US2955095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition comprising chain extended polyurethane dissolved in dialkyl sulfoxide and a ketone and process of coating therewith
Assignee: EIDP Inc
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Filing: 1958-01-08
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Granted: 1960-10-04
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Expires: 1978-01-08
Abstract
No abstract record available.
Inventors
- 👤 Gollob Fred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:23
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/48; C08G18/4825; C08J2375/00; C08J2375/04; C08J2375/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A NEW COMPOSITION OF MATTER COMPRISING A SOLUTION OF A POLYURETHANE ELASTOMER WHICH IS THE REACTION PRODUCT OF A POLYALKYLENE ETHER GLYCOL HAVING A MOLECULAR WEIGHT OF AT LEAST 750 AND REPRESENTED BY THE FORMULA HO(RO)NH IN WHICH R REPRESENTS AN ALKYLENE RADICAL AND N AN INTEGER GREATER THAN 1, AN ORGANIC DIISOCYANATE AND A CHAIN EXTENDING COMPOUND CONTAINING ACTIVE HYDROGEN ATOMS SELECTED FROM THE GROUP CONSISTING OF WATER AND HYDROGEN SULFIDE, SAID ELASTOMER BEING DISSOLVED IN A LIQUID COMPRISING 4 TO 85% OF A DIALKYL SULFOXIDE SELECTED FROM THE GROUP CONSISTING OF DIMETHYL SULFOXIDE, DIETHYL SULFOXIDE, DIPROPYL SULFOXIDE AND DIBUTYL SULFOXIDE, AND 96% TO 15% OF A KETONE SELECTED FROM THE GROUP CONSISTING OF METHYL ETHYL KETONE, ACETONE, METHYL ISOBUTYL KETONE AND CYCLOHEXANONE, SAID PERCENTAGE FIGURES BEING BASED ON THE COMBINED WEIGHT OF THE DIALKYL SULFOXIDE AND THE KETONE.
Claim 2
Dependent Claim
140 words
A NEW COMPOSITION OF MATTER COMPRISING A SOLUTION OF A POLYURETHANE ELASTOMER WHICH IS THE REACTION PRODUCT OF A POLYALKYLENE ETHER GLYCOL HAVING A MOLECULAR WEIGHT OF AT LEAST 750 AND REPRESENTED BY THE FORMULA HO(RO)NH IN WHICH R REPRESENTS AN ALKYLENE RADICAL AND N AN INTEGER GREATER THAN 1, AN ORGANIC DIISOCYANATE AND A CHAIN EXTENDING COMPOUND CONTAINING ACTIVE HYDROGEN ATOMS SELECTED FROM THE GROUP CONSISTING OF WATER AND HYDROGEN SULFIDE, SAID ELASTOMER BEING DISSOLVED IN A LIQUID COMPRISING 4 TO 85% OF A DIALKYL SULFOXIDE SELECTED FROM THE GROUP CONSISTING OF DIMETHYL SULFOXIDE, DIETHYL SULFOXIDE, DIPROPYL SULFOXIDE AND DIBUTYL SULFOXIDE, AND 96% TO 15% OF A KETONE SELECTED FROM THE GROUP CONSISTING OF METHYL ETHYL KETONE, ACETONE, METHYL ISOBUTYL KETONE AND CYCLOHEXANONE, SAID PERCENTAGE FIGURES BEING BASED ON THE COMBINED WEIGHT OF THE DIALKYL SULFOXIDE AND THE KETONE.
References Cited (Backward Citations)
US2843568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |