US3385807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular urethanes and process for preparing same wherein a combination of stannous and lead salts are employed
Assignee: Honeywell International Inc
•
Filing: 1965-11-05
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Granted: 1968-05-28
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Expires: 1985-11-05
Abstract
No abstract record available.
Inventors
- 👤 Richard J Herdlein
- 👤 Shultz Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:04
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4804; C08G18/08; C08G18/16; C08G18/22; C08G18/26; C08G18/4812; Y; Y10; Y10S; Y10S521/00; Y10S521/914
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A ONE-SHOT PROCESS FOR PREPARING FLEXIBLE CELLULAR URETHANE FOAMS COMPRISING ADMIXING: (A) ORGANIC DIISOCYANATE; (B) A POLLYETHER POLYOL; (C) WATER; (D) AN ORGANIC-TIN CATALYST SELECTED FROM THE GROUP CONSISTING OF STANNOUS OLEATE AND STANNOUS OCTOATE IN AN AMOUNT OF ABOUT 1200 TO ABOUT 3800 PARTS BY WEIGHT PER MILLION PARTS BY WEIGHT OF POLYETHER POLYOL; AND (E) A LOAD CONFORMING AGENT CONSISTING ESSENTIALLY OF TRACE AMOUNTS OF A LEAD SALT OF AN ORGANIC CARBOXYLIC ACID OF 5 TO 30 CARBON ATOMS, SAID LEAD SALT BEING PRESENT IN AN AMOUNT PROVIDING ABOUT 10 TO ABOUT 175 PARTS BY WEIGTH OF LEAD PER MILLION PARTS BY WEIGHT OF POLYETHER POLYOL WITH THE PROVISO THAT WHEN MORE THAN ABOUT 2300 PARTS BY WEIGHT OF SAID ORGANIC TIN COMPOUND AND LESS THAN AOUT 70 PARTS BY WEIGHT OF SAID LEAD PER MILLION PARTS BY WEIGHT OF SAID POLYETHER POLYOL IS USED, SAID POLYETHER POLYOL IS AN ETHYLENE OXIDE TIPPED POLYETHER POLYOL
Claim 2
Dependent Claim
157 words
A ONE-SHOT PROCESS FOR PREPARING FLEXIBLE CELLULAR URETHANE FOAMS COMPRISING ADMIXING: (A) ORGANIC DIISOCYANATE; (B) A POLLYETHER POLYOL; (C) WATER; (D) AN ORGANIC-TIN CATALYST SELECTED FROM THE GROUP CONSISTING OF STANNOUS OLEATE AND STANNOUS OCTOATE IN AN AMOUNT OF ABOUT 1200 TO ABOUT 3800 PARTS BY WEIGHT PER MILLION PARTS BY WEIGHT OF POLYETHER POLYOL; AND (E) A LOAD CONFORMING AGENT CONSISTING ESSENTIALLY OF TRACE AMOUNTS OF A LEAD SALT OF AN ORGANIC CARBOXYLIC ACID OF 5 TO 30 CARBON ATOMS, SAID LEAD SALT BEING PRESENT IN AN AMOUNT PROVIDING ABOUT 10 TO ABOUT 175 PARTS BY WEIGTH OF LEAD PER MILLION PARTS BY WEIGHT OF POLYETHER POLYOL WITH THE PROVISO THAT WHEN MORE THAN ABOUT 2300 PARTS BY WEIGHT OF SAID ORGANIC TIN COMPOUND AND LESS THAN AOUT 70 PARTS BY WEIGHT OF SAID LEAD PER MILLION PARTS BY WEIGHT OF SAID POLYETHER POLYOL IS USED, SAID POLYETHER POLYOL IS AN ETHYLENE OXIDE TIPPED POLYETHER POLYOL
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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) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |