Patent US4433170A successfully refreshed from Google Patents.
US4433170A
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Novel bis(aminoethyl)ether derivatives useful as polyurethane catalysts
Assignee: Huntsman Corp
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Filing: 1981-07-20
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Granted: 1984-02-21
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Expires: 2001-07-20
Abstract
Abstract The alkylene oxide adduct of bis(aminoethyl)ether may be reacted with formaldehyde in the presence of hydrogen and a hydrogenation-dehydrogenation catalyst to produce new compounds of the formula ##STR1## where R is hydrogen or lower alkyl and R" is methyl or ##STR2## These compounds show unexpectedly high efficiency as polyurethane catalysts. Fewer equivalents of this amine are required to produce foams having the same reaction profile as foams made with piror art amine catalysts.
Inventors
- 👤 Robert L. Zimmerman
- 👤 Ernest L. Yeakey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:46
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1825
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
21 words
A composition of matter having the formula ##STR10## where R is hydrogen or lower alkyl and R" is methyl or ##STR11##
Claim 2
Dependent Claim
21 words
A composition of matter having the formula ##STR10## where R is hydrogen or lower alkyl and R" is methyl or ##STR11##
Claim 3
Dependent Claim
7 words
The composition of matter consisting of 2-[N-(dimethylaminoethoxyethyl)-N-methylamino]ethanol.
Claim 4
Dependent Claim
7 words
The composition of matter consisting of 2-[N-(dimethylaminoethoxyethyl)-N-methylamino]ethanol.
Claim 5
Dependent Claim
8 words
The composition of matter consisting of 2-[N-(dimethylaminoethoxyethyl)-N-methylamino]-1-methyl ethanol.
Claim 6
Dependent Claim
8 words
The composition of matter consisting of 2-[N-(dimethylaminoethoxyethyl)-N-methylamino]-1-methyl ethanol.
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) | 1987-02-20 | 1987-08-22 | 1988-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-20 | 1991-08-22 | 1992-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-20 | 1995-08-22 | 1996-02-21 | $7700.00 | Window Closed / Lapsed |