopping glass onto the surface. Dry fiberglass should not lie directly on the gel coat
because this can cause premature blistering of the part. The best way to ensure no over-spray is to stop chopping 1-2 feet
(30-60 cm) from the edge of the vinyl ester resin layer that has dry gel coat adjacent.

The vinyl ester skin coat should be allowed to cure from one to four hours, depending on the gel time of resin being used,
the ambient temperature, and the temperature of the mold. Interplastic Corporation will provide timetable guidelines for
when the skin coat is ready to be laminated. The skin coat may be left overnight before applying subsequent coats;
however, the skin coat should not be left for longer than 24 hours because of the risk of delamination within the
composite. The surface of the skin coat should be tacky to the touch to ensure proper bonding between layers. If the
surface is not tacky it should be thoroughly roughed up with medium grade sandpaper and cleaned before applying the
next layer to ensure a good bond.

Cadox is a registered trademark of Nouryon Functional Chemicals B.V. or affiliates in one or more territories.
Luperox is a registered trademark of Arkema, Inc.
Norox is a registered trademark of United Initiators Spi, Inc.

30VE8129D_TDS.pdf

by | Sep 27, 2025

Interplastic Corporation makes no warranties regarding any material and/or samples described in this report. All properties
specified above are approximate and may vary from material delivered. Delivered material complies with the certificate of
analysis on each shipment of product. Interplastic Corporation makes no representations of fact regarding the material
except those specified above. Final determination of part or application and the suitability of the material for the use
contemplated is the sole responsibility of the buyer. Our technical sales representatives will assist in developing procedures
to fit individual requirements as a customer accommodation, but all advice is accepted at your risk and should be checked for
suitability to your particular processes and needs. These test data and properties are based on results obtained for a specific
material under the specified test conditions – they are not to be used as specifications and are not warranted as performance
attributes for any product or system.

INTERPLASTIC CORPORATION
2015 Northeast Broadway Street
Minneapolis, Minnesota 55413-1775
651.481.6860 Fax 612.331.4235
www.interplastic.com
Revised: 8/16

CORVE8129
Thixotropic Vinyl Ester Resin
Technical Data Sheet

CORVE8129 is a promoted, thixotropic, vinyl ester resin used in spray-up and hand lay-up applications. It is specifically
formulated for the boat, pool, spa manufacture, and may also be used in other applications that require high physical
properties and excellent fatigue performance.

FEATURES BENEFITS
Moderate Laminate Exotherm Good cosmetic surface and minimal glass print
Fast Trim Time Shorter cycle time and fast Barcol development
Good Fiberglass Wet-Out Easy roll-out and high laminate physical properties
Promoted for Ease of Application Good gelation properties with low foaming quality
Excellent Fatigue Performance 1 Long service life for composites under loading
Low Water Absorption and Excellent Blister Resistance 2 Eliminates need for repairing blisters in composites
immersed in water
Retention of Physical Properties after Immersion in Water
for 15 Years 3
Minimal to no loss of physical properties after long term
exposure to water

RELATED PRODUCTS GEL TIME MEKP Level, % by weight
CORVE8115 10-15 Minutes 1.2
CORVE8117 15-20 Minutes 1.2
CORVE8119 20-25 Minutes 1.2
CORVE8121 25-30 Minutes 1.2
CORVE8123 32-37 Minutes 1.2

LIQUID PROPERTIES RESULTS
Viscosity, Brookfield Model LV, #3 Spindle @ 60 rpm, 77 F (25 C), cPs 475-675
Thixotropic Index 2.5-3.2
100 grams resin @ 77 F (25 C), initiated with 1.4% MEKP-925H by weight *
Gel Time, min:sec 35:00-45:00
Gel to Peak Exotherm Time, min:sec 10:00-20:00
Peak Exotherm 300-370 F (149-188 C)
Non-Volatile Content, % 51.0-56.0
Specific Gravity 1.00-1.03

TYPICAL PROPERTIES
Thickness 1/8 inch (3.2 mm) Casting 1/8 inch (3.2 mm) Laminate
Construction Not Applicable 4 Plies 1.5 oz/ft
2
, 33% Glass Mat
Flexural Strength, ASTM D790 19,000 psi 131 MPa 32,600 psi 225 MPa
Flexural Modulus, ASTM D790 4.7 x 10
5
psi 3,240 MPa 11.0 x 10
5
psi 7,586 MPa
Tensile Strength, ASTM D638 11,800 psi 81 MPa 16,300 psi 112 MPa
Tensile Modulus, ASTM D638 4.0 x 10
5
psi 2,760 MPa 11.0 x 10
5
psi 7,586 MPa
Tensile Elongation, ASTM D638 4.5 % 4.5 % 2.0 % 2.0 %
Barcol Hardness, 934-1 gauge, ASTM D2583 34 34 47 47
Heat Distortion Temperature, ASTM D648 210 F 99 C — —
* Gel time and reactivity will vary due to the type and concentration of Free Radical Initiator (catalyst), shop temperature, humidity, and type of fillers used. In order to meet
your individual needs consult our technical sales representative for assistance. If using methyl ethyl ketone peroxide (MEKP) to gel and cure CoREZYN

vinyl ester resins
we recommend only these three brands: Cadox L-50a (Nouryon); Luperox DHD-9 (Arkema); or Norox MEKP-925H (United Initiators). These must be used at the
appropriate percentage and suitable temperature. Contact your Interplastic Corporation representative for assistance.

1. Cycle Test Evaluation of Various Polyester Types and a Mathematical Model for Projecting Flexural Fatigue Endurance
2. A 15-Year Study of the Effective Use of Permeation Barriers in Marine Composites
3. Physical Properties Evaluation of FRP Composites after 15-Year Immersion in Water

30VE8125-30D_TDS.pdf

by | Sep 27, 2025

Interplastic Corporation makes no warranties regarding any material and/or samples described in this report. All properties
specified above are approximate and may vary from material delivered. Delivered material complies with the Certificate of
Analysis on each shipment of product. Interplastic Corporation makes no representations of fact regarding the material
except those specified above. Final determination of part or application and the suitability of the material for the use
contemplated is the sole responsibility of the buyer. Our technical sales representatives will assist in developing procedures
to fit individual requirements as a customer accommodation, but all advice is accepted at your risk and should be checked for
suitability to your particular processes and needs. These test data and properties are based on results obtained for a specific
material under the specified test conditions – they are not to be used as specifications and are not warranted as performance
attributes for any product or system.
INTERPLASTIC CORPORATION
2015 Northeast Broadway Street
Minneapolis, Minnesota 55413-1775
651.481.6860 Fax 612.331.4235
www.interplastic.com
Revised: 10/17

CORVE8125-30
Thixotropic Vinyl Ester Resin
Technical Data Sheet

CORVE8125-30 is a promoted, thixotropic 100% vinyl ester resin used in spray-up and hand lay-up applications.
CORVE8125-30 is formulated to contain lower styrene concentrations than CORVE8123. It is specifically formulated for
boat, pool, and spa manufacture, and may also be used in other applications that require high physical properties and
excellent fatigue performance.

FEATURES BENEFITS
Moderate Laminate Exotherm Good cosmetic surface and minimal glass print
Fast Trim Time Shorter cycle time and fast Barcol development
Good Fiberglass Wet-Out Easy roll-out and high laminate physical properties
Promoted for Ease of Application Good gelation properties with low foaming quality
Excellent Fatigue Performance 1 Long service life for composites under loading
Low Water Absorption and Excellent Blister
Resistance 2
Eliminates need for repairing blisters in composites
immersed in water
Retention of Physical Properties After Immersion in
Water for 15 Years 3
Minimal to zero loss of physical properties after long
term exposure to water

RELATED PRODUCT S GEL TIME
CORVE8125-40 40-50 Minutes

LIQUID PROPERTIES RESULTS
Viscosity, Brookfield Model LV #3 Spindle @ 60 rpm, 77 F (25 C), cPs 450-600
Thixotropic Index 2.4-3.0
100 grams resin @ 77 F (25 C), initiated with 1.2% MEKP-925H by volume *
Gel Time, min:sec 30:00-40:00
Gel to Peak Exotherm Time, min:sec 8:00-25:00
Peak Exotherm 325-375 F (163-191 C)
HAP (Styrene) Content, % 35.0-40.0
Specific Gravity 1.02-1.05

TYPICAL PROPERTIES
Thickness 1/8 inch (3.2 mm) Casting 1/8 inch (3.2 mm) Laminate
Construction Not Applicable 4 Plies 1.5 oz/ft
2
, 33% Glass Mat
Flexural Strength, ASTM D790 20,300 psi 140 MPa 37,055 psi 256 MPa
Flexural Modulus, ASTM D790 5.12 x 10
5
psi 3,530 MPa 12.1 x 10
5
psi 8,345 MPa
Tensile Strength, ASTM D638 11,600 psi 80.0 MPa 24,401 psi 168 MPa
Tensile Modulus, ASTM D638 5.07 x 10
5
psi 3,500 MPa 14.1 x 10
5
psi 9,752 MPa
Tensile Elongation, ASTM D638 3.3 % 3.3 % 2.3 % 2.3 %
Barcol Hardness, 934-1 gauge, ASTM D2583 41 41 50-54 50-54
Heat Distortion Temperature, ASTM D648 230 F 110 C — F — C
* Gel time and reactivity will vary due to the type and concentration of Free Radical Initiator (catalyst), shop temperature, humidity, and type of fillers used. In order to meet
your individual needs, consult our technical sales representative for assistance. If using methyl ethyl ketone peroxide (MEKP) to gel and cure CoREZYN

vinyl ester
resins, we recommend only these three brands: Cadox L-50a (Nouryon); Luperox DHD-9 (Arkema); and Norox MEKP-925H (United Initiators). These must be used
at the appropriate percentage and suitable temperature. Contact your Interplastic Corporation representative for assistance.

1. Cycle Test Evaluation of Various Polyester Types and a Mathematical Model for Projecting Flexural Fatigue Endurance
2. A 15-Year Study of the Effective Use of Permeation Barriers in Marine Composites
3. Physical Properties Evaluation of FRP Composites after 15-Year Immersion in Water
NOTE: The technical papers above are available as .pdf files at www.interplastic.com.

30VE8117_TDS.pdf

by | Sep 27, 2025

All specifications and properties specified above are approximate. Specifications and properties of material delivered may vary slightly
from those given above. Interplastic Corporation makes no representations of fact regarding the material except those specified above.
No person has any authority to bind Interplastic Corporation to any representation except those specified above. Final determination of
the suitability of the material for the use contemplated is the sole responsibility of the Buyer. The Thermoset Resins Division’s technical
sales representatives will assist in developing procedures to fit individual requirements.

INTERPLASTIC CORPORATION
2015 Northeast Broadway Street
Minneapolis, Minnesota 55413-1775
651.481.6860 Fax 612.331.4235
www.interplastic.com

Revised: 7/11

CORVE8117
Thixotropic Vinyl Ester Resin
Technical Data Sheet

CORVE8117 is a promoted, thixotropic, vinyl ester resin used in spray-up and hand lay-up applications. It is specifically
formulated for the boat, pool, spa manufacturing industries as well as those industries that desire high physical properties
and excellent fatigue performance.

FEATURES BENEFITS
Moderate Laminate Exotherm Good cosmetic surface and minimal glass print
Fast Trim Time Shorter cycle time and fast Barcol development
Good Fiberglass Wet-Out Easy roll-out and high laminate physical properties
Promoted for Ease of Application Good gela tion properties with low foaming quality
Excellent Fatigue Performance 1 Long service life for composites under loading
Low Water Absorption and Excellent Blister Resistance 2 Eliminated need for repairing blisters in composites immersed
in water
Retention of Physical Properties After Immersion in Water for
15 Years
3
Minimal to no loss of physical properties after long term
exposure to water

RELATED PRODUCTS GEL TIME MEKP Level, % by weight
CORVE8115 10-15 Minutes 1.2
CORVE8119 20-25 Minutes 1.2
CORVE8121 25-30 Minutes 1.2
CORVE8123 32-37 Minutes 1.2
CORVE8129 35-45 Minutes 1.4

LIQUID PROPERTIES RESULTS
Viscosity, Brookfield Model LV #3 Spindle @ 60 rpm, 77 F (25 C), cps 400-600
Thixotropic Index 2.5-3.2
100 grams resin @ 77 F (25 C), initiated with 1.2% Hi-Point 90 by volume *
Gel Time, min:sec 15:00-20:00
Gel to Peak Exotherm Time, min:sec 7:00-15:00
Peak Exotherm 320-380 F (160-193 C)
Non-Volatile Content, % 51.0-56.0
Hazardous Air Pollutant (Styrene) Content, % 44.0-49.0
Specific Gravity 1.00-1.04

TYPICAL PROPERTIES
Thickness 1/8 inch (3.2 mm) Casting 1/8 inch (3.2 mm) Laminate
Construction Not Applicable 4 Plies 1.5 oz/ft
2
, 33% Glass Mat
Flexural Strength, ASTM D790 19 ,000 psi 131 MPa 32,600 psi 225 MPa
Flexural Modulus, ASTM D790 4.7 x 10
5
psi 3,240 MPa 11.0 x 10
5
psi 7,586 MPa
Tensile Strength, ASTM D638 11,800 psi 81 MPa 16,300 psi 112 MPa
Tensile Modulus, ASTM D638 4.0 x 10
5
psi 2,760 MPa 11.0 x 10
5
psi 7,586 MPa
Tensile Elongation, ASTM D638 4.5 % 4.5 % 2.0 % 2.0 %
Barcol Hardness, 934-1 gauge, ASTM D2583 34 34 47 47
Heat Distortion Temperature, ASTM D648 210 F 99 C — —
* The gel time and reactivity will vary due to the type and concentration of Free Radical Initiator (catalyst), shop temperature, humidity, and type of fillers used. In order to
meet your individual needs consult our technical sales representative for assistance. If using methyl ethyl ketone peroxide (MEKP) to gel and cure CoREZYN

vinyl
esters, we recommend only these four brands: Cadox L-50a (Akzo Nobel); Luperox DHD-9 (Arkema); Hi-Point 90 (Pergan); or Norox MEKP-925 (Syrgis). These
must be used at the appropriate percentage and suitable temperature. Contact your Interplastic Corporation representative for assistance.
1. Cycle Test Evaluation of Various Polyester Types and a Mathematical Model for Projecting Flexural Fatigue Endurance
2. A 15-Year Study of the Effective Use of Permeation Barriers in Marine Composites
3. Physical Properties Evaluation of FRP Composites After 15-Year Immersion in Water

NOTE: The technical papers above are available as PDF files on the www.interplastic.com web site.

30VE8117-5_TDS.pdf