US3274134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Very soft urethane vulcanizates which comprise a fully saturated urethane prepolymer and an organotin compound
Assignee: Individual
•
Filing: 1961-09-14
•
Granted: 1966-09-20
•
Expires: 1981-09-14
Abstract
No abstract record available.
Inventors
- 👤 Ramos Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:31
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/16; C08G18/22; C08G18/24; C08G18/244; C08G18/28; C08G18/40; C08G18/48; C08G18/4854; C08K; C08K5/00; C08K5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A SOFT POLYURETHANE VULCANIZATE, WHICH COMPRISES A MIXTURE, IN THE PROPIRTIONS IN PARTS BY WEIGHT, OF (A) 100 PARTS OF A PREFORMED FULLY SATURATED URETHANE POLYMER WHICH IS THE REACTION PRODUCT OF POLY (1,4OXYBUTYLENE) GLYCOL AND TOLYLENE DISOCYANATE OF APPROXIMATELY 2000 MOLECULAR WEIGHT AND CONTAINING ABOUT 4.0 TO 4.3 PERCENT BY WEIGHT OF ISOCYANATE GROUPS, (B) FROM ABOUT 5 TO 55 PARTS OF A CHLORINATED PARAFFIN, (C) ABOUT 20 TO 55 PARTS OF A POLYOL HAVNG A MOLECULAR WEIGHT AT LEAST ABOUT AS HIGH AS THAT OF CASTOR OIL, AND (D) ABOUT 10 TO 30 PARTS OF AN ORGANOTIN COMPOUND SELECTED FROM THE GROUP CONSISTING DIBUTYLTIN DILAURATE, DIBUTYLTIN DI-2 ETHYL HEXOATE, STANNOUS 2-ETHYL HEXOATE AND STANNOUS OCTATE.
Claim 2
Dependent Claim
117 words
A SOFT POLYURETHANE VULCANIZATE, WHICH COMPRISES A MIXTURE, IN THE PROPIRTIONS IN PARTS BY WEIGHT, OF (A) 100 PARTS OF A PREFORMED FULLY SATURATED URETHANE POLYMER WHICH IS THE REACTION PRODUCT OF POLY (1,4OXYBUTYLENE) GLYCOL AND TOLYLENE DISOCYANATE OF APPROXIMATELY 2000 MOLECULAR WEIGHT AND CONTAINING ABOUT 4.0 TO 4.3 PERCENT BY WEIGHT OF ISOCYANATE GROUPS, (B) FROM ABOUT 5 TO 55 PARTS OF A CHLORINATED PARAFFIN, (C) ABOUT 20 TO 55 PARTS OF A POLYOL HAVNG A MOLECULAR WEIGHT AT LEAST ABOUT AS HIGH AS THAT OF CASTOR OIL, AND (D) ABOUT 10 TO 30 PARTS OF AN ORGANOTIN COMPOUND SELECTED FROM THE GROUP CONSISTING DIBUTYLTIN DILAURATE, DIBUTYLTIN DI-2 ETHYL HEXOATE, STANNOUS 2-ETHYL HEXOATE AND STANNOUS OCTATE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |