Title:
HYDROGENATED BLOCK COPOLYMER, METHOD FOR PRODUCING SAME, CRUMB OF SAME, AND GEL COMPOSITION CONTAINING HYDROGENATED BLOCK COPOLYMER
Document Type and Number:
WIPO Patent Application WO/2022/181657
Kind Code:
A1
Abstract:
The present invention pertains to: a hydrogenated block copolymer that is a hydrogenated product of a block copolymer comprising a polymeric block (A) containing, with respect to the total mass of the polymeric block (A), 90 mass% or more of a structural unit derived from an aromatic vinyl compound, and a polymeric block (B) containing, with respect to the total mass of the polymeric block (B), 90 mass% or more of a structural unit derived from a conjugated diene compound, and that satisfies all conditions of (1)-(3); a method for producing said hydrogenated block copolymer and a crumb of the hydrogenated block copolymer; and a gel composition. (1) The peak-top molecular weight of the block copolymer is 50,000-300,000. (2) The contained amount of the polymeric block (A) in the hydrogenated block copolymer is 20.0-50.0 mass%. (3) The gel composition contains paraffin oil as a base oil and the hydrogenated block copolymer at a proportion of 9:1, and satisfies a specific condition.
Inventors:
NISHIKAWA TAKAAKI (JP)
AKAHORI YOSUKE (JP)
TANAKA YUSUKE (JP)
AKAHORI YOSUKE (JP)
TANAKA YUSUKE (JP)
Application Number:
PCT/JP2022/007471
Publication Date:
September 01, 2022
Filing Date:
February 24, 2022
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
C08F297/04; C08L53/02; C08L91/00; G02B6/44; H01B3/44; H01B9/00
Domestic Patent References:
| WO2010024382A1 | 2010-03-04 |
Foreign References:
| JPH10139963A | 1998-05-26 | |||
| JPH03167207A | 1991-07-19 |
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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