Patent US3267058A successfully refreshed from Google Patents.
US3267058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethanes prepared from polyisocyanates and polyols derived from hydroxyl copolymers
Assignee: Bayer Corp
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Filing: 1961-10-30
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Granted: 1966-08-16
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Expires: 1981-10-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph C Hixenbaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:32
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/65; C08G18/6547; C08G18/40; C08G18/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A POLYURETHANE PREPARED BY A PROCESS WHICH COMPRISES REACTING AN ORGANIC POLYISOCYANATE WITH THE REACTION PRODUCT OF A VEGETABLE OIL WHICH IS SUBSTANTIALLY FREE OF HYDROXYL GROUPS, UNSATURATED ACIDS OF THESE OILS OR TALL OIL, A LOW MOLECULAR WEIGHT POLYHYDRIC ALCOHOL HAVING 2 TO 6 HYDROXYL GROUPS AND FROM ABOUT 2 PERCENT TO ABOUT 25 PERCENT BY WEIGHT OF SAID REACTION PRODUCT OF A COPOLYMER OF AN ETHYLENICALLY UNSATURATED MONOHYDRIC ALCOHOL HAVING ONLY ONE ETHYLENICALLY UNSATURATED GROUP AND AN ALKENYL SUBSTITUTED AROMATIC COMPOUND HAVING ONLY ONE ELTHYLENICALLY UNSATURATED GROUP, THE -NCO TO -OH RATIO BEING WITHIN THE RANGE OF FROM ABOUT 0.8 TO ABOUT 1.05.
Claim 2
Dependent Claim
105 words
A POLYURETHANE PREPARED BY A PROCESS WHICH COMPRISES REACTING AN ORGANIC POLYISOCYANATE WITH THE REACTION PRODUCT OF A VEGETABLE OIL WHICH IS SUBSTANTIALLY FREE OF HYDROXYL GROUPS, UNSATURATED ACIDS OF THESE OILS OR TALL OIL, A LOW MOLECULAR WEIGHT POLYHYDRIC ALCOHOL HAVING 2 TO 6 HYDROXYL GROUPS AND FROM ABOUT 2 PERCENT TO ABOUT 25 PERCENT BY WEIGHT OF SAID REACTION PRODUCT OF A COPOLYMER OF AN ETHYLENICALLY UNSATURATED MONOHYDRIC ALCOHOL HAVING ONLY ONE ETHYLENICALLY UNSATURATED GROUP AND AN ALKENYL SUBSTITUTED AROMATIC COMPOUND HAVING ONLY ONE ELTHYLENICALLY UNSATURATED GROUP, THE -NCO TO -OH RATIO BEING WITHIN THE RANGE OF FROM ABOUT 0.8 TO ABOUT 1.05.
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |