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Title:
MANUFACTURING METHOD OF (METH)ACRYLIC COPOLYMER, AND (METH)ACRYLIC COPOLYMER
Document Type and Number:
Japanese Patent JP2011256263
Kind Code:
A
Abstract:

To provide a method for manufacturing a (meth)acrylic copolymer in high efficiency by tracing down inconvenient causes since in a (meth)acrylic copolymer solution obtained by a conventional method, after solution polymerization, staining adheres in a vent box or piping in a case a solvent is deaerated, and disadvantage that pressure rise of a filter happens in a filter purification process in a polymer filter at the time of melt extrusion arises.

The method for manufacturing a (meth)acrylic copolymer comprises polymerizing a monomer component including a vinyl monomer which has a ring structure and a (meth)acrylic monomer by radical solution polymerization, wherein in the vinyl monomer which has the ring structure, a part thereof or all is fed in a polymerization vessel before polymerization initiation, in the (meth)acrylic monomer, at most 70 mass% is fed in the polymerization vessel before polymerization initiation in 100 mass% of the (meth)acrylic monomer, and the remainder is added gradually.


Inventors:
Shioya, Yoshiyuki
Maeda, Yorihiro
Miyai, Takashi
Application Number:
JP2010000131530
Publication Date:
December 22, 2011
Filing Date:
June 08, 2010
Export Citation:
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Assignee:
NIPPON SHOKUBAI CO LTD
International Classes:
C08F220/26; C08F2/04; C08F226/06
Domestic Patent References:
2006-09-21
2011-01-27
1985-08-23
Attorney, Agent or Firm:
Hiroaki Ito
Yukari Shibata
Hisakazu Ueki
Hisahiko Ueki
Tadashi Sugawa