Patent US3053824A successfully refreshed from Google Patents.
US3053824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coagulation of latices of natural and synthetic rubbers
Assignee: Bayer AG
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Filing: 1959-11-03
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Granted: 1962-09-11
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Expires: 1979-11-03
Abstract
No abstract record available.
Inventors
- 👤 Anton R Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:53
CPC Classifications
C; C08; C08C; C08C1/00; C08C1/14; C08C1/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
200 words
A METHOD OF COAGULATING A POLYCHLOROPRENE LATEX WHICH COMPRISES MIXING A POLYCHLOROPRENE LATEX CONTAINING 0.05 TO 1% BY WEIGHT OF A BUFFERING AGENT SELECTED FROM THE GROUP CONSISTING OF WATER-SOLUBLE PHOSPHATES AND BORATES WITH AN AQUEOUS SOLUTION CONTAINING THEREIN ABOUT 0.02 TO 2% OF A SALT SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND TITANIUM SALTS, IN COMBINATION WITH A MEMBER OF THE GROUP CONSISTING OF ABOUT 5 TO 40% OF A WATERSOLUBLE ALKALI METAL SALT AND ABOUT 0.04 TO 4% OF A WATERSOLUBLE ALKALINE EARTH METAL SALT, THE CATIONS OF WHICH ARE NOT PRECIPITATED BY THE ANIONS OF SIAD ALUMINUM AND TITANIUM SALTS AND THE ANIONS OF WHICH DO NOT PRECIPITATE THE CATIONS OF SAID ALUMINUM AND TITANIUM SALTS, SAID AQUEOUS SOLUTION BEING APPLIED IN SUCH AMOUNT, THAT THE SALTS ARE PRESENT IN AMOUNTS OF (A) 0.05 TO 5% OF ALUMINUM AND TITANIUM SALT, (B) 0.1 TO 10% OF ALKALINE EARTH METAL SALT, AND (C) 5 TO 100% OF ALKALI METAL SALT, SAID PERCENTAGES BEING BASED ON THE WEIGHT OF POLYCHLOROPRENE LATEX EMPLOYED, SAID AQUEOUS SOLUTION HAVING A PH VALUE OF ABOUT 1.5 TO 4.5 TO PRODUCE A COAGULATE IN THE FORM OF DISCRETE PARTICLES, AND ISOLATING SAID COAGULATE.
Claim 2
Independent Claim
200 words
A METHOD OF COAGULATING A POLYCHLOROPRENE LATEX WHICH COMPRISES MIXING A POLYCHLOROPRENE LATEX CONTAINING 0.05 TO 1% BY WEIGHT OF A BUFFERING AGENT SELECTED FROM THE GROUP CONSISTING OF WATER-SOLUBLE PHOSPHATES AND BORATES WITH AN AQUEOUS SOLUTION CONTAINING THEREIN ABOUT 0.02 TO 2% OF A SALT SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND TITANIUM SALTS, IN COMBINATION WITH A MEMBER OF THE GROUP CONSISTING OF ABOUT 5 TO 40% OF A WATERSOLUBLE ALKALI METAL SALT AND ABOUT 0.04 TO 4% OF A WATERSOLUBLE ALKALINE EARTH METAL SALT, THE CATIONS OF WHICH ARE NOT PRECIPITATED BY THE ANIONS OF SIAD ALUMINUM AND TITANIUM SALTS AND THE ANIONS OF WHICH DO NOT PRECIPITATE THE CATIONS OF SAID ALUMINUM AND TITANIUM SALTS, SAID AQUEOUS SOLUTION BEING APPLIED IN SUCH AMOUNT, THAT THE SALTS ARE PRESENT IN AMOUNTS OF (A) 0.05 TO 5% OF ALUMINUM AND TITANIUM SALT, (B) 0.1 TO 10% OF ALKALINE EARTH METAL SALT, AND (C) 5 TO 100% OF ALKALI METAL SALT, SAID PERCENTAGES BEING BASED ON THE WEIGHT OF POLYCHLOROPRENE LATEX EMPLOYED, SAID AQUEOUS SOLUTION HAVING A PH VALUE OF ABOUT 1.5 TO 4.5 TO PRODUCE A COAGULATE IN THE FORM OF DISCRETE PARTICLES, AND ISOLATING SAID COAGULATE.
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) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |