Patent US2662874A successfully refreshed from Google Patents.
US2662874A
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Preparation of plastic condensable synthetic rubbers and subsequent elasto-condensation thereof
Assignee: Goodrich Corp
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Filing: 1950-11-01
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Granted: 1953-12-15
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Expires: 1970-11-01
Abstract
No abstract record available.
Inventors
- 👤 Harold P Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:34
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/36; Y; Y10; Y10S; Y10S526/00; Y10S526/914
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
THE METHOD WHICH COMPRISES REACTING 100 PARTS BY WEIGHT OF A PLASTIC SYNTHETIC RUBBERY MATERIAL COMPRISING A POLYMER OF AN OPEN-CHAIN ALIPHATIC CONJUGATED DIENE WITH AN AMOUNT OF A CARBOXYLATING AGENT CHEMICALLY EQUIVLENT TO 1 TO 3 TIMES THE CARBOXYL CONTENT IN THE PRESENCE OF 0.5 TO 10 PARTS BY WEIGHT OF A PEROXYGEN COMPOUND SO AS TO INTRODUCE INTO SAID RUBBERY MATERIAL FROM 0.001 TO 0.30 CHEMICAL EQUIVALENTS OF COMBINED -COOH PER 100 PARTS BY WEIGHT OF RUBBER, ADMIXING THE RESULTANT PLASTIC, CARBOXYLCONTAINING RUBBERY MATERIAL WITH AN AMOUNT OF A POLYVALENT METAL OXIDE CHEMICALLY EQUIVALENT TO AT LEAST ONE-HALF SAID COMBINED -COOH AND FORMING AN INTIMATE MIXTURE THEREOF, AND HEATING THE RESULTANT PLASTIC COMPOSITION AT A TEMPERATURE OF FROM 125 TO 400* F. UNTIL SAID PLASTIC COMPOSITION HAS BEEN CONVERTED TO AN ESSENTIALLY ELASTIC, POLYMERIC METALLO-CARBOXYLATE BY A SALT FORMATION OCCURRING BETWEEN THE METALLIC CATION OF SAID POLYVALENT METAL OXIDE AND THE COMBINED CARBOXYL GROUPS OF THE PLASTIC RUBBERY MATERIAL.
Claim 2
Independent Claim
161 words
THE METHOD WHICH COMPRISES REACTING 100 PARTS BY WEIGHT OF A PLASTIC SYNTHETIC RUBBERY MATERIAL COMPRISING A POLYMER OF AN OPEN-CHAIN ALIPHATIC CONJUGATED DIENE WITH AN AMOUNT OF A CARBOXYLATING AGENT CHEMICALLY EQUIVLENT TO 1 TO 3 TIMES THE CARBOXYL CONTENT IN THE PRESENCE OF 0.5 TO 10 PARTS BY WEIGHT OF A PEROXYGEN COMPOUND SO AS TO INTRODUCE INTO SAID RUBBERY MATERIAL FROM 0.001 TO 0.30 CHEMICAL EQUIVALENTS OF COMBINED -COOH PER 100 PARTS BY WEIGHT OF RUBBER, ADMIXING THE RESULTANT PLASTIC, CARBOXYLCONTAINING RUBBERY MATERIAL WITH AN AMOUNT OF A POLYVALENT METAL OXIDE CHEMICALLY EQUIVALENT TO AT LEAST ONE-HALF SAID COMBINED -COOH AND FORMING AN INTIMATE MIXTURE THEREOF, AND HEATING THE RESULTANT PLASTIC COMPOSITION AT A TEMPERATURE OF FROM 125 TO 400* F. UNTIL SAID PLASTIC COMPOSITION HAS BEEN CONVERTED TO AN ESSENTIALLY ELASTIC, POLYMERIC METALLO-CARBOXYLATE BY A SALT FORMATION OCCURRING BETWEEN THE METALLIC CATION OF SAID POLYVALENT METAL OXIDE AND THE COMBINED CARBOXYL GROUPS OF THE PLASTIC RUBBERY MATERIAL.
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) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |