US3201358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing a polyurethane foam
Assignee: Union Carbide Corp
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Filing: 1962-10-02
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Granted: 1965-08-17
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Expires: 1982-10-02
Abstract
No abstract record available.
Inventors
- 👤 Hostettler Fritz
- 👤 Eugene F Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:31
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/161; C08G18/163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A METHOD FOR PRODUCING A URETHANE FOAM WHICH COMPRISES REACTING AN ORGANIC POLYISOCYANATE WITH A POLYOL IN THE PRESENCE OF A CATALYST AND A FORMING AGENT, WHEREIN THE CATALYST IS A MIXTURE OF 1,4-DIAZABICYCLO(2,2,2) OCTANE AND A METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ANTIMONY TRICHLORIDE, TITANIUM TETRACHLORIDE, AND DIOCTYL LEAD DICHLORIDE, WHEREIN THE MOLAR CONCENTRATION RATIO OF SAID METAL COMPOUND TO SAID 1,4-DIAZABICYCLO(2,2,2)OCTANE VARIES FRO 100:1 TO 1 :10,000.
Claim 2
Independent Claim
71 words
A METHOD FOR PRODUCING A URETHANE FOAM WHICH COMPRISES REACTING AN ORGANIC POLYISOCYANATE WITH A POLYOL IN THE PRESENCE OF A CATALYST AND A FORMING AGENT, WHEREIN THE CATALYST IS A MIXTURE OF 1,4-DIAZABICYCLO(2,2,2) OCTANE AND A METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ANTIMONY TRICHLORIDE, TITANIUM TETRACHLORIDE, AND DIOCTYL LEAD DICHLORIDE, WHEREIN THE MOLAR CONCENTRATION RATIO OF SAID METAL COMPOUND TO SAID 1,4-DIAZABICYCLO(2,2,2)OCTANE VARIES FRO 100:1 TO 1 :10,000.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |