Thermosetting acrylic gel coat
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United States of America Patent
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Dec 10, 2002
Grant Date -
Dec 13, 2001
app pub date -
Nov 10, 1998
filing date -
Nov 1, 1996
priority date (Note) -
Expired
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Abstract
An invention is disclosed which pertains to components for gel coat compositions, a process for making such gel coat compositions, and a process for making gel coated articles. Low molecular weight unsaturated polymers which incorporate multiple pendent and/or terminal acrylic or methacrylic vinyl groups are made by the addition polymerization of acrylate/methacrylate monomers with epoxy acrylates such as glycidyl methacrylate, followed by ring opening of the oxirane via action of an (meth)acrylic acid in combination with a ring-opening catalyst to produce the final unsaturated polymer. Gel coat compositions containing such polymers possess improved rheological properties and may be used to create durable in-mold coatings for articles requiring good hydrolytic stability and UV resistance.
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