US2879243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compounding of rubber latex with a thiazole accelerator and an alkali dialkyl dithiophosphate and resulting composition
Assignee: Uniroyal Inc
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Filing: 1957-04-18
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Granted: 1959-03-24
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Expires: 1977-04-18
Abstract
No abstract record available.
Inventors
- 👤 Everett V Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:48
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/45; C08K5/46; C08K5/47; C08K5/49; C08K5/5398
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A RUBBER LATEX CONTAINING 0.5 TO 5 PARTS OF SULFUR, 0.25 TO 4 PARTS OF ZINC OXIDE, AND 0.25 TO 5 PARTS OF A MIXTURE OF A THIAZOLE ACCELERATOR AND AN ALKALI DIALKYL DITHIOPHOSPHATE, PER 100 PARTS OF RUBBER SOLIDS OF THE LATEX, THE MOLAR RATIO OF THIAZOLE ACCELERATOR TO ALKALI DIALKYL DITHIOPHOSPHATE BEING IN THE RANGE FROM 3:1 TO 1:3, THE RUBBER LATEX BEING SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER LATEX AND BUTADIENE POLYMER SYNTHETIC RUBBER LATICES, THE THIAZOLE ACCELERATOR BEING SELECTED FROM THE GROUP CONSISTING OF 2-MERCAPTOBENZOTHIAZOLE, SALTS OF 2-MERCAPTOBENZOTHIAZOLE AND BENZOTHIAZYLDISULFIDE, AND THE ALKALI DIALKYL DITHIOPHOSPHATE BEING SELECTED FROM THE GROUP CONSISTING OF POTASSIUM, SODIUM AND AMMONIUM DIALKYL DITHIOPHOSPHATES IN WHICH EACH ALKYL GROUP CONTAINS 2 TO 4 CARBON ATOMS.
Claim 2
Dependent Claim
125 words
A RUBBER LATEX CONTAINING 0.5 TO 5 PARTS OF SULFUR, 0.25 TO 4 PARTS OF ZINC OXIDE, AND 0.25 TO 5 PARTS OF A MIXTURE OF A THIAZOLE ACCELERATOR AND AN ALKALI DIALKYL DITHIOPHOSPHATE, PER 100 PARTS OF RUBBER SOLIDS OF THE LATEX, THE MOLAR RATIO OF THIAZOLE ACCELERATOR TO ALKALI DIALKYL DITHIOPHOSPHATE BEING IN THE RANGE FROM 3:1 TO 1:3, THE RUBBER LATEX BEING SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER LATEX AND BUTADIENE POLYMER SYNTHETIC RUBBER LATICES, THE THIAZOLE ACCELERATOR BEING SELECTED FROM THE GROUP CONSISTING OF 2-MERCAPTOBENZOTHIAZOLE, SALTS OF 2-MERCAPTOBENZOTHIAZOLE AND BENZOTHIAZYLDISULFIDE, AND THE ALKALI DIALKYL DITHIOPHOSPHATE BEING SELECTED FROM THE GROUP CONSISTING OF POTASSIUM, SODIUM AND AMMONIUM DIALKYL DITHIOPHOSPHATES IN WHICH EACH ALKYL GROUP CONTAINS 2 TO 4 CARBON ATOMS.
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) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |