US4201854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable epoxide resin mixtures
Assignee: BASF Corp
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Filing: 1978-09-28
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Granted: 1980-05-06
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Expires: 1998-09-28
Abstract
Abstract Curable mixtures of polyepoxide compounds which contain an amine curing agent have longer curing times, and thus, in particular, good workability when used as adhesives, when N,N-dimethylethylenediamine derivatives or N,N-dimethyl-1,3-propylenediamine derivatives are used as the curing agents. The mechanical properties are also frequently improved.
Inventors
- 👤 Helmut Zondler
- 👤 Hans Lehmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:16
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
103 words
A curable mixture comprising: (a) a polyepoxide compound having an average of more than one epoxide group per molecule; and (b) a curing agent of the formula ##STR30## wherein A is ##STR31## R 1 is hydrogen, acyl or a group of the formula A'CN or A'CH 2 NH 2 where A' is ##STR32## or together with R 2 is alkylidene, alkenylidene, cycloalkylidene or cycloalkenylidene, R 2 is a saturated or olefinically unsaturated aliphatic radical, a saturated or olefinically unsaturated cycloaliphatic radical or said aliphatic or cycloaliphatic radical substituted with an aryl group, or a group of the formula A'CN or A'CH 2 CN.
Claim 2
Dependent Claim
103 words
A curable mixture comprising: (a) a polyepoxide compound having an average of more than one epoxide group per molecule; and (b) a curing agent of the formula ##STR30## wherein A is ##STR31## R 1 is hydrogen, acyl or a group of the formula A'CN or A'CH 2 NH 2 where A' is ##STR32## or together with R 2 is alkylidene, alkenylidene, cycloalkylidene or cycloalkenylidene, R 2 is a saturated or olefinically unsaturated aliphatic radical, a saturated or olefinically unsaturated cycloaliphatic radical or said aliphatic or cycloaliphatic radical substituted with an aryl group, or a group of the formula A'CN or A'CH 2 CN.
Claim 3
Dependent Claim
17 words
A curable mixture according to claim 1, wherein R 2 is alkyl, alkenyl, cycloalkyl, cycloalkenyl or aralkyl.
Claim 4
Dependent Claim
43 words
A curable mixture according to claim 1, wherein A is --CH 2 CH 2 -- or --CH 2 CH 2 CH 2 -- and R 2 , is alkyl, cycloalkyl or aralkyl, or R 1 and R 2 together are alkylidene or cycloalkylidene.
Claim 5
Dependent Claim
12 words
A curable mixture according to claim 1, wherein A is ##STR33## .
Claim 6
Dependent Claim
20 words
A curable mixture according to claim 1, wherein R 1 is hydrogen and R 2 is alkyl, cycloalkyl or aralkyl.
Claim 7
Dependent Claim
56 words
A curable mixture according to claim 3, wherein the alkyl or alkenyl contains 1 to 12, the cycloalkyl or cycloalkenyl contains 5 to 8 ring carbon atoms, the aralkyl contains 7 to 12 C atoms, the alkylidene or alkenylidene contans 2 to 8 C atoms, the cycloalkylidene or cycloalkenylidene contains 5 to 8 ring carbon atoms.
Claim 8
Dependent Claim
23 words
A curable mixture according to claim 1, wherein A is --CH 2 CH 2 -- or --CH 2 CH 2 CH 2 --.
Claim 9
Dependent Claim
15 words
A curable mixture according to claim 1, wherein A' is --CH 2 CH 2 --.
Claim 10
Dependent Claim
27 words
A curable mixture according to claim 1, wherein R 1 is H and R 2 is ethyl, n-propyl, isopropyl, n- or iso-butyl, cyclopentyl, cyclohexyl, β-cyanoethyl or γ-aminopropyl.
Claim 11
Dependent Claim
18 words
A curable mixture according to claim 1, wherein R 1 and R 2 are either β-cyanoethyl or γ-aminopropyl.
Claim 12
Dependent Claim
19 words
A curable mixture according to claim 1, wherein R 1 and R 2 together are i-butylidene, benzylidene or cyclohexylidene.
Claim 13
Dependent Claim
34 words
A curable mixture according to claim 1, wherein A is --CH 2 CH 2 -- or --CH 2 CH 2 CH 2 --, R 1 is hydrogen and R 2 is β-cyanoethyl or γ-aminopropyl.
Claim 14
Dependent Claim
29 words
A curable mixture according to claim 1, which contains 0.1 to 30 and preferably 0.3 to 25 parts of the curing agent based on 100 parts of polyepoxide compound.
Claim 15
Dependent Claim
21 words
A curable mixture according to claim 1, wherein the curing agent is selected from the group consisting of the compounds ##STR34##
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) | 1983-05-06 | 1983-11-05 | 1984-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-06 | 1987-11-05 | 1988-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-06 | 1991-11-05 | 1992-05-06 | $7700.00 | Window Closed / Lapsed |