Patent US3856762A successfully refreshed from Google Patents.
US3856762A
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Sulfonamide additives for sulfur vulcanizable polymers
Assignee: Goodyear Tire and Rubber Co
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Filing: 1972-06-26
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Granted: 1974-12-24
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Expires: 1992-06-26
Abstract
Abstract Sulfonamides such as N-methyl-N-(piperidinothio)-ptoluenesulfonamide are used to affect the vulcanization characteristics of sulfur vulcanizable polymers by increasing the state of vulcanization and/or improving scorch resistance and/or increasing the rate of vulcanization.
Inventors
- 👤 R Hopper
- 👤 J Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:54
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/22; C07D295/26; C08; C08K; C08K5/00; C08K5/36; C08K5/43
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
17 words
A SULFUR VULCANIZABLE DIENE POLYMER HAVING INCORPORATED THEREIN AT LEAST ONE COMPOUND HAVING THE FOLLOWING STRUCTURAL FORMULA
Claim 2
Dependent Claim
17 words
A SULFUR VULCANIZABLE DIENE POLYMER HAVING INCORPORATED THEREIN AT LEAST ONE COMPOUND HAVING THE FOLLOWING STRUCTURAL FORMULA
Claim 3
Dependent Claim
14 words
The sulfur vulcanizable diene polymer according to claim 1 wherein the sulfonamide is N-methyl-N-(morpholinothio)-p-toluene-sulfonamide.
Claim 4
Dependent Claim
19 words
The sulfur vulcanizable diene polymer according to claim 1 wherein the polymer has incorporated therein an organic accelerating agent.
Claim 5
Dependent Claim
19 words
The sulfur vulcanizable diene polymer according to claim 1 wherein the polymer has incorporated therein a sulfur vulcanizing agent.
Claim 6
Dependent Claim
26 words
The sulfur vulcanizable diene polymer according to claim 3 wherein the organic accelerating agent is a primary accelerator and the polymer has incorporated therein elemental sulfur.
Claim 7
Dependent Claim
33 words
The sulfur vulcanizable diene polymer according to claim 1 wherein the sulfonamide is present in the amount of from 0.25 part to 5.0 parts by weight per 100 parts by weight of polymer.
Claim 8
Dependent Claim
57 words
The sulfur vulcanizable diene polymer according to claim 1 wherein R is selected from the group consisting of methyl, ethyl, 2-propyl, n-butyl, n-propyl, phenyl, p-tolyl, p-chlorophenyl, dimethylamino, morpholino, piperidino, p-methoxyphenyl, p-nitrophenyl and cyclohexyl, wherein R1 is selected from the group consisting of methyl, ethyl, 2-propyl, t-butyl, n-butyl, n-propyl, phenyl, p-tolyl, p-chlorophenyl, cyclohexyl, p-methoxyphenyl and p-nitrophenyl and wherein
Claim 9
Dependent Claim
23 words
The sulfur vulcanizable diene polymer according to claim 1 wherein the sulfonamide is selected from the group consisting of N-methyl-N-(piperidinothio)-toluenesulfonamide, N-methyl-N-(morpholinothio)-p-toluenesulfonamide, and N-methyl-N-(morpholinothio)-methanesulfonamide.
References Cited (Backward Citations)
US3678017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |