Title:
HYDROGENATED BLOCK COPOLYMER CRUMB AND PROCESS FOR PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO/2012/056939
Kind Code:
A1
Abstract:
(Problem) To produce a hydrogenated block copolymer crumb which can exhibit excellent compounding properties including homogeneous dispersion of an oil throughout the crumb upon the compounding with the oil, the decrease of unmolten crumbs and the like.
(Solution) A hydrogenated block copolymer crumb which comprises a hydrogenated product of a block copolymer of an aromatic vinyl hydrocarbon and a conjugated diene, and which fulfils the following requirements (1) to (4): (1) the main peak molecular weight is 200,000 to 600,000; (2) the water content is 1 mass% or less; (3) the specific surface area is 0.3-1.0 m2/g; and (4) a component that passes through a sieve having a mesh size of 3.35 mm but does not pass through a sieve having a mesh size of 0.425 mm is contained in an amount of 80 mass% or more relative to the total amount of all of the crumbs.
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Inventors:
KUBO NOBUAKI (JP)
YAMAGUCHI TAKAO (JP)
YAMAGUCHI TAKAO (JP)
Application Number:
PCT/JP2011/073909
Publication Date:
May 03, 2012
Filing Date:
October 18, 2011
Export Citation:
Assignee:
JAPAN ELASTOMER CO LTD (JP)
KUBO NOBUAKI (JP)
YAMAGUCHI TAKAO (JP)
KUBO NOBUAKI (JP)
YAMAGUCHI TAKAO (JP)
International Classes:
C08F297/04; C08F6/12; C08F8/04; C08J3/16
Domestic Patent References:
| WO2001030859A1 | 2001-05-03 | |||
| WO1999055752A1 | 1999-11-04 |
Foreign References:
| JPH1017611A | 1998-01-20 | |||
| JPH08301929A | 1996-11-19 | |||
| JPH02189304A | 1990-07-25 |
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
Yoshiyuki Inaba (JP)
Yoshiyuki Inaba (JP)
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Claims: