Patent US2888443A successfully refreshed from Google Patents.
US2888443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the production of dry agglomerated rubber accelerators and product produced thereby
Assignee: Goodyear Tire and Rubber Co
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Filing: 1955-09-23
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Granted: 1959-05-26
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Expires: 1975-09-23
Abstract
No abstract record available.
Inventors
- 👤 Donald W Hayes
- 👤 Harold P Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:44
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/22; C08J3/226; C08J2321/00; C08J2421/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A METHOD FOR PREPARING AN AGGLOMERATED COMPOUNDING INGREDIENT FOR RUBBER WHICH COMPRISES MIXING AN AQUEOUS SLURRY OF AT LEAST ONE POWERED VULCANIZATION ACCELERATOR SELECTED FROM THE GROUP CONSISTING OF TETRAMTHYL THIURAM DISULFIDE, TETRAETHYL THIURAN DISULFIDE, TETRAMETHYL THIURAM MONOSULFIDE, ZINC DIMETHYL DITHIOCARBAMATE, ZINC DIETHYL DITHIOCARBAMATE, ZINC DIBUTYL DITHIOCARBAMATE, MERCAPTOBENZOTHIAZOLE, WATER INSOLUBLE METALLIC SALTS OF MERCAPTOBENZOTHIAZOLE, AND BENZOTHIAZYL DISULFIDE WITH A LATEX STABILIZED AGAINST COAGULATION BY AT LEAST ONE ACIDSTABLE EMULSIFER AND A RUBBER ANTIOXIDANT, SAID LATEX BEING SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER LATEX POLYCHLOROPRENE LATEX, POLYBUTADIENE LATEX, THE LATICES OF THE RUBBERY COPOLYMERS OF BUTADIENE AND STYRENE AND THE LATICES OF THE RUBBERY COPOLYMERS OF BUTADIENCE AND ACRYLONITRILE, THE MIXTURE CONTAINING FROM 4 TO 10% RUBBER HYDROCARBON BY WEIGHT OF SAID ACCELERATOR, COAGULATING THE RUBBER LATEX, REMOVING THE EXCESS WATAER, FORMING AGGLOMERATES OF THE MIXTURE, DRYING THE AGGLOMERATES TO REMOVE REMAINING WATER AND COLLECTING THE DRIED AGGLOMERATES.
Claim 2
Independent Claim
149 words
A METHOD FOR PREPARING AN AGGLOMERATED COMPOUNDING INGREDIENT FOR RUBBER WHICH COMPRISES MIXING AN AQUEOUS SLURRY OF AT LEAST ONE POWERED VULCANIZATION ACCELERATOR SELECTED FROM THE GROUP CONSISTING OF TETRAMTHYL THIURAM DISULFIDE, TETRAETHYL THIURAN DISULFIDE, TETRAMETHYL THIURAM MONOSULFIDE, ZINC DIMETHYL DITHIOCARBAMATE, ZINC DIETHYL DITHIOCARBAMATE, ZINC DIBUTYL DITHIOCARBAMATE, MERCAPTOBENZOTHIAZOLE, WATER INSOLUBLE METALLIC SALTS OF MERCAPTOBENZOTHIAZOLE, AND BENZOTHIAZYL DISULFIDE WITH A LATEX STABILIZED AGAINST COAGULATION BY AT LEAST ONE ACIDSTABLE EMULSIFER AND A RUBBER ANTIOXIDANT, SAID LATEX BEING SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER LATEX POLYCHLOROPRENE LATEX, POLYBUTADIENE LATEX, THE LATICES OF THE RUBBERY COPOLYMERS OF BUTADIENE AND STYRENE AND THE LATICES OF THE RUBBERY COPOLYMERS OF BUTADIENCE AND ACRYLONITRILE, THE MIXTURE CONTAINING FROM 4 TO 10% RUBBER HYDROCARBON BY WEIGHT OF SAID ACCELERATOR, COAGULATING THE RUBBER LATEX, REMOVING THE EXCESS WATAER, FORMING AGGLOMERATES OF THE MIXTURE, DRYING THE AGGLOMERATES TO REMOVE REMAINING WATER AND COLLECTING THE DRIED AGGLOMERATES.
References Cited (Backward Citations)
US2565998A
Cited
US2640088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |