POLYMERIZATION INITIATOR, AND PROCESS FOR POLYMERIZATION OF (METH)ACRYLIC ACID DERIVATIVE

WIPO Patent Application WO/2007/142188

A1

[PROBLEMS] To provide a polymerization initiator which enables to polymerize a (meth)acrylic acid derivative under the conditions where a monomer and/or a solvent has an active proton. [MEANS FOR SOLVING PROBLEMS] Disclosed is a polymerization initiator comprising a zinc ate complex represented by the following general formula (1) or (2): t-BunR3-nZnM (1) t-BunR4-nZnMm (2) wherein n represents an integer ranging from 1 to 3; R's independently represent an alkyl, alkenyl, aryl or arylalkyl group having 1 to 12 carbon atoms; M represents lithium, magnesium or a magnesium halide represented by the formula: MgX [wherein X represents a chlorine, a bromine or an iodine]; and m represents 1 or 2. Also disclosed is a process for polymerization of a (meth)acrylic acid derivative using the polymerization initiator.

UCHIYAMA MASANOBU (JP)
KANEKO TOSHIYUKI (JP)

PCT/JP2007/061289

December 13, 2007

June 04, 2007

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UNIV TOKYO (JP)
TOSOH FINECHEM CORP (JP)
UCHIYAMA MASANOBU (JP)
KANEKO TOSHIYUKI (JP)

C08F4/50; C07F3/06; C08F20/00

JP2004292328A

2004-10-21

KOBAYASHI M. ET AL.: "A New Chemoselective Anionic Polymerization Method for Poly(N-isopropylacrylamide)(PNIPAm) in Aqueous Media: Design and Application of Bulky Zincate Possessing Little Basicity", MACROMOLECULES, vol. 37, no. 12, June 2004 (2004-06-01), pages 4339 - 4341, XP001196825
HSIEH H.L.: "Effects of Diethylzinc in Alkyllithium-Initiated Polymerizations", JOURNAL OF POLYMER SCIENCE: POLYMER CHEMISTRY EDITION, vol. 14, no. 2, February 1976 (1976-02-01), pages 379 - 386, XP003019759

MIZUNO, Katsufumi et al. (2-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 05, JP)

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