Tire having component with release coated surface and related processes

Patent metadata

Field	Value
Publication number	US-10857700-B2
Application number	US-201715814619-A
Country	US
Kind code	B2
Filing date	Nov 16, 2017
Priority date	Nov 17, 2016
Publication date	Dec 8, 2020
Grant date	Dec 8, 2020

Abstract

Disclosed herein are a tire comprising at least one component having a surface coated with a liquid release layer, a process for preparing a tire having at least one component with a surface coated with a release layer, and a cured tire comprising a tire body at least one component with a surface coated with a release layer. The release layer comprises at least one silicone rubber and at least one adhesive polymer which may be present in latex form in the liquid release layer.

First claim

What is claimed is:

1. A tire comprising at least one component having a surface coated with a liquid release layer comprising at least one silicone rubber latex and at least one adhesive polymer latex, wherein the liquid release layer contains silicone rubber in an amount of 5-25% by weight, based upon the total weight of the liquid release layer, adhesive polymer in an amount of 10-50% by weight, based upon the total weight of the liquid release layer, and no more than 10% by weight, based upon the total weight of the liquid release layer, of any filler selected from the group consisting of talc, kaolin, chalk, graphite, rock dust, mica, zinc oxide, titanium oxide, magnesium oxide, silica, calcium carbonate, alumina, carbon black, and combinations thereof.

2. The tire of claim 1 , wherein the weight amount of silicone rubber to weight amount of adhesive polymer is at least 1:1.5.

3. The tire of claim 1 , wherein the liquid release layer comprises an aqueous mixture of the at least one silicone rubber latex and at least one adhesive polymer latex.

4. The tire of claim 1 , wherein the at least one component having a coated surface comprises at least one of an inner liner layer, a body ply, or a run-flat insert.

5. The tire of claim 2 , wherein the at least one component having a coated surface comprises at least one of an inner liner layer, a body ply, or a run-flat insert.

6. The tire of claim 1 , wherein the at least one adhesive polymer latex comprises at least one adhesive polymer selected from: acrylates, polyamides, polyesters, polynitriles, polyvinyls, cellulose-based, fluoro-based, imides, polyurethanes, phenol formaldehydes, polyolefins, and combinations thereof.

7. The tire of claim 1 , wherein the liquid release layer contains no more than 5% by weight of hydrocarbon solvent, based upon the total weight of the liquid release layer.

8. The tire of claim 1 , wherein the tire component having a coated surface comprises an inner liner layer comprising a majority by weight butyl rubber, optionally halogenated.

9. A process for preparing a tire comprising at least one component with a surface coated with a release layer, the process comprising:
a. providing a tire component having an upper surface and lower surface wherein the lower surface is positioned radially inward within the tire,
b. providing a liquid mixture of at least one silicone rubber latex and at least one adhesive polymer latex, and
c. coating the lower surface of the tire component with the liquid mixture to provide a release layer thereon,

wherein the liquid mixture contains silicone rubber in an amount of 5-25% by weight, based upon the total weight of the liquid mixture, adhesive polymer in an amount of 10-50% by weight, based upon the total weight of the liquid mixture, and no more than 10% by weight, based upon the total weight of the liquid mixture, of any filler selected from the group consisting of talc, kaolin, chalk, graphite, rock dust, mica, zinc oxide, titanium oxide, magnesium oxide, silica, calcium carbonate, alumina, carbon black, and combinations thereof.

10. The process of claim 9 , wherein weight amount of silicone rubber to weight amount of adhesive polymer is at least 1:1.5.

11. The process of claim 9 , wherein the at least one adhesive polymer latex comprises at least one adhesive polymer selected from: acrylates, polyamides, polyesters, polynitriles, polyvinyls, cellulose-based, fluoro-based, imides, polyurethanes, phenol formaldehydes, polyolefins, and combinations thereof.

12. The process of claim 9 , wherein the at least one component with a surface coating comprises at least one of an inner liner layer, a body ply, or a run-flat insert.

13. The process of claim 9 , wherein the liquid mixture contains no more than 5% by weight of hydrocarbon solvent, based upon the total weight of the liquid mixture.

14. The process of claim 9 , wherein the at least one component with a surface coating comprises an inner liner layer comprising a majority by weight butyl rubber, optionally halogenated.

15. A cured tire comprising a tire body and at least one component with a surface coated with a release layer, the at least one the component selected from an inner liner, a body ply and a run-flat insert, wherein
a. the component has an upper surface and lower surface with the lower surface positioned radially inward within the tire, wherein the lower surface is coated with a release layer comprising at least one silicone rubber and at least one adhesive polymer latex, and
b. the upper surface of the component is positioned radially outward within the tire,

wherein the release layer contains no more than 10% by weight, based upon the total weight of the release layer, of any filler selected from the group consisting of talc, kaolin, chalk, graphite, rock dust, mica, zinc oxide, titanium oxide, magnesium oxide, silica, calcium carbonate, alumina, carbon black, and combinations thereof.

16. The cured tire of claim 15 , wherein the release layer contains a weight amount of silicone rubber to weight amount of adhesive polymer of at least 1:1.5.

17. The cured tire of claim 15 , wherein the at least one adhesive polymer latex comprises at least one adhesive polymer selected from: acrylates, polyamides, polyesters, polynitriles, polyvinyls, cellulose-based, fluoro-based, imides, polyurethanes, phenol formaldehydes, polyolefins, and combinations thereof.

18. The cured tire of claim 15 , wherein the release layer contains no more than 5% by weight, based upon the total weight of the release layer, of any filler selected from the group consisting of talc, kaolin, chalk, graphite, rock dust, mica, zinc oxide, titanium oxide, magnesium oxide, silica, calcium carbonate, alumina, and carbon black.

19. The cured tire of claim 15 , wherein the at least one component with a coated surface comprises a rubber inner liner layer comprising a majority by weight butyl rubber, optionally halogenated.

20. The cured tire of claim 15 , further comprising a foam noise damper, wherein the inner liner layer comprises its upper surface positioned radially outward within the tire, its lower coated surface positioned radially inward within the tire and the lower coated surface of the inner liner layer contacts the foam noise damper.

Assignees

• Bridgestone Americas Tire Operations Llc

Inventors

• Balnis Craig R

Classifications

• B60C2001/0033

  Compositions of the sidewall inserts, e.g. for runflat · CPC title

• B60C1/0008

  Compositions of the inner liner · CPC title

• B29D30/0654

  Flexible cores therefor, e.g. bladders, bags, membranes, diaphragms (elastic cores or mandrels for shaping of plastics B29C33/505; bags for isostatic pressing in compression moulding B29C43/12, B29C43/3642) · CPC title

• B29C33/64 Primary

  Silicone · CPC title

• C09D183/04

  Polysiloxanes · CPC title