US2692873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomers from polyalkylene ether glycol reacted with arylene diisocyanate and water
Assignee: EIDP Inc
•
Filing: 1952-05-17
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Granted: 1954-10-26
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Expires: 1972-05-17
Abstract
No abstract record available.
Inventors
- 👤 Esley O Langerak
- 👤 Lawrence J Prucino
- 👤 William R Remington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:18
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/02; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/089; C08G18/10; C08G18/16; C08G18/166; C08G18/168; C08G18/18; C08G18/1875; C08G18/28; C08G18/30; C08G18/302; C08G18/40; C08G18/48; C08G18/4825; C08G18/4833; C08G2110/00; C08G2110/0008; C08G2110/0083; C08J2375/00; C08J2375/04; C08J2375/08; Y; Y10; Y10S; Y10S528/00; Y10S528/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN A PROCESS FOR PREPARING AN ELASTOMERIC CONDENSATION PRODUCT BY HEATING TOGETHER A POLYALKYLENE ETHER GLYCOL HAVING A MOLECULAR WEIGHT BETWEEN 750 AND 10,000 WITH AN ARYLENE DIISOCYANATE IN THE PRESENCE OF WATER, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE HEATING IN THE PRESENCE OF FROM 0.1 TO 0.5%, BASED ON THE WEIGHT OF DIISOCYANATE, OF AN ACID-REACTING COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACID HALIDES IN WHICH THE HALOGEN HAS AN ATOMIC WEIGHT BETWEEN 35 AND 127 AND INORGANIC ACIDS.
Claim 2
Dependent Claim
82 words
IN A PROCESS FOR PREPARING AN ELASTOMERIC CONDENSATION PRODUCT BY HEATING TOGETHER A POLYALKYLENE ETHER GLYCOL HAVING A MOLECULAR WEIGHT BETWEEN 750 AND 10,000 WITH AN ARYLENE DIISOCYANATE IN THE PRESENCE OF WATER, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE HEATING IN THE PRESENCE OF FROM 0.1 TO 0.5%, BASED ON THE WEIGHT OF DIISOCYANATE, OF AN ACID-REACTING COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACID HALIDES IN WHICH THE HALOGEN HAS AN ATOMIC WEIGHT BETWEEN 35 AND 127 AND INORGANIC ACIDS.
References Cited (Backward Citations)
US2531392A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-25 | 1958-04-26 | 1958-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-25 | 1962-04-26 | 1962-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-25 | 1966-04-26 | 1966-10-26 | $7700.00 | Window Closed / Lapsed |