EP1031604A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Silica-filled diene-based rubbers containing tin organoacid salt compounds
Assignee: Goodyear Tire and Rubber Co
•
Filing: 2000-02-16
•
Granted: —
•
Expires: 2020-02-16
Abstract
Abstract The present invention relates to a composition and a method of processing a composition containing (a) 100 parts by weight of an elastomer containing olefinic unsaturation selected from the group consisting of conjugated diene homopolymers and copolymers and from copolymers of at least one conjugated diene and aromatic vinyl compound; (b) from 10 to 150 phr of a silica; (c) from 0.1 to 15 phr of a sulfur containing organosilicon compound of the formula Z-Alk-S n -Alk-Z in which Z is selected from the group consisting of where R 1 is an alkyl group of 1 to 4 carbon atoms, cyclohexyl or phenyl; R 2 is alkoxy of 1 to 8 carbon atoms, or cycloalkoxy of 5 to 8 carbon atoms; Alk is a divalent hydrocarbon of 1 to 18 carbon atoms and n is an integer of 2 to 8; and (d) from 0.1 to 10 phr of a tin organoacid salt selected from the group consisting of compounds of the formula where R 3 and R 4 are independently selected from the group consisting of alkyls having from 1 to 20 carbon atoms, alkenyls having from 1 to 20 carbon atoms and aryls and alkaryls having from 6 to 20 carbon atoms.
Inventors
- 👤 Martin Paul Cohen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 19:34
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54; C08K5/548; C08K5/56; C08K5/57
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
190 words
A rubber composition characterized by (a) 100 parts by weight of an elastomer
containing olefinic unsaturation selected from the group
consisting of conjugated diene homopolymers and copolymers
and from copolymers of at least one conjugated diene and
aromatic vinyl compound; (b) from 10 to 150 phr of a silica; (c) from 0.1 to 15 phr of a sulfur containing
organosilicon compound of the formula Z-Alk-S n -Alk-Z in which Z is selected from the group consisting of where R1 is an alkyl group of 1 to 4 carbon atoms,
cyclohexyl or phenyl; R2 is alkoxy of 1 to 8 carbon atoms, or
cycloalkoxy of 5 to 8 carbon atoms; Alk is a divalent hydrocarbon of 1 to 18 carbon
atoms and n is an integer of 2 to 8; and (d) from 0.1 to 10 phr of a tin organoacid salt
selected from the group consisting of compounds of the
formula where R3 and R4 are independently selected from the
group consisting of alkyls having from 1 to 20 carbon
atoms, alkenyls having from 1 to 20 carbon atoms and aryls
and alkaryls having from 6 to 20 carbon atoms.
Claim 2
Dependent Claim
50 words
The rubber composition of claim 1 characterized
in that said elastomer containing olefinic unsaturation is
selected from the group consisting of natural rubber,
neoprene, polyisoprene, butyl rubber, polybutadiene,
styrene-butadiene copolymer, isoprene-butadiene rubber,
styrene/isoprene/butadiene rubber, methyl methacrylate-butadiene
copolymer, isoprene-styrene copolymer, methyl
methacrylate-isoprene copolymer, acrylonitrile-isoprene
copolymer, acrylonitrile-butadiene copolymer, EPDM and
mixtures thereof.
Claim 3
Dependent Claim
17 words
The rubber composition of claim 1 characterized
in that the tin organoacid salt is dibutyl tin dilaurate.
Claim 4
Dependent Claim
29 words
The rubber composition of claim 1 characterized
in that the tin organoacid salt is selected from the group
consisting of stannous octoate, stannous oleate, stannous
laurate and stannous naphthenoate.
Claim 5
Dependent Claim
38 words
The rubber composition of claim 1 characterized
in that said silica rubber composition is
thermomechanically mixed at a rubber temperature in a range
of from 140°C to 190°C for a mixing time of from 1 to 20
minutes.
Claim 6
Independent Claim
195 words
A method of processing a rubber composition which
comprises mixing (a) 100 parts by weight of an elastomer
containing olefinic unsaturation selected from the group
consisting of conjugated diene homopolymers and copolymers
and from copolymers of at least one conjugated diene and
aromatic vinyl compound; (b) from 10 to 150 phr of a silica; (c) from 0.1 to 15 phr of a sulfur containing
organosilicon compound of the formula Z-Alk-S n -Alk-Z in which Z is selected from the group consisting of where R1 is an alkyl group of 1 to 4 carbon atoms,
cyclohexyl or phenyl; R2 is alkoxy of 1 to 8 carbon atoms, or
cycloalkoxy of 5 to 8 carbon atoms; Alk is a divalent hydrocarbon of 1 to 18 carbon
atoms and n is an integer of 2 to 8; and (d) from 0.1 to 10 phr of a tin organoacid salt
selected from the group consisting of compounds of the
formula where R3 and R4 are independently selected from the
group consisting of alkyls having from 1 to 20 carbon
atoms, alkenyls having from 1 to 20 carbon atoms and aryls
and alkaryls having from 6 to 20 carbon atoms.
Claim 7
Dependent Claim
47 words
The method of claim 6 wherein said elastomer
containing olefinic unsaturation is selected from the group
consisting of natural rubber, neoprene, polyisoprene, butyl
rubber, polybutadiene, styrene-butadiene copolymer,
isoprene-butadiene rubber, styrene/isoprene/butadiene
rubber, methyl methacrylate-butadiene copolymer, isoprene-styrene
copolymer, methyl methacrylate-isoprene copolymer,
acrylonitrile-isoprene copolymer, acrylonitrile-butadiene
copolymer, EPDM and mixtures thereof.
Claim 8
Dependent Claim
14 words
The method of claim 6 wherein the tin organoacid
salt is dibutyl tin dilaurate.
Claim 9
Dependent Claim
26 words
The method of claim 6 wherein the tin organoacid
salt is selected from the group consisting of stannous
octoate, stannous oleate, stannous laurate and stannous
naphthenoate.
Claim 10
Dependent Claim
35 words
The method of claim 6 wherein said silica rubber
composition is thermomechanically mixed at a rubber
temperature in a range of from 140°C to 190°C for a mixing
time of from 1 to 20 minutes.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.