Patent US4281085A successfully refreshed from Google Patents.
US4281085A
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Rubber compound capable of giving a vulcanized rubber having a high modulus of elasticity
Assignee: JSR Corp
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Filing: 1979-05-10
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Granted: 1981-07-28
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Expires: 1999-05-10
Abstract
Abstract A novel rubber compound which comprises 100 parts by weight of a rubber component (I), 0.1-15 parts by weight of an amine salt of carboxylic acid (II) and 0-7 parts by weight of sulfur (III), said rubber component (I) consisting of 40-100% by weight of an elastomeric copolymer (A) and 60-0% by weight of a vulcanizable rubber (B); said elastomeric copolymer (A) being composed of a C 4 or C 5 conjugated diene, styrene, and a glycidyl group-containing monomer; the amount of said conjugated diene, the total amount of said conjugated diene and said styrene and the amount of said glycidyl group-containing monomer being 50% by weight or more, 80-99.5% weight and 0.5-20% by weight, respectively, based on the weight of said elastomeric copolymer (A); and the content of said glycidyl group-containing monomer in said rubber component (I) being 0.5% by weight or more, does not undergo scorching at the time of processing and gives, when vulcanized (crosslinked), a vulcanized rubber having a high modulus of elasticity.
Inventors
- 👤 Hiroharu Ikeda
- 👤 Yasuyuki Shimozato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:28
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5093; C08K5/16; C08K5/17; C08K5/19; C08L; C08L19/00; C08L19/006; C08L7/00; C08L9/00; C08L9/06
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
102 words
A rubber compound, which comprises: (1) 100 parts by weight of a rubber component, (2) 0.1-15 parts by weight of an amine salt of a carboxylic acid, and (3) 0-7 parts by weight of sulfur, said rubber component (1) comprising an elastomeric copolymer being composed of a C 4 or C 5 conjugated diene, styrene and a glycidyl group-containing monomer; the content of said conjugated diene, the total amount of said conjugated diene and said styrene and the content of said glycidyl group-containing monomer in said elastomeric copolymer being 50% by weight or more, 80-99.5% by weight and 0.5-20% by weight, respectively.
Claim 2
Dependent Claim
102 words
A rubber compound, which comprises: (1) 100 parts by weight of a rubber component, (2) 0.1-15 parts by weight of an amine salt of a carboxylic acid, and (3) 0-7 parts by weight of sulfur, said rubber component (1) comprising an elastomeric copolymer being composed of a C 4 or C 5 conjugated diene, styrene and a glycidyl group-containing monomer; the content of said conjugated diene, the total amount of said conjugated diene and said styrene and the content of said glycidyl group-containing monomer in said elastomeric copolymer being 50% by weight or more, 80-99.5% by weight and 0.5-20% by weight, respectively.
Claim 3
Dependent Claim
92 words
The rubber compound according to claim 1, wherein said amine salt of a carboxylic acid is a salt formed between a carboxylic acid selected from the group consisting of C 2 -C 20 aliphatic monocarboxylic or dicarboxylic acids; alicyclic monocarboxylic or dicarboxylic acids having 20 carbon atoms or less; aromatic monocarboxylic or dicarboxylic acids having 20 carbon atoms or less and C 2 -C 20 carboxylic acids having hydroxyl groups or thiol groups, and an amine selected from the group consisting of C 1 -C 20 aliphatic or alicyclic monoamines and polyamines.
Claim 4
Dependent Claim
28 words
The rubber compound according to claim 1, wherein said amine salt of carboxylic acid is an amine salt of a carboxylic acid having hydroxyl group or thiol group.
Claim 5
Dependent Claim
18 words
The rubber compound according to claim 1 or 2, wherein said amine is a monoamine or a diamine.
Claim 6
Dependent Claim
20 words
The rubber compound according to claim 1 or 2, wherein said amine salt of carboxylic acid is a piperazine salt.
Claim 7
Dependent Claim
20 words
The rubber compound according to claim 1 or 2, wherein said amine salt of carboxylic acid is a piperidine salt.
Claim 8
Dependent Claim
57 words
The rubber compound according to claim 1 or 2, wherein said carboxylic acid is selected from the group consisting of acetic acid, butyric acid, octanoic acid, stearic acid, benzoic acid, toluic acid, oxalic acid, malonic acid, succinic acid, adipic acid, sebacic acid, phthalic acid, glycolic acid, malic acid, lactic acid, citric acid, p-oxybenzoic acid, and thioglycolic acid.
Claim 9
Dependent Claim
29 words
The rubber compound according to claim 1 or 2, wherein said carboxylic acid is selected from the group consisting of glycolic acid, malic acid, lactic acid and p-oxybenzoic acid.
Claim 10
Dependent Claim
38 words
The rubber compound according to claim 1 or 2, wherein said amine is selected from the group consisting of ethylamine, butylamine, ethanolamine, diethylamine, dibutylamine, piperidine, ethyleneimine, tributylamine, hexamethylenediamine, p-phenylenediamine, N,N'-dimethylethylenediamine, N,N'-dimethyl-p-phenylenediamine, piperazine, triethylenediamine, diethylenetriamine, triethylenetetramine, hexamethylenetetramine and polyethyleneimine.
Claim 11
Dependent Claim
23 words
The rubber compound according to claim 1 or 2, wherein said amine is selected from the group consisting of piperazine, hexamethylenediamine and piperidine.
Claim 12
Dependent Claim
21 words
The rubber compound according to claim 5, wherein said carboxylic acid is glycolic acid, malic acid, lactic acid or p-oxybenzoic acid.
Claim 13
Dependent Claim
21 words
The rubber compound according to claim 6, wherein said carboxylic acid is glycolic acid, malic acid, lactic acid, or p-oxybenzoic acid.
Claim 14
Dependent Claim
28 words
The rubber compound according to claim 1, wherein the content of sulfur is 0.5-7 parts by weight based on 100 parts by weight of the rubber component (I).
Claim 15
Dependent Claim
36 words
The rubber compound according to claim 1, 2 or 3, wherein the amount of said amine salt of said carboxylic acid added is 1-10 parts by weight per 100 parts by weight of rubber component (I).
Claim 16
Dependent Claim
27 words
The rubber compound according to claim 1, wherein said amine salt of a carboxylic acid is the hexamethylenediamine salt of adipic acid, sebacic acid or succinic acid.
References Cited (Backward Citations)
US3702877A
Cited
US4094831A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-27 | 1985-01-26 | 1985-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-27 | 1989-01-26 | 1989-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-27 | 1993-01-26 | 1993-07-28 | $7700.00 | Window Closed / Lapsed |