US3919132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accelerator combinations comprising thioperoxydiphosphate and bis (triazinyl) disulfides
Assignee: Monsanto Co
•
Filing: 1973-12-03
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Granted: 1975-11-11
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Expires: 1993-12-03
Abstract
Abstract Vulcanizable compositions and processes for vulcanizing rubber are disclosed comprising accelerator systems comprising mixtures of thioperoxydiphosphate and bis(triazinyl)disulfides.
Inventors
- 👤 Jr Chester D Trivette
- 👤 John P Vanderkooi
- 👤 Ralph A Genetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:55
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/378; C08K5/49; C08K5/51; C08K5/5398; C08L; C08L21/00; C08L7/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
33 words
SULFUR VULCANIZABLE DIENE RUBBER COMPOSITION THE MAJOR PROPORTION OF THE RUBBER BEING NATURAL RUBBER HAVING INCORPORATED THEREIN SULFUR AND AN ACCELERATING AMOUNT OF A SYNERGISTIC ACCELERATOR COMBINATION OF THIOPEROXYDIPHOSPHATE ACCELERATOR OF THE FORMULA
Claim 2
Dependent Claim
33 words
SULFUR VULCANIZABLE DIENE RUBBER COMPOSITION THE MAJOR PROPORTION OF THE RUBBER BEING NATURAL RUBBER HAVING INCORPORATED THEREIN SULFUR AND AN ACCELERATING AMOUNT OF A SYNERGISTIC ACCELERATOR COMBINATION OF THIOPEROXYDIPHOSPHATE ACCELERATOR OF THE FORMULA
Claim 3
Dependent Claim
45 words
The composition of claim 1 in which the accelerator combination is in the amount of about 0.5-2.0 parts by weight per 100 parts by weight rubber and the amount of each thioperoxydiphosphate and bis (diamino-s-triazinyl)disulfide is between about 30-70 parts per 100 parts accelerator combination.
Claim 4
Dependent Claim
23 words
The composition of claim 2 in which R1 and R3 are hydrogen or lower alkyl and R, R2 and R4 are lower alkyl.
Claim 5
Dependent Claim
20 words
The composition of claim 3 in which each R is isopropyl, R1 is hydrogen and R2R3 and R4 are ethyl.
Claim 6
Dependent Claim
41 words
A process for vulcanizing rubber which comprises incorporating into sulfur vulcanizable diene rubber composition the major proportion of the rubber being natural rubber, sulfur and, in amount effective to accelerate vulcanization, a synergistic accelerator combination of thioperoxydiphosphate accelerator of the formula
Claim 7
Dependent Claim
41 words
A process for vulcanizing rubber which comprises incorporating into sulfur vulcanizable diene rubber composition the major proportion of the rubber being natural rubber, sulfur and, in amount effective to accelerate vulcanization, a synergistic accelerator combination of thioperoxydiphosphate accelerator of the formula
Claim 8
Dependent Claim
46 words
The process of claim 5 in which the accelerator combination is incorporated in the amount of about 0.5-2.0 parts by weight per 100 parts by weight rubber and the amount of each thioperoxydiphosphate and bis (diamino-s-triazinyl)disulfide is between about 30-70 parts per 100 parts accelerator combination.
Claim 9
Dependent Claim
23 words
The process of claim 6 in which R1 and R3 are hydrogen or lower alkyl and R, R2 and R4 are lower alkyl.
Claim 10
Dependent Claim
21 words
The process of claim 7 in which each R is isopropyl, R1 is hydrogen and R2, R3 and R4 are ethyl.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |