Title:
ACRYLIC RUBBER EXCELLENT IN TERMS OF ROLL PROCESSABILITY, BANBURY PROCESSABILITY, WATER RESISTANCE, STRENGTH CHARACTERISTICS, AND COMPRESSION SET CHARACTERISTICS
Document Type and Number:
WIPO Patent Application WO/2021/246510
Kind Code:
A1
Abstract:
Provided is an acrylic rubber excellent in terms of roll processability, Banbury processability, water resistance, strength characteristics, and compression set characteristics. This acrylic rubber has at least one kind of reactive groups or atoms selected from the group consisting of a carboxyl group, an epoxy group, and a chlorine atom, has a number-average molecular weight (Mn), which is determined from an absolute molecular weight and an absolute-molecular-weight distribution both determined by GPC-MALS method, in the range of 100,000-500,000, has a ratio of the weight-average molecular weight (Mw) to the number-average molecular weight (Mn), Mw/Mn, in the range of 3.7-6.5, and has a content of methyl-ethyl-ketone insolubles of 50 wt% or less and an ash content of 0.5 wt% or less, the ash having a total content of magnesium and phosphorus of 50 wt% or higher.
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Inventors:
MASUDA HIROFUMI (JP)
KAWANAKA TAKAFUMI (JP)
KAWANAKA TAKAFUMI (JP)
Application Number:
PCT/JP2021/021342
Publication Date:
December 09, 2021
Filing Date:
June 04, 2021
Export Citation:
Assignee:
ZEON CORP (JP)
International Classes:
C08F6/14; C08F2/22; C08F2/38; C08F220/10; C08F222/02; C08K3/013; C08L33/04; C08L33/14
Domestic Patent References:
| WO2018139466A1 | 2018-08-02 | |||
| WO2015147052A1 | 2015-10-01 | |||
| WO2021014792A1 | 2021-01-28 | |||
| WO2021014797A1 | 2021-01-28 |
Foreign References:
| JPS5468890A | 1979-06-02 | |||
| JP2021017556A | 2021-02-15 | |||
| JP2021017598A | 2021-02-15 | |||
| JP2021105126A | 2021-07-26 |
Attorney, Agent or Firm:
ARIGA, Eiichiro et al. (JP)
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