Acrylic/carbonate resin compositions
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United States of America Patent
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Sep 7, 1993
Grant Date -
N/A
app pub date -
Jun 25, 1992
filing date -
Jun 25, 1992
priority date (Note) -
Expired
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Abstract
Acrylic/carbonate resins are provided which have excellent weatherability, outstanding transparency and improved heat and solvent resistance, as well as improved impact strength. The acrylic/carbonate resins comprise an intimate blend of a polymerization syrup and a catalytic amount of a polymerization catalyst capable of effecting polymerization of the syrup. The polymerization syrup, which has an improved shelf life and can be stored at ambient temperature and atmospheric pressure, consists essentially of: (a) from about 10 to about 990 parts per volume of an acrylic monomer represented by the formula ##STR1## wherein R is an alkyl moiety containing 1 to about 10 carbon atoms; (b) from about 990 to about 10 parts by volume diallyl diglycol carbonate monomer; (c) from about 0.1 to about 20 parts by volume of a mercaptan; and (d) from about 0.3 to about 300 parts by volume of a crosslinking agent compatible with the acrylic monomer. The polymerization syrup can further contain from about 0.1 to 20 parts by volume tetrahydrofuran and from about 30 to about 100 parts by volume of a urethane monomer.
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