Glass-resin composite-based multi-composite material

Patent metadata

Field	Value
Publication number	US-11780772-B2
Application number	US-201917297878-A
Country	US
Kind code	B2
Filing date	Nov 27, 2019
Priority date	Nov 30, 2018
Publication date	Oct 10, 2023
Grant date	Oct 10, 2023

Abstract

Multicomposite material (R 1 , R 2 ) including at least one monofilament ( 10 ) made of glass-resin composite including glass filaments ( 101 ) embedded in a thermoset polyester resin ( 102 ), characterized in that said monofilament is coated with at least one layer ( 12 ) of benzoxazine; use of such a material as reinforcer in finished articles or semi-finished products made of rubber; finished articles or semi-finished products made of rubber, such as vehicle tyres, reinforced with such a material.

First claim

The invention claimed is:

1. A multicomposite material comprising at least one monofilament made of glass-resin composite including glass filaments embedded in a thermoset polyester resin,
wherein the at least one monofilament is coated with at least one layer of benzoxazine.

2. The multicomposite material according to claim 1 , wherein the at least one layer of benzoxazine includes a benzoxazine monomer.

3. The multicomposite material according to claim 2 , wherein the benzoxazine monomer is a monobenzoxazine corresponding to formula (A)

in which R represents a hydrocarbon-based radical which may include a heteroatom.

4. The multicomposite material according to claim 2 , wherein the benzoxazine monomer is a bis-benzoxazine.

5. The multicomposite material according to claim 4 , wherein the bis-benzoxazine corresponds to at least one of the formulae (B) or (C)

in which:
X represents an at least divalent, aliphatic, cycloaliphatic or aromatic bonding group, including at least one carbon atom;
Z represents an at least divalent bonding group; and
the two radicals R, which may be identical or different, represent a hydrocarbon-based radical which may include a heteroatom.

6. The multicomposite material according to claim 1 , wherein the at least one layer of benzoxazine includes a polybenzoxazine, the repeating units of which include at least one unit corresponding to formula (F-I) and/or, after opening of the oxazine rings, to formula (F-II)

in which X represents an at least divalent, aliphatic, cycloaliphatic or aromatic bonding group, including at least one carbon atom.

7. The multicomposite material according to claim 1 , wherein the at least one layer of benzoxazine includes a polybenzoxazine, the repeating units of which include at least one unit corresponding to formula (G-I) and/or, after opening of the oxazine rings, to formula (G-II)

in which Z represents an at least divalent bonding group.

8. The multicomposite material according to claim 7 , wherein the repeating units include at least one unit corresponding to formula (H-I) and/or, after opening of the oxazine rings, to formula (H-II)

9. The multicomposite material according to claim 1 , wherein the thermoset polyester resin is a vinyl ester resin.

10. The multicomposite material according to claim 9 , wherein the thermoset polyester resin is an epoxy vinyl ester resin.

11. The multicomposite material according to claim 1 , wherein the multicomposite material is in the form of a longilinear reinforcing element.

12. The multicomposite material according to claim 11 , wherein a diameter of the longilinear reinforcing element is between 0.3 and 50 mm.

13. The multicomposite material according to claim 12 , wherein the diameter of the longilinear reinforcing element is within a range from 0.5 to 30 mm.

14. A multilayer laminate including at least one multicomposite material according to claim 11 positioned between and in contact with two layers of rubber composition.

15. A finished article or semi-finished product made of rubber including a multilayer laminate according to claim 14 .

16. A finished article or semi-finished product made of rubber including a multicomposite material according to claim 11 .

17. A vehicle tire including a multilayer laminate according to claim 14 .

18. A vehicle tire including a multicomposite material according to claim 11 .

Assignees

• Michelin & Cie

Inventors

• Fedurco Milan
• Delfino Antonio
• Tornare Marcel

Classifications

• C03C25/323 Primary

  Polyesters, e.g. alkyd resins · CPC title

• C03C25/25

  Non-macromolecular compounds · CPC title

• C08J5/08

  glass fibres · CPC title

• C08J2363/10

  Epoxy resins modified by unsaturated compounds · CPC title

• B60C1/00 Primary

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