Patent US3145185A successfully refreshed from Google Patents.
US3145185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular polyurethane materials and process for preparing same
Assignee: EIDP Inc
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Filing: 1958-07-07
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Granted: 1964-08-18
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Expires: 1978-07-07
Abstract
No abstract record available.
Inventors
- 👤 Ward J Remington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:40
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08J2375/00; C08J2375/04; C08J2483/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
IN THE PROCESS FOR THE FORMATION OIF A CELLULAR MATERIAL FROM THE REACTION OF WATER WITH A WATER-FOAMABLE POLYISOCYANATE POLYURETHANE COMPOSITION HAVING A FREE ISOCYANATO CONTENT OF FROM ABOUT 3.0 TO 25.0% BY WEIGHT, SAID POLYURETHANE COMPOSITION BEING OBTAINED BY REACTING AN ORGANIC POLYISOCYANATE WITH AN ORGANIC COMPOUND CONTAINING A PLURALITY OF ALCOHOLIC HYDROXYLK GROUPS WITH THE PROPORTIONS OF REACTANTS BEING SUCH THAT THE RATIO OF THE NUMBER OF FREE ISOCYANATO GROUPS TO THE NUMBER OF ALCOHOLIC HYDROXYL GROUPS IS GREATER THAN ONE, SAID ORGANIC COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF POLYALKYLENEETHER GLYXOLS, POLYALKYLENEETHER - THIOETHER GLYCOLS, POLYALKYLENE - ARYLENEETHER GLYCOLS, POLYALKYLENEARYLENEETHER-THIOEHTER GLYCOLS, POLYALKYLENEETHES HAVING AT LEAST THREE HYDROXYL GROUPS, POLYESTER POLYOLS PREPARED FROM POLYHYDRIC ALCOHOLS AND DICARBOXYLIC ACIDS, GLYCERINE, FATTY ACID TRIGLYCERIDES HAVING A HYDROXYL NUMBER OF AT LEAST ABOUT 49, AND TETROLS PREPARED BY REACTING ETHYLENE DIAMINE WITHETHYLENE OXIDE AND PROPYLENE OXIDE, THE IMPROVEMENT COMPRISING MIXING SAID POLYURETHANE COMPOSITION PRIOR TO THE FORMATION OF THE CELLULAR MATERIAL WITH FROM BOUT 0.05 TO 2.0% BY WEIGHT OF A WATER-SOLUBLE ORGANO-SILICON PLYMER HAVING A MOLECULAR WEIGHT OF FROM ABOUT 2,800 TO 6,000 AND HAVING THE STRUCTURE
Claim 2
Dependent Claim
188 words
IN THE PROCESS FOR THE FORMATION OIF A CELLULAR MATERIAL FROM THE REACTION OF WATER WITH A WATER-FOAMABLE POLYISOCYANATE POLYURETHANE COMPOSITION HAVING A FREE ISOCYANATO CONTENT OF FROM ABOUT 3.0 TO 25.0% BY WEIGHT, SAID POLYURETHANE COMPOSITION BEING OBTAINED BY REACTING AN ORGANIC POLYISOCYANATE WITH AN ORGANIC COMPOUND CONTAINING A PLURALITY OF ALCOHOLIC HYDROXYLK GROUPS WITH THE PROPORTIONS OF REACTANTS BEING SUCH THAT THE RATIO OF THE NUMBER OF FREE ISOCYANATO GROUPS TO THE NUMBER OF ALCOHOLIC HYDROXYL GROUPS IS GREATER THAN ONE, SAID ORGANIC COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF POLYALKYLENEETHER GLYXOLS, POLYALKYLENEETHER - THIOETHER GLYCOLS, POLYALKYLENE - ARYLENEETHER GLYCOLS, POLYALKYLENEARYLENEETHER-THIOEHTER GLYCOLS, POLYALKYLENEETHES HAVING AT LEAST THREE HYDROXYL GROUPS, POLYESTER POLYOLS PREPARED FROM POLYHYDRIC ALCOHOLS AND DICARBOXYLIC ACIDS, GLYCERINE, FATTY ACID TRIGLYCERIDES HAVING A HYDROXYL NUMBER OF AT LEAST ABOUT 49, AND TETROLS PREPARED BY REACTING ETHYLENE DIAMINE WITHETHYLENE OXIDE AND PROPYLENE OXIDE, THE IMPROVEMENT COMPRISING MIXING SAID POLYURETHANE COMPOSITION PRIOR TO THE FORMATION OF THE CELLULAR MATERIAL WITH FROM BOUT 0.05 TO 2.0% BY WEIGHT OF A WATER-SOLUBLE ORGANO-SILICON PLYMER HAVING A MOLECULAR WEIGHT OF FROM ABOUT 2,800 TO 6,000 AND HAVING THE STRUCTURE
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) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |