US3179626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of polymers of polyisocyanates and polyurethane polymers using diazabicyclo-ocatane and aldehydes as co-catalysts
Assignee: Air Products and Chemicals Inc
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Filing: 1961-01-17
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Granted: 1965-04-20
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Expires: 1981-01-17
Abstract
No abstract record available.
Inventors
- 👤 Burton D Beitchman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:14
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/166; C08G18/168; C08G18/02; C08G18/022; C08G18/18; C08G18/20; C08G18/2045; C08G18/2063; Y; Y10; Y10S; Y10S521/00; Y10S521/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE METHOD OF PREPARING POLYMERIC COMPOSITIONS WHICH CONSISTS OF: PREPARING A REACTION MIXTURE CONTAINING TOLYLENE DIISOCYANTE; ADDING TO SUCH REACTION MIXTURE A CATALYST COMPOSITION PROVIDING, ER 100 PARTS OF SAID REACTION MIXTURE, FROM 0.1 PART TO 10 PARTS OF A MIXTURE OF DISZABICYCLOOCTANNE AND C1 TO C10 ALDEHYDE, THERE BEING FROM 0.01 PART TO 10 PARTS OF DIAZABICYCLOOCTANE PER PART OF C1 TO C10 ALDEHYDE; AND RECOVERING THE POLYMERIC COMPOSITION RESULTING FROM THE POLYMERIZATION OF THE REACTION MIXTURE UNDER THE INFLUENCE OF SAID CATALYST COMPOSITION.
Claim 2
Independent Claim
85 words
THE METHOD OF PREPARING POLYMERIC COMPOSITIONS WHICH CONSISTS OF: PREPARING A REACTION MIXTURE CONTAINING TOLYLENE DIISOCYANTE; ADDING TO SUCH REACTION MIXTURE A CATALYST COMPOSITION PROVIDING, ER 100 PARTS OF SAID REACTION MIXTURE, FROM 0.1 PART TO 10 PARTS OF A MIXTURE OF DISZABICYCLOOCTANNE AND C1 TO C10 ALDEHYDE, THERE BEING FROM 0.01 PART TO 10 PARTS OF DIAZABICYCLOOCTANE PER PART OF C1 TO C10 ALDEHYDE; AND RECOVERING THE POLYMERIC COMPOSITION RESULTING FROM THE POLYMERIZATION OF THE REACTION MIXTURE UNDER THE INFLUENCE OF SAID CATALYST COMPOSITION.
References Cited (Backward Citations)
US2888411A
Cited
GB848965A
Cited
US2939851A
Cited
US2949431A
Cited
US3087912A
Cited
US3010963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |