US 2023/0140989 A1Published application

Silica reinforced rubber composition and tire component

AssigneeThe Goodyear Tire & Rubber Company

InventorsJungmee Kang, Bruce Raymond Hahn, Justin Yinket Che, Brad Stephen Gulas, George Jim Papakonstantopoulos, Stacey Lynne Dean-Sioss

Life of this patent

Estimating the term…

patentgrep

Loading patent…

Abstract

The present invention is directed to improved tire tread compositions, such as silica-filled tire tread compositions, and tires using the same. In one embodiment, a tire tread is provided that includes a diene-based elastomer, a reinforcing filler that includes an inorganic filler (e.g., silica), and a plurality of silane compounds including bis(dialkylalkoxysilyl-alkyl) polysulfide coupling agent and at least one alkoxysilane compound selected from a hydrophobating bis(trialkoxyl)silane coupling and a hydrophobating mono(trialkoxyl)silane dispersing agent.

Claims20

Dependent claims

A tire tread composition comprising:

a diene-based elastomer;
a reinforcing filler including silica;
and
a plurality of silane compounds comprising:
i) a bis(dialkylalkoxysilyl-alkyl) polysulfide coupling agent having a general Formula (I):
R2(R1O)Si—(CH2)n—Sp—(CH2)m—Si(OR2)R32 (I);
and
ii) at least one alkoxysilane compound selected from the group consisting of:
a) a hydrophobating bis(trialkoxyl)silane coupling agent having a general Formula (II):
(R1O)3Si—R4—Si(OR2)3 (II), and
b) a hydrophobating mono(trialkoxyl)silane dispersing agent having a general Formula (III):
(R1O)3Si—R5 (III);
wherein R, R1, R2, and R3 may be identical or different, each selected from monovalent C1-C5 straight chain or branched alkyl groups, R4 is selected from divalent C3-C18 straight chain or branched alkyl or alkenyl groups or aromatic groups, R5 is selected from monovalent C3-C18 straight chain or branched alkyl or alkenyl groups or aromatic groups, m and n may be identical or different, each in a range from 3 to 18, and p is in a range from 2 to 4.

10 more elements

A tire comprising:

a tire tread including a tire tread composition, the tire tread composition comprising:
a diene-based elastomer;
a reinforcing filler including silica;
and
a plurality of silane compounds comprising:
iii) a bis(dialkylalkoxysilyl-alkyl) polysulfide coupling agent having a general Formula (I):
R2(R1O)Si—(CH2)n—Sp—(CH2)m—Si(OR2)R32 (I);
and
iv) at least one alkoxysilane compound selected from the group consisting of:
c) a hydrophobating bis(trialkoxyl)silane coupling agent having a general Formula (II):
(R1O)3Si—R4—Si(OR2)3 (II), and
d) a hydrophobating mono(trialkoxyl)silane dispersing agent having a general Formula (III):
(R1O)3Si—R5 (III);
wherein R, R1, R2, and R3 may be identical or different with each selected from monovalent C1-C5 straight chain or branched alkyl groups, R4 is selected from divalent C3-C18 straight chain or branched alkyl or alkenyl groups or aromatic groups, R5 is selected from monovalent C3-C18 straight chain or branched alkyl or alkenyl groups or aromatic groups, m and n may be identical or different with each in a range from 3 to 18 and p is in a range from 2 to 4.

11 more elements

Dependencies are inferred from the claim text.