US3832402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tertiary polyoxyalkylenepolyamines
Assignee: Texaco Inc
•
Filing: 1972-03-01
•
Granted: 1974-08-27
•
Expires: 1992-03-01
Abstract
Abstract New tertiary amines prepared from polyoxyalkylenepolyamines are useful catalysts for preparing urethane foams. The new tertiary amines are prepared by alkylation of the polyoxyalkylenepolyamine with an aldehyde and hydrogenation of the product.
Inventors
- 👤 E Yeakey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:19
CPC Classifications
C; C07; C07D; C07D265/00; C07D265/28; C07D265/30; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1833; C08G65/00; C08G65/02; C08G65/32; C08G65/321; C08G65/325; C08G65/3255
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
9 words
A compound according to claim 1 having the formula
Claim 2
Dependent Claim
1 words
3,3''-(Methylethylenedioxy)bis(N,N-dimethylisopropylamine).
Claim 3
Dependent Claim
9 words
A compound according to claim 1 having the formula
Claim 4
Dependent Claim
10 words
A compound according to claim 4 wherein A is methyl.
Claim 5
Dependent Claim
9 words
A compound according to claim 1 having the formula
Claim 6
Dependent Claim
10 words
A compound according to claim 6 wherein A is methyl.
Claim 7
Dependent Claim
5 words
A compound having the formula
References Cited (Backward Citations)
US2683147A
Cited
US3654370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |