Title:
SOLUBLE POLYFUNCTIONAL VINYLAROMATIC POLYMER AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2005/073258
Kind Code:
A1
Abstract:
A soluble polyfunctional vinylaromatic copolymer improved in heat resistance, resistance to thermal decomposition, solvent solubility, and processability. The soluble polyfunctional vinylaromatic polymer is obtained by cationically polymerizing, at a temperature of 20 to 120°C, one or more monomer ingredients comprising 20 to 100 mol% divinylaromatic compound (a) in the presence of a donor ingredient, e.g., a quaternary ammonium salt, with the aid of a Lewis acid catalyst and an initiator represented by the following general formula (1) wherein R1 represents hydrogen or a monovalent C1-6 hydrocarbon group; R2 represents an aromatic or aliphatic hydrocarbon group having a valence of p; Z represents halogeno or C1-6 alkoxy or acyloxy; and p is an integer of 1 to 6; provided that when two or more R1's and Z's are present per molecule, they each may be the same or different.
Inventors:
KAWABE MASANAO (JP)
Application Number:
PCT/JP2005/001000
Publication Date:
August 11, 2005
Filing Date:
January 26, 2005
Export Citation:
Assignee:
NIPPON STEEL CHEMICAL CO (JP)
KAWABE MASANAO (JP)
KAWABE MASANAO (JP)
International Classes:
C08F4/06; C08F12/34; C08F4/58; C08F212/36; C08K5/19; (IPC1-7): C08F4/06; C08F212/36
Foreign References:
| JP2003055420A | 2003-02-26 | |||
| JP2003292504A | 2003-10-15 | |||
| JPH06157627A | 1994-06-07 | |||
| JPS59145207A | 1984-08-20 | |||
| JPS5876411A | 1983-05-09 | |||
| JPS5662808A | 1981-05-29 |
Attorney, Agent or Firm:
Naruse, Katsuo (TKK Nishishinbashi Bldg. 11-5, Nishi-shinbashi
2-chome, Minato-k, Tokyo 03, JP)
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