Metallic or metallized reinforcement, 1HE surface of which is coated with a polybenzoxazine

Patent metadata

Field	Value
Publication number	US-11247510-B2
Application number	US-201616062990-A
Country	US
Kind code	B2
Filing date	Dec 5, 2016
Priority date	Dec 16, 2015
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

At least a metallic part of a metal or metallized reinforcer, at least the surface of which is at least partially metallic, is coated with a polybenzoxazine, the repeat units of which comprise at least one unit corresponding to the formulae (I) or (II):in which Z1 represents an at least divalent, aliphatic, cycloaliphatic or aromatic bonding group comprising at least one carbon atom and optionally at least one heteroatom selected from O, S, N and P; X1 and X2, which are identical or different, represent O or S; Ar1 and Ar2, which are identical or different, represent a substituted or unsubstituted phenylene group; and Z2 represents O or (S)n, the symbol “n” representing an integer equal to 1 or greater than 1. Such a reinforcement can be used for the reinforcement of a rubber article, in particular a motor vehicle tyre.

First claim

The invention claimed is:

1. A metal or metallized reinforcer, at least the surface of which is at least partially metallic, wherein at least said metallic part is coated with a polybenzoxazine, the repeat units of which comprise at least one unit corresponding to formula (I) or (II):

in which:
Z 1 represents an at least divalent, aliphatic, cycloaliphatic or aromatic bonding group comprising at least one carbon atom and optionally at least one heteroatom selected from O, S, N and P;
X 1 and X 2 , which are identical or different, represent O or S;
Ar 1 and Ar 2 , which are identical or different, represent a substituted or unsubstituted phenylene group; and
Z 2 represents O or (S) n , n representing an integer equal to 1 or greater than 1.

2. The metal or metallized reinforcer according to claim 1 , wherein Z 1 represents an aliphatic group comprising from 1 to 20 carbon atoms or a cycloaliphatic group comprising from 3 to 20 carbon atoms.

3. The metal or metallized reinforcer according to claim 2 , wherein Z 1 represents an aliphatic group comprising from 1 to 16 carbon atoms or a cycloaliphatic group comprising from 3 to 16 carbon atoms.

4. The metal or metallized reinforcer according to claim 2 , wherein Z 1 represents a C 1 -C 20 alkylene group.

5. The metal or metallized reinforcer according to claim 2 , wherein Z 1 represents a C 1 -C 16 alkylene group.

6. The metal or metallized reinforcer according to claim 1 , wherein Z 1 represents an aromatic group comprising from 6 to 30 carbon atoms.

7. The metal or metallized reinforcer according to claim 6 , wherein Z 1 represents an aromatic group comprising from 6 to 20 carbon atoms.

8. The metal or metallized reinforcer according to claim 1 , wherein Ar 1 and Ar 2 each represent an unsubstituted benzene ring.

9. The metal or metallized reinforcer according to claim 1 , wherein X 1 and X 2 each represent S.

10. The metal or metallized reinforcer according to claim 9 , wherein Z 2 represents O or S.

11. The metal or metallized reinforcer according to claim 10 , wherein Z 2 represents S.

12. The metal or metallized reinforcer according to claim 1 , wherein X 1 and X 2 each represent O.

13. The metal or metallized reinforcer according to claim 12 , wherein Z 2 represents O or S.

14. The metal or metallized reinforcer according to claim 13 , wherein Z 2 represents S.

15. The metal or metallized reinforcer according to claim 13 , wherein the repeat units comprise at least one unit corresponding to formulae (I-1) or (II-1):

in which:
x is an integer varying from 1 to 16.

16. The metal or metallized reinforcer according to claim 15 , wherein x is an integer varying from 1 to 12.

17. The metal or metallized reinforcer according to claim 12 , wherein the repeat units comprise at least one unit corresponding to formulae (I-1) or (II-1):

in which:
x is an integer varying from 1 to 16.

18. The metal or metallized reinforcer according to claim 17 , wherein x is an integer varying from 1 to 12.

19. The metal or metallized reinforcer according to claim 1 , wherein the metal or metallized reinforcer is in the form of a wire, film, tape or cord made of carbon steel.

20. The metal or metallized reinforcer according to claim 19 , wherein the carbon steel is a bright steel.

21. The metal or metallized reinforcer according to claim 19 , wherein the carbon steel is at least partially coated with at least one layer of a surface metal selected from the group consisting of aluminum, copper, zinc and alloys thereof.

22. The metal or metallized reinforcer according to claim 21 , wherein the surface metal is brass.

23. A rubber article reinforced with the metal or metallized reinforcer according to claim 1 .

24. The rubber article according to claim 23 , wherein the rubber article is a pneumatic or non-pneumatic motor vehicle tire.

Assignees

• Michelin & Cie

Inventors

• Fedurco Milan
• Ribezzo Marco

Classifications

• C09J181/02

  Polythioethers; Polythioether-ethers · CPC title

• B60C2009/0014

  Surface treatments of steel cords · CPC title

• B60C1/00

  Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition · CPC title

• C09D181/02

  Polythioethers; Polythioether-ethers · CPC title

• D07B1/0606

  Reinforcing cords for rubber or plastic articles · CPC title