EP0819731A1
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EP
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Diene rubber composition
Assignee: Zeon Corp
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Filing: 1996-03-29
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Granted: —
•
Expires: 2016-03-29
Abstract
Abstract Disclosed herein are a diene rubber composition comprising 100 parts by weight of a diene rubber component composed of 10-100 wt.% of an amino group-containing diene copolymer rubber (A) having a composition (based on the bound amount) of 40-99.95 wt.% of a conjugated diene monomer, 0.05-20 wt.% of an amino group-containing monomer and 0-55 wt.% of an aromatic vinyl monomer, and 0-90 wt.% of another diene rubber (B), and 10-150 parts by weight of silica having a specific surface area of 50-220 m<2>/g as determined by nitrogen absorption (BET method), and having excellent heat build-up resistance, tensile properties, abrasion properties and processability, and a preparation method thereof.
Inventors
- 👤 Yukio Takagishi
- 👤 Masao Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 02:22
CPC Classifications
C; C08; C08L; C08L7/00; C08K; C08K3/00; C08K3/34; C08K3/36; C08K5/00; C08K5/54; C08L19/00; C08L19/006; C08L83/00; C08L83/04; C08L9/00; C08L9/06
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
89 words
A diene rubber composition comprising 100 parts
by weight of a diene rubber component composed of 10-100
wt.% of an amino group-containing diene copolymer rubber
(A) having a composition (based on the bound amount) of
40-99.95 wt.% of a conjugated diene monomer, 0.05-20 wt.%
of an amino group-containing monomer and 0-55 wt.% of an
aromatic vinyl monomer, and 0-90 wt.% of another diene
rubber (B), and 10-150 parts by weight of silica having a
specific surface area of 50-220 m 2 /g as determined by
nitrogen absorption (BET method).
Claim 2
Dependent Claim
25 words
The diene rubber composition according to Claim 1,
wherein a Mooney viscosity (ML 1+4 , 100°C) of the amino
group-containing diene copolymer rubber is 20-150.
Claim 3
Dependent Claim
19 words
The diene rubber composition according to Claim 1
or 2, wherein the conjugated diene monomer is 1,3-butadiene
or 2-methyl-1,3-butadiene.
Claim 4
Dependent Claim
20 words
The diene rubber composition according to any one
of Claims 1 to 3, wherein the aromatic vinyl monomer is
styrene.
Claim 5
Dependent Claim
29 words
The diene rubber composition according to any one
of Claims 1 to 4, wherein the amino group-containing diene
copolymer rubber has a tertiary amino group as the amino
group.
Claim 6
Dependent Claim
39 words
The diene rubber composition according to any one
of Claims 1 to 5, wherein the amino group-containing vinyl
monomer is at least one selected from among aminoalkyl
acrylates, aminoalkylacrylamides, amino-aromatic vinyl
compounds and vinyl compounds having a nitrogen-containing
heterocycle.
Claim 7
Dependent Claim
26 words
The diene rubber composition according to any one
of Claims 1 to 6, wherein the amino group-containing vinyl
monomer is a tertiary amino group-containing vinyl monomer.
Claim 8
Dependent Claim
41 words
The diene rubber composition according to any one
of Claims 1 to 7, wherein the tertiary amino group-containing
vinyl monomer is at least one selected from
among N-disubstituted aminoalkyl acrylate, N-disubstituted
aminoalkylacrylamide, N-disubstituted amino-aromatic vinyl
compounds and pyridyl group-containing vinyl compounds.
Claim 9
Dependent Claim
38 words
The diene rubber composition according to any one
of Claims 1 to 6, wherein another diene rubber (B) is at
least one selected from among natural rubber,
polybutadiene rubber, polyisoprene rubber, styrene-butadiene
copolymer rubber and styrene-isoprene-butadiene
terpolymer rubber.
Claim 10
Dependent Claim
39 words
The diene rubber composition according to any one
of Claims 1 to 9, wherein the rubber component comprises
the amino group-containing diene copolymer rubber (A) and
another diene rubber (B) at a ratio (by weight) of 20:80
to 90:10.
Claim 11
Dependent Claim
37 words
The diene rubber composition according to any one
of Claims 1 to 10, wherein the specific surface area of
the silica as determined by nitrogen absorption (BET
method) is within a range of 80-200 m 2 /g.
Claim 12
Dependent Claim
36 words
The diene rubber composition according to any one
of Claims 1 to 11, wherein the silica is compounded in a
proportion of 20-120 parts by weight per 100 parts by
weight of the diene rubber component.
Claim 13
Dependent Claim
31 words
The diene rubber composition according to Claim
12, wherein the silica is compounded in a proportion of
40-80 parts by weight per 100 parts by weight of the diene
rubber component.
Claim 14
Dependent Claim
36 words
The diene rubber composition according to any one
of Claims 1 to 13, wherein the silica is at least one
selected from among dry process white carbon, wet process
white carbon, colloidal silica and precipitated silica.
Claim 15
Dependent Claim
20 words
The diene rubber composition according to any one
of Claims 1 to 14, which further comprises a silane
coupling agent.
Claim 16
Independent Claim
121 words
A method for preparing a diene rubber composition,
comprising compounding silica having a specific surface
area of 50-220 m 2 /g as determined by nitrogen absorption
(BET method) in a proportion of 10-150 parts by weight per
100 parts by weight of a diene rubber component composed
of 10-100 wt.% of an amino group-containing diene
copolymer rubber (A) having a composition (based on the
bound amount) of 40-99.95 wt.% of a conjugated diene
monomer, 0.05-20 wt.% of an amino group-containing monomer
and 0-55 wt.% of an aromatic vinyl monomer, and 0-90 wt.%
of another diene rubber (B), wherein a whole amount of the
silica to be compounded with the diene rubber component is
added and mixed in at least two portions.
Claim 17
Dependent Claim
55 words
The method according to Claim 16 for preparing
the diene rubber composition, wherein 10 to 90% of the
whole amount of the silica to be compounded with the diene
rubber component is added and mixed on the first time, and
the remainder, 90 to 10%, is added and mixed on and after
the second time.
Claim 18
Dependent Claim
33 words
The method according to Claim 16 or 17 for
preparing the diene rubber composition, wherein other
compounding agents are added and mixed upon the addition
of silica on and after the second time.
Claim 19
Independent Claim
28 words
The method according to any one of Claims 16 to
18 for preparing the diene rubber composition, wherein the
mixing is conducted at a kneading temperature of 80-200°C.
References Cited (Backward Citations)
No citation records indexed.
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