1): reacting a halomethyl group-containing carboxyl acid halide with an azo-based polymerization initiator having OH groups at both the terminals or by (A2): reacting a halomethyl group-containing alcohol with an azo-based polymerization initiator having carboxylic acid halides at both the terminals. (B) (B1): An azo group-containing macromolecular polymerization initiator obtained by reacting a reducing agent on A and carrying out redox radical polymerization of an ethylenic unsaturated monomer. (B2): A halomethyl group-containing macromolecular polymerization initiator obtained by thermal radical polymerization of A with an ethylenic monomer. (C) A block polymer obtained by polymerizing an ethylenic monomer in the presence of A or B.;COPYRIGHT: (C)1993,JPO&Japio"/>
HALOMETHYL GROUP-CONTAINING AZO-BASED POLYMERIZATION INITIATOR, MACROMOLECULAR POLYMERIZATION INITIATOR SYNTHESIZED FROM THE SAME INITIATOR AND PRODUCTION OF BLOCK POLYMER USING THE SAME INITIATOR
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HALOMETHYL GROUP-CONTAINING AZO-BASED POLYMERIZATION INITIATOR, MACROMOLECULAR POLYMERIZATION INITIATOR SYNTHESIZED FROM THE SAME INITIATOR AND PRODUCTION OF BLOCK POLYMER USING THE SAME INITIATOR
HALOMETHYL GROUP-CONTAINING AZO-BASED POLYMERIZATION INITIATOR, MACROMOLECULAR POLYMERIZATION INITIATOR SYNTHESIZED FROM THE SAME INITIATOR AND PRODUCTION OF BLOCK POLYMER USING THE SAME INITIATOR
PURPOSE: To provide the subject halomethyl group-containing azo-based polymerization initiator capable of readily synthesizing a macromolecular polymerization initiator having one or the other of the initiating groups by using an ethylenic unsaturated monomer and of reaidily synthesizing a block copolymer. ;CONSTITUTION: (A) A halomethyl group-containing azo-based polymerization initiator of formula I [R1 is formulae II to IV (n and m are natural number of 1 to 10); R" is a 1 to 5C alkyl; Y is a halomethyl group having one or more halogens] obtained by (A1): reacting a halomethyl group-containing carboxyl acid halide with an azo-based polymerization initiator having OH groups at both the terminals or by (A2): reacting a halomethyl group-containing alcohol with an azo-based polymerization initiator having carboxylic acid halides at both the terminals. (B) (B1): An azo group-containing macromolecular polymerization initiator obtained by reacting a reducing agent on A and carrying out redox radical polymerization of an ethylenic unsaturated monomer. (B2): A halomethyl group-containing macromolecular polymerization initiator obtained by thermal radical polymerization of A with an ethylenic monomer. (C) A block polymer obtained by polymerizing an ethylenic monomer in the presence of A or B.;COPYRIGHT: (C)1993,JPO&Japio
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