Polymer blends
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United States of America Patent
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Feb 23, 1993
Grant Date -
N/A
app pub date -
Apr 30, 1991
filing date -
May 18, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Polymer blends comprising: (A) 99.5-0.5 wt. % of a copolymer comprising: a1) 50-99 wt. % of C.sub.1 -C.sub.10 -alkyl- or C.sub.5 -C.sub.8 -cycloalkylmethacrylates or mixtures thereof, a2) 0.5-20 wt. % of maleic acid anhydride or fumaric acid anhydride or maleimide, and a3) 0.5-40 wt. % of vinyl aromatics which may be unsubstituted or substituted on the aromatic ring with 1 or 2 alkyl groups of 1 to 4 carbon atoms; and (B) 0.5-99.5 wt. % of a copolymer comprising: b1) 99.5-50 wt. % of styrene and/or .alpha.-methyl styrene b2) 0.5-50 wt. % of acrylonitrile and/or methacrylonitrile; provide thermoplastic transparent molding compositions.
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