Title:
ACRYLIC RUBBER HAVING EXCELLENT INJECTION MOLDABILITY
Document Type and Number:
WIPO Patent Application WO/2021/261212
Kind Code:
A1
Abstract:
Provided is an acrylic rubber having excellent injection moldability. An acrylic rubber according to the present invention is composed of a binding unit derived from at least one sort of (meth)acrylic acid ester selected in the group consisting of (meth)acrylic acid alkyl esters and (meth)acrylic acid alkoxy alkyl ethers, a binding unit derived from a monomer containing a ion reactive group, and if necessary, a binding unit derived from another monomer. In said acrylic rubber, the weight average molecular weight (Mw) is 1,000,000 to 5,000,000, the ratio (Mw / Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) is in a range of 1.5 to 3, the ash content is 0.3 wt% or less, and the total content of sodium, sulfur, calcium, magnesium and phosphorus in the ash is 80 wt% or more.
Inventors:
MASUDA HIROFUMI (JP)
KAWANAKA TAKAFUMI (JP)
KAWANAKA TAKAFUMI (JP)
Application Number:
PCT/JP2021/021348
Publication Date:
December 30, 2021
Filing Date:
June 04, 2021
Export Citation:
Assignee:
ZEON CORP (JP)
International Classes:
C08F220/10; C08F2/22; C08F2/38; C08F6/14; C08F220/18; C08F220/28; C08K3/013; C08K5/00; C08L33/06; C08L33/08; C08L33/14
Domestic Patent References:
| WO2018139466A1 | 2018-08-02 | |||
| WO2019078167A1 | 2019-04-25 | |||
| WO2020250570A1 | 2020-12-17 |
Foreign References:
| JP2019031672A | 2019-02-28 | |||
| JP2020056013A | 2020-04-09 |
Attorney, Agent or Firm:
ARIGA, Eiichiro et al. (JP)
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