US3298976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular polyurethane containing barytes and method of making same
Assignee: ER Carpenter Co
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Filing: 1966-05-12
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Granted: 1967-01-17
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Expires: 1986-05-12
Abstract
No abstract record available.
Inventors
- 👤 Myron H Reinhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:52
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0085; C08J9/0066; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/24; C08K7/00; C08K7/22; C08K7/24; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN A PROCESS FOR PRODUCING A FOAMED POLYURETHANE WHICH COMPRISES REACTING AN ORGANIC POLYISOCYANATE HAVING AT LEAST TWO FUNCTIONAL ISOCYANATE GROUPS WITH A POLYETHER POLYOL HAVING HYDROGEN ATOMS REACTIVE WITH SAID ISOCYANATE GROUPS IN THE PRESENCE OF AN ACTIVATOR MIXTURE COMPRISING WATER AND A CATALYST FOR THE REACTION, TO FORM SAID FOAMED POLYURETHANE, THE IMPROVEMENT WHICH COMPRISES REACTING SAID POLYISOCYANATE AND SAID POLYOL IN THE PRESENCE OF FROM ABOUT 0.5 TO ABOUT 2.00 PARTS BY WEIGHT OF WATER PER 100 PARTS BY WEIGHT OF SAID POLYOL AND IN THE PRESENCE OF ABOUT 50 TO 150 PARTS BY WEIGHT OF FINELY DIVIDED PARTICLES OF BARYTES BASED UPON 100 PARTS BY WEIGHT OF SAID POLYOL, SAID BARYTES PARTICLES BEING OF A SIZE SUCH THAT THEY WILL FALL WITHIN THE CURVES A AND B OF THE DRAWING IN THE PERCENTAGES INDICATED.
Claim 2
Dependent Claim
138 words
IN A PROCESS FOR PRODUCING A FOAMED POLYURETHANE WHICH COMPRISES REACTING AN ORGANIC POLYISOCYANATE HAVING AT LEAST TWO FUNCTIONAL ISOCYANATE GROUPS WITH A POLYETHER POLYOL HAVING HYDROGEN ATOMS REACTIVE WITH SAID ISOCYANATE GROUPS IN THE PRESENCE OF AN ACTIVATOR MIXTURE COMPRISING WATER AND A CATALYST FOR THE REACTION, TO FORM SAID FOAMED POLYURETHANE, THE IMPROVEMENT WHICH COMPRISES REACTING SAID POLYISOCYANATE AND SAID POLYOL IN THE PRESENCE OF FROM ABOUT 0.5 TO ABOUT 2.00 PARTS BY WEIGHT OF WATER PER 100 PARTS BY WEIGHT OF SAID POLYOL AND IN THE PRESENCE OF ABOUT 50 TO 150 PARTS BY WEIGHT OF FINELY DIVIDED PARTICLES OF BARYTES BASED UPON 100 PARTS BY WEIGHT OF SAID POLYOL, SAID BARYTES PARTICLES BEING OF A SIZE SUCH THAT THEY WILL FALL WITHIN THE CURVES A AND B OF THE DRAWING IN THE PERCENTAGES INDICATED.
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) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |