US3314901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of polyurethane foams
Assignee: BASF SE
•
Filing: 1963-07-03
•
Granted: 1967-04-18
•
Expires: 1983-07-03
Abstract
No abstract record available.
Inventors
- 👤 Daumiller Guenther
- 👤 Wilhelm Hans
- 👤 Wegner Eberhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:28
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6283; C08G18/4009; C08G18/4063; C08G2101/00; C08G2110/00; C08G2110/0041; C08G2110/005; C08G2110/0058; C08G2110/0083; C08G2350/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
IN A PROCESS FOR THE PRODUCTION OF POLYURETHANE FOAMS BY REACTING AN ORGANIC AROMATIC POLYISOCYANATE AND A HYDROXYL CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYESTERS AND POLYETHERS IN THE PRESENCE OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (1) WATER AND (2) A READLY VOLATILE ORGANIC COMPOUND WHICH IS INERT TO ISOCYANATES AND WHOSE BOILING POINT IS BETWEEN 0*C. AND 100*C., THE IMPROVEMENT WHICH COMPRISES: CARRYING OUT THE REACTION IN THE PRESENCE OF AT LEAST ONE COPOLYMER CONTAINING (1) A GROUP SELECTED FROM THE GROUP CONSISTING OF HYDROXYL, CARBOXYL, AND CARBOXYLIC AMIDE AND (2) TERTIARY NITROGEN ATOMS; SAID COPOLYMER HAVING BEEN OBTAINED FROM THE COPOLYMERIZATION OF MONOMERIC POLYMERIZABLE ALPHA-BETA-ETHYLENICALLY UNSATURATED MONOMERS; THE AMOUNT OF SAID COPOLYMER COMPRISING FROM 5 TO 75% BY WEIGHT OF THE TOTAL INITAL REACTION MIXTURE.
Claim 2
Dependent Claim
132 words
IN A PROCESS FOR THE PRODUCTION OF POLYURETHANE FOAMS BY REACTING AN ORGANIC AROMATIC POLYISOCYANATE AND A HYDROXYL CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYESTERS AND POLYETHERS IN THE PRESENCE OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (1) WATER AND (2) A READLY VOLATILE ORGANIC COMPOUND WHICH IS INERT TO ISOCYANATES AND WHOSE BOILING POINT IS BETWEEN 0*C. AND 100*C., THE IMPROVEMENT WHICH COMPRISES: CARRYING OUT THE REACTION IN THE PRESENCE OF AT LEAST ONE COPOLYMER CONTAINING (1) A GROUP SELECTED FROM THE GROUP CONSISTING OF HYDROXYL, CARBOXYL, AND CARBOXYLIC AMIDE AND (2) TERTIARY NITROGEN ATOMS; SAID COPOLYMER HAVING BEEN OBTAINED FROM THE COPOLYMERIZATION OF MONOMERIC POLYMERIZABLE ALPHA-BETA-ETHYLENICALLY UNSATURATED MONOMERS; THE AMOUNT OF SAID COPOLYMER COMPRISING FROM 5 TO 75% BY WEIGHT OF THE TOTAL INITAL REACTION MIXTURE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |