Title:
HYDROGENATED PRODUCT OF BLOCK COPOLYMER, RESIN COMPOSITION, GEL COMPOSITION, CABLE FILLER, CABLE, COSMETIC, LUBRICATING OIL, GREASE, AND METHOD FOR PRODUCING HYDROGENATED PRODUCT OF BLOCK COPOLYMER
Document Type and Number:
WIPO Patent Application WO/2023/249095
Kind Code:
A1
Abstract:
The present invention provides: a hydrogenated product of a block copolymer which has a low glass transition temperature and exhibits suitable flexibility, rubber elasticity, and elongation properties even in a low temperature range; a resin composition; and a method for producing the hydrogenated product of a block copolymer. The hydrogenated product of a block copolymer contains a polymer block (A) including a structural unit derived from an aromatic vinyl compound and a polymer block (B) including a structural unit derived from a conjugated diene compound. The hydrogenated product of a block copolymer satisfies conditions (1) to (3) indicated below. (1) The structural unit derived from a conjugated diene compound in the polymer block (B) has a structural unit derived from butadiene and a structural unit derived from isoprene, and does not have any structural units derived from farnesene. (2) The glass transition temperature of the hydrogenated product of a block copolymer is -50ºC or less. (3) When the weight average molecular weight of the hydrogenated product of a block copolymer is denoted by x and the crystallization temperature is denoted by y (ºC), the hydrogenated product of a block copolymer satisfies 5.8x/100,000 - y > 17.
Inventors:
SENDA YASUSHI (JP)
TAKAHASHI NAOTO (JP)
MASUDA MIKIO (JP)
SATANI RYO (JP)
AKAMA RYU (JP)
TAKAHASHI NAOTO (JP)
MASUDA MIKIO (JP)
SATANI RYO (JP)
AKAMA RYU (JP)
Application Number:
PCT/JP2023/023208
Publication Date:
December 28, 2023
Filing Date:
June 22, 2023
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
C08F297/04; C08F8/04; C08L53/02
Domestic Patent References:
| WO2021235457A1 | 2021-11-25 | |||
| WO2012111644A1 | 2012-08-23 | |||
| WO2019103048A1 | 2019-05-31 |
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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