Patent EP0410152A1 successfully refreshed from Google Patents.
EP0410152A1
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EP
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Rubber composition having excellent dynamic properties
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1990-06-26
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Granted: —
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Expires: 2010-06-26
Abstract
Abstract A rubber composition comprising a base rubber, carbon black and a dinitrodiamine compound represented by the formula [I], wherein X is a divalent aliphatic, alicyclic or aromatic group which may contain halogen or oxygen in the group, R¹ is hydrogen or an aliphatic, alicyclic or aromatic group, provided that two nitrogen atoms linking through X may further link through R¹ when both X and R¹ are the aliphatic groups, and R² and R³ independently of one another are each hydrogen or an alkyl of 1 to 12 carbon atoms, provided that R² and R³ may conjointly form a ring, is improved in its scorching without deterioration in its dynamic properties by incorporating thereto the following components (A) or (B): (A) N-(cyclohexylthio)phthalimide and a bismaleimide compound, or (B) 2,3,5,6-tetrachloro-1,4-benzoquinone.
Inventors
- 👤 Hideo Nagasaki
- 👤 Naoki Inui
- 👤 Shinichi Yachigo
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 06:08
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/32; C08K5/04; C08K5/07; C08K5/08; C08K5/34; C08K5/3412; C08K5/3415
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
189 words
A rubber composition comprising a base rubber of a natural and/or synthetic rubber, carbon black and, based on 100 parts by weight of the base rubber, from 0.1 to 10 parts by weight of a dinitrodiamine compound represented by the formula [I], wherein X is a divalent aliphatic, alicyclic or aromatic group which may contain halogen or oxygen in the group, R¹ is hydrogen or an aliphatic, alicyclic or aromatic group, provided that two nitrogen atoms linking through X may further link through R¹ when both X and R¹ are the aliphatic groups, and R² and R³ independently of one another are each hydrogen or an alkyl of 1 to 12 carbon atoms, provided that R² and R³ may conjointly form a ring, in combination with the following components (A) or (B): (A) from 0.05 to 0.3 part by weight of N-(cyclohexylthio)phthalimide and from 0.05 to 1 part by weight of a bismaleimide compound represented by the formula [II], wherein R is a divalent aliphatic, alicyclic or aromatic group which may contain a hetero atom in the group, or (B) from 0.1 to 3 parts by weight of 2,3,5,6-tetrachloro-1,4-benzoquinone.
Claim 2
Dependent Claim
189 words
A rubber composition comprising a base rubber of a natural and/or synthetic rubber, carbon black and, based on 100 parts by weight of the base rubber, from 0.1 to 10 parts by weight of a dinitrodiamine compound represented by the formula [I], wherein X is a divalent aliphatic, alicyclic or aromatic group which may contain halogen or oxygen in the group, R¹ is hydrogen or an aliphatic, alicyclic or aromatic group, provided that two nitrogen atoms linking through X may further link through R¹ when both X and R¹ are the aliphatic groups, and R² and R³ independently of one another are each hydrogen or an alkyl of 1 to 12 carbon atoms, provided that R² and R³ may conjointly form a ring, in combination with the following components (A) or (B): (A) from 0.05 to 0.3 part by weight of N-(cyclohexylthio)phthalimide and from 0.05 to 1 part by weight of a bismaleimide compound represented by the formula [II], wherein R is a divalent aliphatic, alicyclic or aromatic group which may contain a hetero atom in the group, or (B) from 0.1 to 3 parts by weight of 2,3,5,6-tetrachloro-1,4-benzoquinone.
Claim 3
Dependent Claim
30 words
The rubber composition according to claim 1, wherein the base rubber is a natural rubber or a blend mainly composed of a natural rubber and compounded with a synthetic rubber.
Claim 4
Dependent Claim
40 words
The rubber composition according to claim 1, wherein the base rubber is styrene-butadiene copolymer rubber or a blend mainly composed of styrene-butadiene copolymer rubber and compounded with a natural rubber or with butadiene rubber, and the component (B) is present.
Claim 5
Dependent Claim
36 words
The rubber composition according to claim 1, wherein the carbon black is present in an amount of from about 10 to about 150 parts by weight based on 100 parts by weight of the base rubber.
Claim 6
Dependent Claim
23 words
The rubber composition according to claim 1, wherein X in the formula [I] is an aliphatic group of 4 to 12 carbon atoms.
Claim 7
Dependent Claim
16 words
The rubber composition according to claim 1, wherein X in the formula [I] is phenylene or
Claim 8
Dependent Claim
15 words
The rubber composition according to claim 1, wherein R¹ in the formula [I] is hydrogen.
Claim 9
Dependent Claim
18 words
The rubber composition according to claim 1, wherein R² and R³ in the formula [I] are both methyl.
Claim 10
Dependent Claim
39 words
The rubber composition according to claim 1, wherein the dinitrodiamine compound is represented by the formula [I] in which X is an alkylene of 4 to 12 carbon atoms, R¹ is hydrogen, R² is methyl and R³ is methyl.
Claim 11
Dependent Claim
36 words
The rubber composition according to claim 1, wherein the dinitrodiamine compound is present in an amount of from about 0.2 to about 3 parts by weight based on 100 parts by weight of the base rubber.
Claim 12
Dependent Claim
70 words
The rubber composition according to claim 1, which comprises a base rubber of a natural and/or synthetic rubber, carbon black and, based on 100 parts by weight of the base rubber, 0.1 to 10 parts by weight of a dinitrodiamine compound represented by the formula [I], 0.05 to 0.3 part by weight of N-(cyclohexylthio)phthalimide, and 0.05 to 1 part by weight of a bismaleimide compound represented by the formula [II].
Claim 13
Dependent Claim
23 words
The rubber composition according to claim 11, wherein R in the formula [II] is an aromatic group of 6 to 8 carbon atoms.
Claim 14
Dependent Claim
23 words
The rubber composition according to claim 11, wherein R in the formula [II] is an aliphatic group of 4 to 8 carbon atoms.
Claim 15
Dependent Claim
55 words
The rubber composition according to claim 1, which comprises a base rubber of a natural and/or synthetic rubber, carbon black and, based on 100 parts by weight of the base rubber, 0.1 to 10 parts by weight of the dinitrodiamine compound represented by the formula [I], and 0.1 to 3 parts by weight of 2,3,5,6-tetrachloro-1,4-benzoquinone.
Claim 16
Dependent Claim
13 words
The rubber composition according to claim 14, which further comprises a scorch retarder.
Claim 17
Dependent Claim
10 words
An automobile tire prepared from the composition of claim 1.
Claim 18
Dependent Claim
16 words
The automobile tire according to claim 16, wherein the composition is used as a tread material.
Claim 19
Dependent Claim
11 words
A rubber vibration isolator prepared from the composition of claim 1.
References Cited (Backward Citations)
EP0253365A2
Cited
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