Carboxyl modified olefinic copolymer compositions
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United States of America Patent
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Dec 19, 1989
Issued Date -
N/A
app pub date -
May 19, 1988
filing date -
Jan 5, 1987
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Expired
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Abstract
The invention relates to a novel low profile additive (LPA) for uncured polyester resins and the resultant molding compositions. The low profile additive is the reaction product of an ethylene/alphaolefin copolymer with a carboxylic acid or anhydride, to thereby form a non-thermoplastic carboxyl modified polyolefin. The novel LPA is a remarkably effective dimensional stabilizer and has displayed the ability to achieve net expansion in a cured polyester resin molding composition.
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