Patent US2906718A successfully refreshed from Google Patents.
US2906718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition comprising a rubber, lignin and polyisocyanate and method of preparing same
Assignee: Uniroyal Inc
•
Filing: 1956-04-17
•
Granted: 1959-09-29
•
Expires: 1976-04-17
Abstract
No abstract record available.
Inventors
- 👤 George S Mills
- 👤 Jr Henry E Haxo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:49
CPC Classifications
C; C08; C08L; C08L9/00; C08L9/06; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/69; C08G18/698; C08L21/00; C08K; C08K5/00; C08K5/16; C08K5/29; C08L97/00; C08L97/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
THE METHOD WHICH COMPRISES INCORPORATING AN ORGANIC POLYISOCYANATE IN A DRY LINGIN-RUBBER CO-COAGULUM OF A MIXTURE OF A RUBBER LATEX AND AN ALKALINE AQUEOUS SOLUTION OF LIGNIN, THE LIGNIN BEING IN QUYANTITY NOT MORE THAN 100 PARTS PER 100 PARTS OF RUBBER IN THE LIGNIN RUBBER CO-COAGULUM, AND THE POLYISOCYANATE BEING IN QUANTITY NOT MORE THAN 10 PARTS PER 100 PARTS OF SAID RUBBER, SAID RUBBER BEING SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER AND SYNTHETIC RUBBER POLYMERS OF MATERIAL SELECTED FROM THE GROUP CONSISTING OF BUTADIENES-1,3 AND MIXTURES OF BUTASDIENES-1,3 WITH COMPOUNDS WHICH CONTAIN A CH2=C< GROUP AND ARE COPOLYMERIZABLE WITH BUTADIENES-1,3.
Claim 2
Independent Claim
104 words
THE METHOD WHICH COMPRISES INCORPORATING AN ORGANIC POLYISOCYANATE IN A DRY LINGIN-RUBBER CO-COAGULUM OF A MIXTURE OF A RUBBER LATEX AND AN ALKALINE AQUEOUS SOLUTION OF LIGNIN, THE LIGNIN BEING IN QUYANTITY NOT MORE THAN 100 PARTS PER 100 PARTS OF RUBBER IN THE LIGNIN RUBBER CO-COAGULUM, AND THE POLYISOCYANATE BEING IN QUANTITY NOT MORE THAN 10 PARTS PER 100 PARTS OF SAID RUBBER, SAID RUBBER BEING SELECTED FROM THE GROUP CONSISTING OF NATURAL RUBBER AND SYNTHETIC RUBBER POLYMERS OF MATERIAL SELECTED FROM THE GROUP CONSISTING OF BUTADIENES-1,3 AND MIXTURES OF BUTASDIENES-1,3 WITH COMPOUNDS WHICH CONTAIN A CH2=C< GROUP AND ARE COPOLYMERIZABLE WITH BUTADIENES-1,3.
References Cited (Backward Citations)
US2436222A
Cited
US2608537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |