Title:
ANIONIC POLYMERIZATION METHOD AND MANUFACTURING METHOD OF POLYMER
Document Type and Number:
Japanese Patent JP2018178134
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an anionic polymerization method of high ribbing (meth)acrylic acid ester more surely without deteriorating properties originally obtained by a (meth)acrylic polymer such as transparency, and a method for manufacturing a (meth)acrylic acid ester block polymer high in uniformity of molecular weight more surely.SOLUTION: There is provided an anionic polymerization method of (meth)acrylic acid ester in which a tertiary organic aluminum compound (A), an organic lithium compound (B), and at least one kind of Lewis base (C) are existed in a polymerization system, the tertiary organic aluminum compound (A) contains tertiary organic aluminum compound having a chemical structure in which 2 or more bonds of 3 obtained by an aluminum atom bind to an aromatic ring via an oxygen atom (A1) and a molar ratio of a tertiary organic aluminum compound having a chemical structure in which 1 or less bond of 3 obtained by the aluminum atom in the tertiary organic aluminum compound (A) binds to the aromatic ring via the oxygen atom (A2) and the tertiary organic aluminum compound (A1), (A2)/(A1) is in a range of 0 to 0.8%.SELECTED DRAWING: None
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Inventors:
KAWAHARA MOE
ONO TOMOHIRO
ONO TOMOHIRO
Application Number:
JP2018158446A
Publication Date:
November 15, 2018
Filing Date:
August 27, 2018
Export Citation:
Assignee:
KURARAY CO
International Classes:
C08F20/10; C08F2/06; C08F4/12; C08F4/48; C08F4/54; C08F297/02
Attorney, Agent or Firm:
Patent corporation ssinpat