US3085983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of cellular polyurethane plastics
Assignee: Bayer Corp
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Filing: 1959-09-03
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Granted: 1963-04-16
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Expires: 1979-09-03
Abstract
No abstract record available.
Inventors
- 👤 Edgar E Hardy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:40
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08J2375/00; C08J2375/04; C08J2375/08; C08J2433/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN THE MANUFACTURE OF CELLULAR POLYURETHANE PLASTICS BY A PROCESS WHICH COMPRISES REACTING WATER WITH AN ORGANIC POLYISOCYANATE MODIFIED POLYHYDRIC POLYALKYLENE ETHER CONTAINING TERMINAL -NCO GROUPS, SAID POLYHYDRIC POLYALKYLENE ETHER HAVING FROM 2 TO 4 HYDROXYL GROUPS, THE IMPROVEMENT WHICH COMPRISES MIXING SAID WATER AND SAID POLYISOCYANATE MODIFIED POLYHYDRIC POLYALKYLENE ETHER WITH FROM ABOUT 0.2 TO ABOUT 4.5 PARTS PER HUNDRED PARTS OF POLYISOCYANATE MODIFIED POLYHYDRIC POLYALKYLENE ETHER OF A POLYMER HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF FROM ABOUT 1000 TO ABOUT 10,000 WHICH HAS BEEN OBTAINED BY THE POLYMERIZATION OF ETHYL ACRYLATE AND AT LEAST ABOUT 50 PERCENT BY WEIGHT OF 2-ETHYL HEXYL ACRYLATE.
Claim 2
Dependent Claim
107 words
IN THE MANUFACTURE OF CELLULAR POLYURETHANE PLASTICS BY A PROCESS WHICH COMPRISES REACTING WATER WITH AN ORGANIC POLYISOCYANATE MODIFIED POLYHYDRIC POLYALKYLENE ETHER CONTAINING TERMINAL -NCO GROUPS, SAID POLYHYDRIC POLYALKYLENE ETHER HAVING FROM 2 TO 4 HYDROXYL GROUPS, THE IMPROVEMENT WHICH COMPRISES MIXING SAID WATER AND SAID POLYISOCYANATE MODIFIED POLYHYDRIC POLYALKYLENE ETHER WITH FROM ABOUT 0.2 TO ABOUT 4.5 PARTS PER HUNDRED PARTS OF POLYISOCYANATE MODIFIED POLYHYDRIC POLYALKYLENE ETHER OF A POLYMER HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF FROM ABOUT 1000 TO ABOUT 10,000 WHICH HAS BEEN OBTAINED BY THE POLYMERIZATION OF ETHYL ACRYLATE AND AT LEAST ABOUT 50 PERCENT BY WEIGHT OF 2-ETHYL HEXYL ACRYLATE.
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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |