Sprayable skin composition and method of applying
First Claim
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1. A sprayable skin composition for use in reinforcing plastic products comprising:
- about 15% to about 25% by weight of said sprayable skin composition of wollastonite reinforcing fibers;
about 50% to about 80% by weight of said sprayable skin composition synthetic polyester resin wherein the synthetic polyester resin is orthophthalic polyester resins, isophthalic polyester resins, or mixtures thereof; and
about 5% to about 15% by weight of said sprayable skin composition of a styrene monomer;
wherein said sprayable skin composition gels in about 1 to about 3 minutes at ambient temperature after being sprayed onto a gel coated surface without the formation of air bubbles.
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Abstract
A sprayable skin composition and method of applying the skin composition is provided for use in reinforcing plastic products. The skin composition comprises a mixture of reinforcing wollastonite fibers and a synthetic resin, along with additional additives such as thixotropic agents, accelerators, stabilizers, and an air release agent. The composition is applied by spraying onto a gel coat in a mold and forms a gel within 1 to 3 minutes without the formation of air bubbles.
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Citations
20 Claims
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1. A sprayable skin composition for use in reinforcing plastic products comprising:
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about 15% to about 25% by weight of said sprayable skin composition of wollastonite reinforcing fibers; about 50% to about 80% by weight of said sprayable skin composition synthetic polyester resin wherein the synthetic polyester resin is orthophthalic polyester resins, isophthalic polyester resins, or mixtures thereof; and about 5% to about 15% by weight of said sprayable skin composition of a styrene monomer; wherein said sprayable skin composition gels in about 1 to about 3 minutes at ambient temperature after being sprayed onto a gel coated surface without the formation of air bubbles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A sprayable skin composition for reinforcing products comprising:
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from about 15 to about 25% by weight of said sprayable skin composition of wollastonite; from about 50% to about 80% by weight of said sprayable skin composition of a synthetic polyester resin wherein the synthetic polyester resin is orthophthalic polyester resins, isophthalic polyester resins, or mixtures thereof; from about 5 to about 15% by weight of said sprayable skin composition of a styrene monomer; from about 0 to about 5% by weight of said sprayable skin composition of a thixotropic agent; from about 0 to about 5% by weight of said sprayable skin composition of an accelerator; and from about 0 to about 5% by weight of said sprayable skin composition of an air release additive; wherein said sprayable skin composition gels in about 1 to about 3 minutes at ambient temperature after being sprayed onto a gel coated surface without the formation of air bubbles. - View Dependent Claims (11, 12, 13)
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14. A method of applying a sprayable skin composition comprising:
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providing a molding surface; applying a gel coat to said molding surface; providing a sprayable skin composition comprising about 15% to about 25% by weight of said sprayable skin composition wollastonite reinforcing fibers, about 50% to about 80% by weight of said sprayable skin composition synthetic polyester resin wherein the synthetic polyester resin is orthophthalic polyester resins, isophthalic polyester resins, or mixtures thereof, and about 5% to about 15% by weight of said sprayable skin composition of a styrene monomer; applying said sprayable skin composition to said gel coat by spraying, wherein said sprayable skin composition gels within about 1 to about 3 minutes at ambient temperature after application without the formation of air bubbles. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification