US3100759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of preparing elastomers of the polyurethane type
Assignee: Compagnie Generale des Etablissements Michelin SCA
•
Filing: 1960-06-23
•
Granted: 1963-08-13
•
Expires: 1980-06-23
Abstract
No abstract record available.
Inventors
- 👤 Boussu Gabriel Xavier Roger
- 👤 Neuville Louis Pierre Fr Andre
- 👤 Massoubre Jean-Marie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:18
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/671; C08G18/6715; C08G18/08; C08G18/16; C08G18/22; C08G18/222; Y; Y10; Y10S; Y10S525/00; Y10S525/92; Y10S528/00; Y10S528/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
THE PROCESS FOR THE PREPRATION OF A STABLE DI-TERMINALLY UNSATURATED BRANCHED CHAIN POLYURETHANE ELASTOMER WHICH COMPRISES THE STEPS OF (1) MIXING AND HEATING AT A TEMPERATURE FROM ABOUT 70*C. TO ABOUT 90*C. FOR FROM ABOUT 10 TO ABOUT 60 MINUTES (A) A SATURATED POLYMERIC DIHYDROXY COMPOUND HAVING A MOLECULAR WEIGHT OF 750 TO 10,000 AN ORGANIC DIISOCYANATE, AND (C) A SATURATED BIFUNCTIONAL COMPOUND HAVING A MOLECULAR WEIGHT BELOW ABOUT 250 SELECTED FROM THE GROUP CONSISTING OF WATER,DIOLSS, DIAMINES, AMINO-ALCOHOLS AND DICARBOXYLIC ACIDS THEREBY FORMING A HOMOGENIZED LIQUID MIXTURE OF (A), (B) AND (C) AND FURTHER HEATING SAID HOMOGENIZED LIQUID MIXTURE AT A TEMPERATURE OF ABOUT 120*C. FOR FROM ABOUT 5 TO ABOUT 10 HOURS THEREBY FORMING (D) A BRANCHED CHAIN POLYURETHANE ELASTOMER HAVING FROM 1 TO 17 BRANCHED CHAINS AND HAVING AT SUBSTANTIALLY ALL TERMINAL PORTIONS THEREOF FREE ISOCYANATE GROUP, AND (2) REACTING BY THOROUGHLY MIXING AT A TEMPERATURE FROM ABOUT 50*C. TO ABOUT 60*C. SAID (D) BRANCHED CHAIN POLYURETHANE ELASTOMER WITH AN EQUIVAALENT AMOUNT OF (E) A DI-ETHYLENICALLY UNSATURATED COMPOUND WHICH IS MONOFUNCTIONAL WITH RESPECT TO ISOCYANATE HAVING THE FORMULA
Claim 2
Dependent Claim
181 words
THE PROCESS FOR THE PREPRATION OF A STABLE DI-TERMINALLY UNSATURATED BRANCHED CHAIN POLYURETHANE ELASTOMER WHICH COMPRISES THE STEPS OF (1) MIXING AND HEATING AT A TEMPERATURE FROM ABOUT 70*C. TO ABOUT 90*C. FOR FROM ABOUT 10 TO ABOUT 60 MINUTES (A) A SATURATED POLYMERIC DIHYDROXY COMPOUND HAVING A MOLECULAR WEIGHT OF 750 TO 10,000 AN ORGANIC DIISOCYANATE, AND (C) A SATURATED BIFUNCTIONAL COMPOUND HAVING A MOLECULAR WEIGHT BELOW ABOUT 250 SELECTED FROM THE GROUP CONSISTING OF WATER,DIOLSS, DIAMINES, AMINO-ALCOHOLS AND DICARBOXYLIC ACIDS THEREBY FORMING A HOMOGENIZED LIQUID MIXTURE OF (A), (B) AND (C) AND FURTHER HEATING SAID HOMOGENIZED LIQUID MIXTURE AT A TEMPERATURE OF ABOUT 120*C. FOR FROM ABOUT 5 TO ABOUT 10 HOURS THEREBY FORMING (D) A BRANCHED CHAIN POLYURETHANE ELASTOMER HAVING FROM 1 TO 17 BRANCHED CHAINS AND HAVING AT SUBSTANTIALLY ALL TERMINAL PORTIONS THEREOF FREE ISOCYANATE GROUP, AND (2) REACTING BY THOROUGHLY MIXING AT A TEMPERATURE FROM ABOUT 50*C. TO ABOUT 60*C. SAID (D) BRANCHED CHAIN POLYURETHANE ELASTOMER WITH AN EQUIVAALENT AMOUNT OF (E) A DI-ETHYLENICALLY UNSATURATED COMPOUND WHICH IS MONOFUNCTIONAL WITH RESPECT TO ISOCYANATE HAVING THE FORMULA
References Cited (Backward Citations)
US2820020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-12 | 1967-02-11 | 1967-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-12 | 1971-02-11 | 1971-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-12 | 1975-02-11 | 1975-08-13 | $7700.00 | Window Closed / Lapsed |