US 10,207,540 B2 · Functionalized polymer blends for improved wear

Abstract

A tire tread formed at least in part from a rubber composition that is based upon a cross-linkable rubber composition that may include between 50 phr and 90 phr of a first highly unsaturated elastomer being middle chain functionalized with an aminoalkoxysilane group and having a Tg of between −108° C. and −45° C. and between 10 phr and 50 phr of a second highly unsaturated elastomer being end-chain functionalized with a silanol group and having a Tg of between −108° C. and −10° C. The rubber composition may further include between 50 phr and 150 phr of a silica filler and a plasticizing system comprising between 5 phr and 120 phr of a plasticizing resin having a Tg of at least 25° C. and between 0 phr and 60 phr of a plasticizing liquid.

Claims15

Dependent claims

A tread for a tire, the tread comprising a rubber composition that is based upon a cross-linkable rubber composition, the cross-linkable rubber composition comprising, per 100 parts by weight of rubber (phr):

between 50 phr and 90 phr of a first highly unsaturated elastomer being middle chain functionalized with an aminoalkoxysilane group and having a Tg of between −108° C. and −80° C.;
between 10 phr and 50 phr of a second highly unsaturated elastomer being end-chain functionalized with a silanol group and having a Tg of between −60° C. and −15° C.;
between 50 phr and 150 phr of a silica filler;
a plasticizing system comprising between 5 phr and 120 phr of a plasticizing resin having a Tg of at least 25° C. and between 0 phr and 60 phr of a plasticizing liquid;
and
a curing system.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/033,635Filed 27 Oct 2014 · us provisional application

Priority

31 Oct 2013

Published

US 2016/0280007 A129 Sep 2016

Granted

19 Feb 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

B60C 1/0016
Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition: compositions of the tread
B60C 11/0008
Tyre tread bands; Tread patterns; Anti-skid inserts: characterised by the tread rubber
B60C 11/005
Comprising different tread rubber layers: with cap and base layers
C08L 9/06
Compositions of homopolymers or copolymers of conjugated diene hydrocarbons: copolymers with styrene

Functionalized polymer blends for improved wear

Life of this patent

Functionalized polymer blends for improved wear

Life of this patent

Abstract

Claims15