US4467089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbamate and carbonate salts of tertiary amines
Assignee: Sumitomo Metal Mining Co Ltd
•
Filing: 1982-03-04
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Granted: 1984-08-21
•
Expires: 2002-03-04
Abstract
Abstract Novel carbamic and carbonic acid derivatives are provided by simultaneous reaction of a secondary amine and a tertiary amine with carbon dioxide. These derivatives correspond in general to the formula ##STR1## in which R 1 and R 2 may be individual substituents attached to the N or together form with N a heterocyclic moiety; R 3 , R 4 , R 5 may be individual short chain alkyl or hydroxyalkyl substituents on the N or form therewith a monocyclic or bicyclic heterocyclic moiety. These described compounds find particular use as heat activatable delayed action catalysts especially for use in polyurethane formulations.
Inventors
- 👤 Ibrahim S. Bechara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:29
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/02; C07D295/027; C07D295/16; C07D295/20; C07D295/205; C07D487/00; C07D487/02; C07D487/08; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1875; C08G18/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
7 words
The triethylene diamine salt of carbonic acid.
Claim 2
Dependent Claim
7 words
The triethylene diamine salt of carbonic acid.
Claim 3
Dependent Claim
7 words
The bis(dimethylaminoethyl) ether salt of carbonic acid.
Claim 4
Dependent Claim
7 words
The bis(dimethylaminoethyl) ether salt of carbonic acid.
References Cited (Backward Citations)
US3839252A
Cited
US3655719A
Cited
US3728291A
Cited
US3767602A
Cited
US3962100A
Cited
US4102863A
Cited
US4141810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |