Title:
CHLOROPRENE BLOCK COPOLYMER, LATEX, LATEX COMPOSITION, AND RUBBER COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2021/193560
Kind Code:
A1
Abstract:
Provided are a chloroprene block copolymer, latex, latex composition, and rubber composition from which are obtained products having excellent flexibility and tensile properties even without using a vulcanizing agent or vulcanization accelerator. A chloroprene block copolymer containing 5-30 mass% of a polymer block (A) derived from a monomer from which is obtained a polymer having a glass transition temperature of 80°C or higher during homopolymerization and 70-95 mass% of a chloroprene polymer block (B) containing a chloroprene monomer. The toluene-insoluble content is 20-100 mass% relative to 100 mass% of the chloroprene block copolymer.
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Inventors:
KUMAGAI YUSHI (JP)
NISHINO WATARU (JP)
SAITO YUTAKA (JP)
KOBAYASHI NAOKI (JP)
NISHINO WATARU (JP)
SAITO YUTAKA (JP)
KOBAYASHI NAOKI (JP)
Application Number:
PCT/JP2021/011776
Publication Date:
September 30, 2021
Filing Date:
March 22, 2021
Export Citation:
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
C08F293/00; C08L53/02
Domestic Patent References:
| WO2016133192A1 | 2016-08-25 | |||
| WO2018181801A1 | 2018-10-04 | |||
| WO2019026914A1 | 2019-02-07 | |||
| WO2018181801A1 | 2018-10-04 | |||
| WO2019026914A1 | 2019-02-07 |
Foreign References:
| JP2010001458A | 2010-01-07 | |||
| JP2011012196A | 2011-01-20 | |||
| JP2007297502A | 2007-11-15 | |||
| JPH03207710A | 1991-09-11 | |||
| JPH03212414A | 1991-09-18 | |||
| JP2007297502A | 2007-11-15 |
Attorney, Agent or Firm:
SK INTELLECTUAL PROPERTY LAW FIRM et al. (JP)
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