Patent US2571161A successfully refreshed from Google Patents.
US4324739A
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Dimethylamino derivatives and their use
Assignee: BASF Corp
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Filing: 1980-03-31
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Granted: 1982-04-13
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Expires: 2000-03-31
Abstract
Abstract (Dimethylaminoalkyl)carboxylic and -carbamic acid esters and (dimethylaminoalkyl) ethers and ureas are compounds which are especially suitable for use as amine curing agents for polyepoxide compounds. They impart longer curing times to the curable mixtures and thus good processing properties, especially when the mixtures are used as adhesives. In addition, the mechanical properties are often improved. Further, these compounds afford advantages when used as curing agents on account of their low volatility.
Inventors
- 👤 Helmut Zondler
- 👤 Roland Moser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:53
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/28; C07C275/04; C07C275/06; C07C275/14; C07C275/16; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/50; C08G59/52
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
77 words
A compound of the formula (CH.sub.3).sub.2 N--X--NR.sup.10 CONHR.sup.9 wherein X is ethylene, 1,3-propylene or 1,3-propylene substituted in the 1- or 2-position by methyl, R 9 is alkyl of 1 to 12 carbon atoms, cycloalkyl of 5 to 7 carbon atoms, aryl of 6 to 12 carbon atoms, alkaryl of 7 to 16 carbon atoms or alkaralkyl of 8 to 16 carbon atoms, and R 10 is β-cyanoethyl or β-cyanoethyl substituted in the 1- or 2-position by methyl.
Claim 2
Dependent Claim
77 words
A compound of the formula (CH.sub.3).sub.2 N--X--NR.sup.10 CONHR.sup.9 wherein X is ethylene, 1,3-propylene or 1,3-propylene substituted in the 1- or 2-position by methyl, R 9 is alkyl of 1 to 12 carbon atoms, cycloalkyl of 5 to 7 carbon atoms, aryl of 6 to 12 carbon atoms, alkaryl of 7 to 16 carbon atoms or alkaralkyl of 8 to 16 carbon atoms, and R 10 is β-cyanoethyl or β-cyanoethyl substituted in the 1- or 2-position by methyl.
Claim 3
Dependent Claim
9 words
A compound according to claim 1 which is ##STR46##
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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) | 1985-04-12 | 1985-10-12 | 1986-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-12 | 1989-10-12 | 1990-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-12 | 1993-10-12 | 1994-04-13 | $7700.00 | Window Closed / Lapsed |