Hydrogenated block copolymer

Patent metadata

Field	Value
Publication number	US-10597481-B2
Application number	US-201615548640-A
Country	US
Kind code	B2
Filing date	Feb 5, 2016
Priority date	Feb 6, 2015
Publication date	Mar 24, 2020
Grant date	Mar 24, 2020

Abstract

A hydrogenated block copolymer prepared by hydrogenating a block copolymer that contains a polymer block (A) containing a structural unit derived from an aromatic vinyl compound, a polymer block (B) containing a structural unit derived from farnesene, and a polymer block (C) containing a structural unit derived from a conjugated diene except farnesene, wherein the block copolymer contains at least two above polymer blocks (A), at least one above polymer block (B) and at least one above polymer block (C), and wherein at least one above polymer block (B) is at the terminal, and the hydrogenation rate of the carbon-carbon double bond in the polymer block (B) and the polymer block (C) is 50 mol % or more.

First claim

The invention claimed is:

1. A hydrogenated block copolymer prepared by hydrogenating a block copolymer that comprises a polymer block (A) comprising a structural unit derived from an aromatic vinyl compound, a polymer block (B) comprising a structural unit derived from farnesene, and a polymer block (C) comprising a structural unit derived from a conjugated diene other than farnesene,
wherein:
the block copolymer comprises at least two of the polymer blocks (A), at least one of the polymer block (B) and at least one of the polymer block (C), and wherein at least one of the polymer block (B) is at a terminal,
50 mol % or more of a total of carbon-carbon double bonds in the at least one polymer block (B) and in the at least one polymer block (C) are hydrogenated,
the hydrogenated block copolymer comprises a structure that comprises the polymer block (B), the polymer block (A), and the polymer block (C), in that order, and
an order-disorder transition temperature (ODT) of the hydrogenated block copolymer, as measured by dynamic viscoelastometry, is 290° C. or lower.

2. The hydrogenated block copolymer according to claim 1 , wherein 70 mol % or more of the total of the carbon-carbon double bonds in the at least one polymer block (B) are hydrogenated.

3. The hydrogenated block copolymer according to claim 1 , wherein a ratio by mass of the at least two polymer blocks (A) to a total mass of the at least two polymer blocks (A), the at least one polymer block (B) and the at least one polymer block (C) is from 5/100 to 80/100.

4. The hydrogenated block copolymer according to claim 1 , wherein the aromatic vinyl compound is at least one selected from the group consisting of styrene, a-methylstyrene and 4-methylstyrene.

5. The hydrogenated block copolymer according to claim 1 , wherein the conjugated diene other than farnesene is at least one selected from the group consisting of butadiene, isoprene and myrcene.

6. The hydrogenated block copolymer according to claim 1 , wherein a ratio by mass of the at least one polymer block (C) to the at least one polymer block (B) is from 5/95 to 95/5.

7. The hydrogenated block copolymer according to claim 1 , wherein a peak top molecular weight of the at least two polymer blocks (A) is from 2,000 to 100,000, a peak top molecular weight of the at least one polymer block (B) is from 2,000 to 200,000, and a peak top molecular weight of the at least one polymer block (C) is from 4,000 to 200,000.

8. The hydrogenated block copolymer according to claim 1 , wherein the ODT of the hydrogenated block copolymer, as measured by dynamic viscoelastometry, is 260° C. or lower.

9. A method for producing the hydrogenated block copolymer of claim 1 , comprising:
producing the at least one polymer block (B), the at least two polymer blocks (A) and the at least one polymer block (C) in that order to give a resultant block copolymer, and
hydrogenating the resultant block copolymer.

10. A hydrogenated block copolymer composition comprising the hydrogenated block copolymer of claim 1 , and at least one selected from the group consisting of a polyolefin resin, a tackifier resin and a softening agent.

11. A molded article comprising the hydrogenated block copolymer of claim 1 .

12. A laminate comprising a layer comprising the hydrogenated block copolymer of claim 1 .

13. A film comprising the hydrogenated block copolymer of claim 1 .

14. A protective film comprising the laminate of claim 12 .

15. A fiber comprising the hydrogenated block copolymer of claim 1 .

16. A nonwoven fabric comprising the hydrogenated block copolymer of claim 1 .

17. A decorative molding material comprising the laminate of claim 12 .

18. An adhesive comprising the hydrogenated block copolymer of claim 1 .

19. A hydrogenated block copolymer prepared by hydrogenating a block copolymer that comprises a polymer block (A) comprising a structural unit derived from an aromatic vinyl compound, a polymer block (B) comprising a structural unit derived from farnesene, and a polymer block (C) comprising a structural unit derived from a conjugated diene other than farnesene,
wherein:
the block copolymer comprises at least two of the polymer blocks (A), at least one of the polymer block (B) and at least one of the polymer block (C), and wherein at least one of the polymer block (B) is at a terminal,
50 mol % or more of a total of carbon-carbon double bonds in the at least one polymer block (B) and in the at least one polymer block (C) are hydrogenated,
the hydrogenated block copolymer comprises a structure that comprises the polymer block (B), the polymer block (A), and the polymer block (C), in that order, and
a peak top molecular weight of the at least two polymer block blocks (A) is from 2,000 to 100,000, a peak top molecular weight of the at least one polymer block (B) is from 2,000 to 200,000, and a peak top molecular weight of the at least one polymer block (C) is from 4,000 to 200,000.

Assignees

• Kuraray Co
• Amyris Inc

Inventors

• Uehara Yosuke
• Sasaki Hiromitsu
• Konishi Daisuke
• Kato Masahiro

Classifications

• D04H3/007

  Addition polymers · CPC title

• C09J153/025

  modified · CPC title

• D01F6/28

  from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• C08L23/00

  Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers · CPC title

• D04H1/4282

  Addition polymers · CPC title