US3179628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Triethylene diamine and a polyimine cocatalyst system polyurethane polymerization
Assignee: Air Products and Chemicals Inc
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Filing: 1963-03-08
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Granted: 1965-04-20
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Expires: 1983-03-08
Abstract
No abstract record available.
Inventors
- 👤 Burton D Beitchman
- 👤 Jack H Krause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:32
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/02; C08G18/06; C08G18/08; C08G18/16; C08G18/166; C08G18/168; C08G18/18; C08G18/20; C08G18/2045; C08G18/2063; Y; Y10; Y10S; Y10S528/00; Y10S528/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN THE PREPARATION OF POLYURETHANE MATERIAL IN WHICH A REACTION MIXTURE CONTAINING TOYLENE DIISOCYANATE AND A POLYETHERPOLYOL IS CATALYTICALLY REACTED BY REASON OF ADMIXING WITH SUCH REACTION MIXTURE A CATALYST COMPOSITION, THE IMPROVEMENT WHICH CONSISTS OF PREPARING THE POLYURETHANE BY ADMIXING WITH SUCH REACTION MIXTURE A CO-CATALYST COMPOSITION CONSISTING OF TRIETHYLENEDIAMINE, AND A POLYIMINE SELECTED FROM THE GROUP CONSISTING OF TRIS 1-AZIRIDINYL PHOSPHINE OXIDE, 1,6-BIS(N,N-ETHYLENE CARBAMINO)-HEXANE, AND 2,4-BIS (N,N-ETHYLENE CARBAMIDO) TOLUENE.
Claim 2
Dependent Claim
71 words
IN THE PREPARATION OF POLYURETHANE MATERIAL IN WHICH A REACTION MIXTURE CONTAINING TOYLENE DIISOCYANATE AND A POLYETHERPOLYOL IS CATALYTICALLY REACTED BY REASON OF ADMIXING WITH SUCH REACTION MIXTURE A CATALYST COMPOSITION, THE IMPROVEMENT WHICH CONSISTS OF PREPARING THE POLYURETHANE BY ADMIXING WITH SUCH REACTION MIXTURE A CO-CATALYST COMPOSITION CONSISTING OF TRIETHYLENEDIAMINE, AND A POLYIMINE SELECTED FROM THE GROUP CONSISTING OF TRIS 1-AZIRIDINYL PHOSPHINE OXIDE, 1,6-BIS(N,N-ETHYLENE CARBAMINO)-HEXANE, AND 2,4-BIS (N,N-ETHYLENE CARBAMIDO) TOLUENE.
References Cited (Backward Citations)
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 |