Tire with tread with oxidized carbon black

Patent metadata

Field	Value
Publication number	US-10457797-B2
Application number	US-201715478297-A
Country	US
Kind code	B2
Filing date	Apr 4, 2017
Priority date	Apr 4, 2017
Publication date	Oct 29, 2019
Grant date	Oct 29, 2019

Abstract

This invention relates to a tire with a tread of rubber composition with reinforcing filler containing oxidized rubber reinforcing carbon black together with tris (2-ethyl hexyl) phosphate. In one embodiment, the invention relates to a truck tire intended for heavy duty performance with a tread rubber composition comprised of natural cis 1,4-polyisoprene rubber containing reinforcing filler comprised of oxidized rubber reinforcing carbon black together with tris (2-ethyl hexyl) phosphate.

First claim

What is claimed is:

1. A pneumatic tire having a circumferential rubber tread of a rubber composition comprised of, based on parts by weight per 100 parts by weight elastomer (phr):
(A) 100 phr of cis 1,4-polyisoprene natural rubber,
(B) about 25 to about 125 phr of reinforcing filler comprised of about 55 to about 100 weight percent rubber reinforcing black comprised of from about 20 to about 100 weight percent surface oxidized carbon black and about 10 to about 50 phr of precipitated silica together with silica coupler having a moiety reactive with hydroxyl groups on said precipitated silica and another different moiety interactive with said diene-based elastomers, and
(C) 1 to 5 phr of tris (2-ethyl hexyl) phosphate.

2. The tire of claim 1 wherein said oxidized carbon black is at least one of hydrogen peroxide or ozone treated rubber reinforcing carbon black.

3. The tire of claim 1 wherein said oxidized carbon black is a rubber reinforcing carbon black containing at least one of carboxyl and hydroxyl groups on its surface.

4. The tire of claim 1 wherein said precipitated silica is a product of reaction of said precipitated silica and said silica coupler within said rubber composition.

5. The tire of claim 1 wherein said silica coupler is comprised of:
(A) bis(3-trialkoxysilylalkyl) polysulfide having an average of from 2 to about 4 connecting sulfur atoms in its polysulfidic bridge, or
(B) alkoxyorganomercaptosilane.

6. The tire of claim 5 wherein said silica coupler is comprised of bis(3-triethoxysilylpropyl) polysulfide.

7. The tire of claim 5 wherein said coupler is comprised of alkoxyorganomercaptosilane.

8. The tire of claim 1 wherein said precipitated silica is a composite of said precipitated silica pre-reacted with said silica coupler.

9. The tire of claim 8 wherein said silica coupler is an alkoxyorganomercaptosilane.

10. The tire of claim 8 wherein said rubber composition contains additional precipitated silica and/or additional silica coupler.

Assignees

• Goodyear Tire & Rubber

Inventors

• Sandstrom Paul Harry

Classifications

• C09C1/565

  comprising an oxidative treatment with oxygen, ozone or oxygenated compounds, e.g. when such treatment occurs in a region of the furnace next to the carbon black generating reaction zone · CPC title

• C09C1/56

  Treatment of carbon black {; Purification} · CPC title

• C09C1/48

  Carbon black · CPC title

• B60C1/0016

  Compositions of the tread · CPC title

• C08K13/06

  Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00 · CPC title