Process for the preparation of a methacrylic resin cast plate ha

Details Process for the preparation of a methacrylic resin cast plate ha Process for the preparation of a methacrylic resin cast plate ha

1990-03-26

1992-06-02

Henderson, Christopher

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

26433118, 524322, 524377, 524521, 525 77, 525217, C08K 509, C08K 506

Patent

active

051187442

ABSTRACT:
A methacrylic resin cast plate having an excellent antistatic property comprises (A) 100 weight parts of a polymer comprising 50 to 100 weight % of methyl methacrylate units and 0 to 50 weight % of copolymerizable monomer units and (B) 0.1 to 20 weight parts of a polymer comprising 20 to 100 weight & of units derived from a monomer having a quaternary ammonium base, which is represented by the formula (I): ##STR1## wherein R.sub.1 is H or CH.sub.3, R.sub.2 through R.sub.4 are H or (C1-9) alkyl which may have a substituent, m is from 1 to 10 and X.sup.- is an anion of a quaternizing agent, and 0 to 80 weight % of copolymerizable monomer units. The cast plate is obtained by polymerizing methyl methacrylate, a monomer mixture comprising at least 50 weight & of methyl methacrylate and up to 50 weight % of a copolymerizable monomer or a partial polymerization product thereof in the presence of the polymer (B).

REFERENCES:
patent: 4859727 (1989-08-01), Sasaki
WPI, File Supplier, No. AN-74-74916v, Derwent Publications Ltd., London, GB; & JP-A-79 023 395 (Mitsubishi Rayon Co., Ltd.) Aug. 13, 1979.
Chemical Abstracts, vol. 82, 1975, p. 66, No. 9924h, Columbus, Ohio, US; & JP-A-74 22 952 (Mitsubishi Rayon Co., Ltd.) Jun. 12, 1974.
Chemical Abstracts, vol. 81, 1974, p. 66, No. 121923j, Columbus, Ohio, US; & JP-A-74 51 371 (Mitsubishi Rayon Co., Ltd.) May 18, 1974.
Chemical Abstracts, vol. 80, 1974, p. 34, No. 48866r, Columbus, Ohio, US; & JP-A-73 15 471 (Mitsubishi Raryon Co., Ltd.) May 15, 1973.

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