Title:
ACRYLIC RUBBER HAVING EXCELLENT ROLL PROCESSABILITY, STRENGTH PROPERTIES AND WATER RESISTANCE
Document Type and Number:
WIPO Patent Application WO/2021/246511
Kind Code:
A1
Abstract:
Provided is an acrylic rubber having excellent roll processability, strength properties and water resistance. An acrylic rubber according to the present invention contains a (meth)acrylic acid ester as a main component; the weight-average molecular weight (Mw) of the acrylic rubber, based on the absolute molecular weight and the absolute molecular weight distribution measured by the GPC-MALS method using a dimethylformamide solvent as a developing solvent, is 1,000,000 or more, and the ratio (Mw/Mn) of the weight-average molecular weight (Mw) to the number-average molecular weight (Mn) is 3.4 or more; and the acrylic rubber has an ash content of 0.4 weight% or less, and in addition, the total amount of sodium, magnesium, calcium, phosphorus and sulfur in the ash content is 80 weight% or more.
Inventors:
MASUDA HIROFUMI (JP)
KAWANAKA TAKAFUMI (JP)
KAWANAKA TAKAFUMI (JP)
Application Number:
PCT/JP2021/021343
Publication Date:
December 09, 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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