Block copolymer or hydrogenated product of same

Patent metadata

Field	Value
Publication number	US-11655362-B2
Application number	US-201816763845-A
Country	US
Kind code	B2
Filing date	Nov 21, 2018
Priority date	Nov 22, 2017
Publication date	May 23, 2023
Grant date	May 23, 2023

Abstract

A block copolymer or a hydrogenate thereof, containing a polymer block (A) and a polymer block (B), in which the polymer block (B) has a structural unit derived from a conjugated diene compound, the structural unit including one or more kinds of alicyclic skeletons (X) represented by a formula (X) in the main chain.

First claim

The invention claimed is:

1. A block copolymer or a hydrogenate thereof, comptising a polymer block (A) and a polymer block (B), wherein the polymer block (B) has a structural unit derived from a conjugated diene compound, the structural unit including one or more kinds of alicyclic skeletons (X) represented by the following formula (X) in the main chain:

wherein R 1 to R 3 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 11 carbon atoms, and a plurality of each of R 1 to R 3 may be the same as or different from each other,
wherein the polymer block (A) contains a structural unit derived from an aromatic vinyl compound in the amount of more than 70% b mole.

2. The block copolymer or the hydrogenate thereof according to claim 1 , wherein an alicyclic skeleton (X′) in which at least one of R 1 to R 3 is a hydrocarbon group having 1 to 11 carbon atoms is included as the alicyclic skeleton (X).

3. The block copolymer or the hydrogenate thereof according to claim 2 , wherein the hydrocarbon group in the alicyclic skeleton (X′) is a methyl group.

4. The block copolymer or the hydrogenate thereof according to claim 1 , wherein R 1 to R 3 are simultaneously hydrogen atoms.

5. The block copolymer or the hydrogenate thereof according to claim 1 , wherein the polymer block (B) contains the alicyclic skeleton (X) in the amount of 1% by mole or more.

6. The block copolymer or the hydrogenate thereof according to claim 2 , wherein the polymer block (B) contains the alicyclic skeleton (X′) in the amount of 1% by mole or more.

7. The block copolymer or the hydrogenate thereof according to claim 1 , wherein a hydrogenation rate of the polymer block (B) is 0% by mole or more and less than 50% by mole.

8. The hydrogenate according to claim 1 , wherein the hydrogenation rate of the polymer block (B) is 50 to 99% by mole.

9. The block copolymer or the hydrogenate thereof according to claim 1 , wherein a vinyl bond amount in the polymer block (B) is 55 to 95% by mole.

10. The block copolymer or the hydrogenate thereof according to claim 1 , wherein a series of temperature regions in which tanδ, as measured under the conditions of a strain of 0.1%, a frequency of 1 Hz, a measurement temperature of −70 to 100° C., and a temperature elevating rate of 3° C/min in accordance with JIS K7244-10 (2005), is 1.0 or more is present, and the maximum width of the temperature region is 13° C. or more.

11. The block copolymer or the hydrogenate thereof according to claim 1 , wherein a content of the polymer block (A) in the block copolymer is 50% by mass or less.

12. The block copolymer or the hydrogenate thereof according to claim 11 , wherein the content of the polymer block (A) in the block copolymer is 16% by mass or less.

13. A resin composition comprising the block copolymer or the hydrogenate thereof according to claim 1 .

14. A resin composition comprising a component (I) which is the block copolymer or the hydrogenate thereof according to claim 1 and a component (II) which is at least one selected from an olefin-based resin, a styrene-based resin, a polyphenylene ether-based resin, a polycarbonate-based resin, a polyamide-based resin, an isobutylene-isoprene copolymer rubber, and a polyurethane-based thermoplastic elastomer, in which a content ratio [(I)(II)] of the component (I) to the component (II) is 1/99 to 99/1 in terms of a mass ratio.

15. A film or sheet formed by molding the block copolymer or the hydrogenate thereof according to claim 1 .

16. A vibration damping material comprising the block copolymer or the hydrogenate thereof according to claim 1 .

17. A bonding adhesive or a pressure-sensitive adhesive, comprising the block copolymer or the hydrogenate thereof according to claim 1 .

18. A laminate comprising an X layer containing the block copolymer or the hydrogenate thereof according to claim 1 , and a Y layer laminated on at least one surface of the X layer.

Assignees

• Kuraray Co

Inventors

• Senda Yasushi
• Kato Masahiro

Classifications

• F16F15/02

  Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems ({F16F15/005 takes precedence } ; layered products B32B; suppression of vibration in ships B63; {relieving load on bearings, using magnetic means F16C39/06}) · CPC title

• F16F2224/025

  Elastomers · CPC title

• C08F136/06

  Butadiene · CPC title

• B32B27/302

  comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers · CPC title

• C08F8/04

  Reduction, e.g. hydrogenation · CPC title