Compound, modified polymer, rubber composition, tire, and conveyor belt

Patent metadata

Field	Value
Publication number	US-9932417-B1
Application number	US-201615554930-A
Country	US
Kind code	B1
Filing date	Mar 16, 2016
Priority date	Mar 17, 2015
Publication date	Apr 3, 2018
Grant date	Apr 3, 2018

Abstract

The present invention is to provide a compound that can provide a modified polymer exhibiting excellent rigidity, wear resistance, and low heat build-up when used in a rubber composition; a modified polymer obtained by subjecting a polymer to modification with the compound; a rubber composition including the modified polymer; and a tire and a conveyor belt that are produced by using the rubber composition. The compound of the present invention is represented by Formula (M) below.

First claim

The invention claimed is:

1. A compound represented by Formula (M) below:

wherein, R 1 and R 2 each independently represent a substituent; R 3 and R 4 represent a hydrogen atom or a methyl group; however, if R 3 is a methyl group, R 4 represents a hydrogen atom, and if R 4 is a methyl group, R 3 represents a hydrogen atom; R 5 represents a hydrogen atom or a hydrocarbon group; a represents an integer of 0 or 1 to 5; b represents an integer of 0 or 1 to 4; and n represents a number of 2 or greater.

2. The compound according to claim 1 , wherein the compound is obtained by reacting a nitrone compound with at least one type of polyether selected from the group consisting of polyethylene glycol and polypropylene glycol, and a molecular weight of the polyether is from 150 to 2000.

3. A modified polymer obtained by subjecting a polymer to modification with the compound described in claim 1 .

4. The modified polymer according to claim 3 , wherein the polymer is at least one type of conjugated diene polymer selected from the group consisting of SBR, BR, IR, NR, and NBR.

5. A rubber composition comprising the modified polymer described in claim 3 .

6. The rubber composition according to claim 5 , wherein
the rubber composition comprises a diene rubber and a carbon black;
the diene rubber comprises the modified polymer; and
a content of the modified polymer in the diene rubber is from 15 to 70 mass %.

7. A tire produced by using the rubber composition described in claim 5 .

8. A conveyor belt produced by using the rubber composition described in claim 5 .

9. A modified polymer obtained by subjecting a polymer to modification with the compound described in claim 2 .

10. The modified polymer according to claim 9 , wherein the polymer is at least one type of conjugated diene polymer selected from the group consisting of SBR, BR, IR, NR, and NBR.

11. A rubber composition comprising the modified polymer described in claim 4 .

12. A rubber composition comprising the modified polymer described in claim 9 .

13. A rubber composition comprising the modified polymer described in claim 10 .

14. The rubber composition according to claim 11 , wherein
the rubber composition comprises a diene rubber and a carbon black;
the diene rubber comprises the modified polymer; and
a content of the modified polymer in the diene rubber is from 15 to 70 mass %.

15. The rubber composition according to claim 12 , wherein
the rubber composition comprises a diene rubber and a carbon black;
the diene rubber comprises the modified polymer; and
a content of the modified polymer in the diene rubber is from 15 to 70 mass %.

16. The rubber composition according to claim 13 , wherein
the rubber composition comprises a diene rubber and a carbon black;
the diene rubber comprises the modified polymer; and
a content of the modified polymer in the diene rubber is from 15 to 70 mass %.

17. A tire produced by using the rubber composition described in claim 6 .

18. A tire produced by using the rubber composition described in claim 11 .

19. A tire produced by using the rubber composition described in claim 12 .

20. A tire produced by using the rubber composition described in claim 13 .

Assignees

• Yokohama Rubber Co Ltd

Inventors

• Takahashi Ryota
• Kato Manabu
• Okamatsu Takahiro
• Kirino Yoshiaki

Classifications

• C08C19/22 Primary

  Incorporating nitrogen atoms into the molecule · CPC title

• B65G2812/02198

  Non-metallic belts · CPC title

• B60C1/0016

  Compositions of the tread · CPC title

• B65G15/32

  made of rubber or plastics · CPC title

• C07C291/02

  containing nitrogen-oxide bonds · CPC title