Process for preparation of antistatic agent and methacrylic...

C - Chemistry – Metallurgy – 08 – F

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400/2050, 400/30

C08F 297/02 (2006.01) C08F 287/00 (2006.01) C08L 53/00 (2006.01)

Patent

CA 1333642

An antistatic agent capable of imparting a perma- nent 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 presence of at least one compound acting as a source for supplying an anion selected from HF2-, (CH3)3SiF2- and F- by using as an initiator a compound represented by the formula (I) or (II): Image (I) or Image (II) wherein R is H or CH3 and R1 is H or alkyl; second, a methacrylic acid ester comprising at least 80 mole% of a methacrylic acid ester represented by the formula (III): Image (III) wherein R2 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.

600975

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