US4342687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-Substituted perhydrodioxazepines useful as polyurethane catalysts
Assignee: Texaco Inc
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Filing: 1981-09-08
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Granted: 1982-08-03
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Expires: 2001-09-08
Abstract
Abstract A primary amine may be reacted with formaldehyde and a 1,2-diol to produce N-substituted perhydrodioxazepines of the formula: ##STR1## where R is alkyl, alkoxyalkyl, aminoalkyl or aryl alkyl and R' is hydrogen or lower alkyl. These compounds may be easily prepared and have a low odor which is essential in their utility as polyurethane catalysts. By varying the R group, the catalytic characteristics of the compounds may be altered as desired.
Inventors
- 👤 Robert L. Zimmerman
- 👤 Edward E. McEntire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:29
CPC Classifications
C; C07; C07D; C07D273/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
23 words
A composition of matter having the formula ##STR4## where R is a tertiary amino alkyl radical and R' is hydrogen or lower alkyl.
Claim 2
Dependent Claim
23 words
A composition of matter having the formula ##STR4## where R is a tertiary amino alkyl radical and R' is hydrogen or lower alkyl.
Claim 3
Dependent Claim
7 words
The composition of matter consisting of 3-[3-(dimethylamino)propyl]perhydrodioxazepine-1,5,3.
Claim 4
Dependent Claim
7 words
The composition of matter consisting of 3-[3-(dimethylamino)propyl]perhydrodioxazepine-1,5,3.
Claim 5
Dependent Claim
8 words
The composition of matter consisting of 3-(3-morpholinopropyl)-6-methyl perhydrodioxazepine-1,5,3.
Claim 6
Dependent Claim
8 words
The composition of matter consisting of 3-(3-morpholinopropyl)-6-methyl perhydrodioxazepine-1,5,3.
Claim 7
Dependent Claim
7 words
The composition of matter consisting of 1,4-bis[3-(3-perhydrodioxazepinyl-1,5,3)propyl]piperazine.
Claim 8
Dependent Claim
7 words
The composition of matter consisting of 1,4-bis[3-(3-perhydrodioxazepinyl-1,5,3)propyl]piperazine.
References Cited (Backward Citations)
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US3925268A
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US4011223A
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Cited
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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) | 1985-08-02 | 1986-02-01 | 1986-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-02 | 1990-02-01 | 1990-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-02 | 1994-02-01 | 1994-08-03 | $7700.00 | Window Closed / Lapsed |