Cross-linkable polyester/isocyanate compositions suited for the preparation of composite materials
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United States of America Patent
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Jan 17, 1995
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N/A
app pub date -
Mar 8, 1991
filing date -
Mar 9, 1990
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Expired
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Abstract
This invention relates to crosslinkable polymeric compositions and a process for preparing them which show a low content of vinyl monomers, are suitable for the fabrication of composite materials, have good mechanical properties, and comprise: a liquid polyisocyanate; a polyol having a maximum functionality of 7 and an average molecular weight of from about 200 to about 10,000; an unsaturated polyester or a vinylester resin; a radical polymerization initiator stable at temperatures below 70.degree. C.; a decomposition promoter for the initiator; a trimerization catalyst for the isocyanate; and optionally, a mineral filler having dehydrating properties.
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