US3314903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil extended polyurethane foam and process for preparing same
Assignee: Sunoco Inc
•
Filing: 1966-06-02
•
Granted: 1967-04-18
•
Expires: 1986-06-02
Abstract
No abstract record available.
Inventors
- 👤 Steven G Belak
- 👤 William J Stout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:19
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08J2375/00; C08J2375/04; C08J2491/00; Y; Y10; Y10S; Y10S264/00; Y10S264/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PROCESS FOR THE PRODUCTION OF AN OIL-EXTENDED RIGID POLYURETHANE FOAM HAVING 96 TO 100% OF THE CELL WALLS INTACT COMPRISING BLENDING (1) FROM 5 TO 17 WEIGHT PERCENT OF AN OIL DERIVED FROM PETROLEUM REFINING OPERATIONS HAVING A VISCOSITY IN THE RANGE OF 30-100 SAYBOLT UNIVERSAL SECOND AT 210*F., A VISCOSITY-GRAVITY CONSTANT IN THE RANGE OF 0.79 TO 1.05, AND A MOLECULAR WEIGHT IN THE RANGE OF 200-500; (2) A LIQUID POLYOL HAVING A MOLECULAR WEIGHT IN THE RANGE FROM ABOUT 500 TO ABOUT 10,000 AND A HYDROXYL NUMBER OF AT LEAST 250; (3) AN AROMATIC DI-ISOCYANATE; (4) AN EMULSIFIER; (5) A CATALYST AND (6) A BLOWING AGENT; AND FOAMING THE MIXTURE.
Claim 2
Dependent Claim
113 words
A PROCESS FOR THE PRODUCTION OF AN OIL-EXTENDED RIGID POLYURETHANE FOAM HAVING 96 TO 100% OF THE CELL WALLS INTACT COMPRISING BLENDING (1) FROM 5 TO 17 WEIGHT PERCENT OF AN OIL DERIVED FROM PETROLEUM REFINING OPERATIONS HAVING A VISCOSITY IN THE RANGE OF 30-100 SAYBOLT UNIVERSAL SECOND AT 210*F., A VISCOSITY-GRAVITY CONSTANT IN THE RANGE OF 0.79 TO 1.05, AND A MOLECULAR WEIGHT IN THE RANGE OF 200-500; (2) A LIQUID POLYOL HAVING A MOLECULAR WEIGHT IN THE RANGE FROM ABOUT 500 TO ABOUT 10,000 AND A HYDROXYL NUMBER OF AT LEAST 250; (3) AN AROMATIC DI-ISOCYANATE; (4) AN EMULSIFIER; (5) A CATALYST AND (6) A BLOWING AGENT; AND FOAMING THE MIXTURE.
References Cited (Backward Citations)
US3190842A
Cited
US3165483A
Cited
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 |