US2913425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of synthetic resins
Assignee: Bayer AG
•
Filing: 1954-06-08
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Granted: 1959-11-17
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Expires: 1974-06-08
Abstract
No abstract record available.
Inventors
- 👤 Karl E Muller
- 👤 Hoppe Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:53
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1841
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
IN A PROCESS FOR THE PREPARATION OF A FOAMED POLYURETHANE BY THE REACTION BETWEEN AN ORGANIC DISOCYANATE, A POLYESTER OF A POLYCARBOXYLIC ACID AND A POLYHYDRIC ALCOHOL, AND WATER, THE IMPROVEMENT COMPRISING CONDUCTING SAID REACTION IN THE PRESENCE OF A CATALYSTOC AMOUNT OF AN ESTER AMINE PREPARED FROM N-DIETHYL ETHANOLAMINE AND ADIPIC ACID, SAID ESTER AMINE BEING READILY EMULSIFIABLE IN WATER AND THE RESULTING FOAMED PRODUCT BEING ODORLESS.
Claim 2
Dependent Claim
68 words
IN A PROCESS FOR THE PREPARATION OF A FOAMED POLYURETHANE BY THE REACTION BETWEEN AN ORGANIC DISOCYANATE, A POLYESTER OF A POLYCARBOXYLIC ACID AND A POLYHYDRIC ALCOHOL, AND WATER, THE IMPROVEMENT COMPRISING CONDUCTING SAID REACTION IN THE PRESENCE OF A CATALYSTOC AMOUNT OF AN ESTER AMINE PREPARED FROM N-DIETHYL ETHANOLAMINE AND ADIPIC ACID, SAID ESTER AMINE BEING READILY EMULSIFIABLE IN WATER AND THE RESULTING FOAMED PRODUCT BEING ODORLESS.
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) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |