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US2938005A
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Preparation of cellular polyurethane resins using sulfated compounds as emulsifiers
Assignee: Bayer Corp
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Filing: 1954-08-16
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Granted: 1960-05-24
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Expires: 1974-08-16
Abstract
No abstract record available.
Inventors
- 👤 Bick Rudolf
- 👤 Brochhagen Franzkarl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:49
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0033; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN A PROCESS FOR MAKING FOAMS BY REACTING AN ORGANIC POLYISOCYANATE, WATER, AND AN ORGANIC POLYESTER HAVING TERMINAL HYDROXYL GROUPS, SAID POLYESTER BEING AN ESTERIFICATION PRODUCT OF A POLYHYDRIC ALCOHOL AND A POLYCARBOXYLIC ACID, THE IMPROVEMENT COMPRISING CONDUCTING SAID FOAMING PROCESS IN THE PRESENCE OF ABOUT 1% BY WEIGHT, BASED ON THE WEIGHT OF THE POLYESTER, OF AN ANIONIC EMULSIFIER SELECTED FROM THE GROUP CONSISTING OF AN ALKALI METAL SALT OF A SULFATED FATTY ACID CONTAINING A CARBON CHAIN OF AT LEAST 10 CARBON ATOMS AND AN ALKALI METAL SALT OF THE SULFATED GLYCERIDE OF A FATTY ACID CONTAINING A CARBON CHAIN OF AT LEAST 10 CARBON ATOMS.
Claim 2
Dependent Claim
108 words
IN A PROCESS FOR MAKING FOAMS BY REACTING AN ORGANIC POLYISOCYANATE, WATER, AND AN ORGANIC POLYESTER HAVING TERMINAL HYDROXYL GROUPS, SAID POLYESTER BEING AN ESTERIFICATION PRODUCT OF A POLYHYDRIC ALCOHOL AND A POLYCARBOXYLIC ACID, THE IMPROVEMENT COMPRISING CONDUCTING SAID FOAMING PROCESS IN THE PRESENCE OF ABOUT 1% BY WEIGHT, BASED ON THE WEIGHT OF THE POLYESTER, OF AN ANIONIC EMULSIFIER SELECTED FROM THE GROUP CONSISTING OF AN ALKALI METAL SALT OF A SULFATED FATTY ACID CONTAINING A CARBON CHAIN OF AT LEAST 10 CARBON ATOMS AND AN ALKALI METAL SALT OF THE SULFATED GLYCERIDE OF A FATTY ACID CONTAINING A CARBON CHAIN OF AT LEAST 10 CARBON ATOMS.
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) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |