US3219633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear polyurethane elastomers
Assignee: Compagnie Generale des Etablissements Michelin SCA
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Filing: 1962-07-10
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Granted: 1965-11-23
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Expires: 1982-07-10
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
2026-10-24 00:20
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
112 words
THE PROCESS FOR THE PREPARATION OF A STABLE DI-TERMINALLY UNSATURATED LINEAR 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 30 MINUTES (A) N MOLES OF A SATURATED POLYMERIC DIHYDROXY COMPOUND HAVING A MOLECULAR WEIGHT OF 750 TO 10,000 SELECTED FROM THE GROUP CONSISTING OF POLYESTERS, POLYETHERES, POLYAMIDES, POLYESTER-ETHERS AND POLYESTERAMIDES HAVIN AS SOLE REACTIVE GROUPS TWO TERMINAL HYDROXY GROUPS, (B) N+1 MOLES OF AN ORGANIC DIISOCYANATE WHOSE SOLE REACTIVE GROUPS ARE TWO ISOCYANATE GROUPS, AND (C) 2 MOLES OF A DI-ETHYLENICALLY UNSATURATED MONOHYDRIC ALCOHOL WHICH IS MONOFUNCTIONAL WITH RESPECT TO ISOCYANATES; HAVING THE FORMULA
Claim 2
Dependent Claim
112 words
THE PROCESS FOR THE PREPARATION OF A STABLE DI-TERMINALLY UNSATURATED LINEAR 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 30 MINUTES (A) N MOLES OF A SATURATED POLYMERIC DIHYDROXY COMPOUND HAVING A MOLECULAR WEIGHT OF 750 TO 10,000 SELECTED FROM THE GROUP CONSISTING OF POLYESTERS, POLYETHERES, POLYAMIDES, POLYESTER-ETHERS AND POLYESTERAMIDES HAVIN AS SOLE REACTIVE GROUPS TWO TERMINAL HYDROXY GROUPS, (B) N+1 MOLES OF AN ORGANIC DIISOCYANATE WHOSE SOLE REACTIVE GROUPS ARE TWO ISOCYANATE GROUPS, AND (C) 2 MOLES OF A DI-ETHYLENICALLY UNSATURATED MONOHYDRIC ALCOHOL WHICH IS MONOFUNCTIONAL WITH RESPECT TO ISOCYANATES; HAVING THE FORMULA
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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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |