Process for preparation of antistatic agent and methacrylic resi

Details Process for preparation of antistatic agent and methacrylic resi Process for preparation of antistatic agent and methacrylic resi

1989-05-31

1992-11-17

Seidleck, James J.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525293, 525 88, 525 93, C08L 3310, C08L 3312, C08L 3314

Patent

active

051644525

ABSTRACT:
An antistatic agent capable of imparting a permanent antistatic property to a methacrylic resin is prepared as follows. First, an alkyl methacrylate is subjected to living polymerization in an atmosphere substantially free of water in the pressure of at least one compound acting as a source for supplying an anion selected from HF.sub.2.sup.-, (CH.sub.3).sub.3 SiF.sub.2.sup.- and F.sup.- by using as an initiator a compound represented by the formula (I) or (II): ##STR1## wherein R is H or CH.sub.3 and R.sup.1 is H or alkyl; second, a methacrylic acid ester comprising at least 80 mole % of a methacrylic acid ester represented by the formula (III): ##STR2## wherein R.sup.2 is alkyl and m is from 1 to 6, is subjected to living polymerization in the presence of the polymer obtained in the first step, to prepare a di-block or tri-block copolymer; and then, amino groups of segments derived from the methacrylic acid ester of the formula (III) in the block copolymer are quaternized.

REFERENCES:
patent: 4357435 (1982-11-01), Lewis et al.
patent: 4508880 (1985-04-01), Webster
patent: 4755563 (1988-07-01), West
patent: 4859727 (1989-08-01), Sasaki et al.
patent: 4877687 (1989-10-01), Azegami et al.
Database Chemical Abstracts, (Host: STN), 1973, No. 80(10):48866R, Columbus, Ohio, U.S.; Abstract.

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