US4291146A
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Heat-curable mixtures, which are stable on storage, of expoxide resins and β-aminocrotonic acid derivatives
Assignee: BASF Corp
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Filing: 1979-10-29
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Granted: 1981-09-22
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Expires: 1999-10-29
Abstract
Abstract Heat-curable mixtures of one or more epoxide compounds, which, on average, have more than one epoxide group in the molecule, and one or more β-aminocrotonic acid derivatives, such as β-aminocrotononitrile, β-aminocrotonamide or β-aminocrotonic acid esters, and also, if desired, a polyamine or polycarboxylic acid anhydride or a maleimide. The novel curable mixtures are distinguished by outstanding stability on storage, can be processed easily and give moulded materials with good mechanical properties.
Inventors
- 👤 Theobald Haug
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:22
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/44; C08G59/4007; C08G59/4014; C08G59/50; C08G59/52; C08G59/54
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
146 words
A heat-curable mixture which is stable on a storage, which contains (a) an epoxide compound with, on average, more than one epoxide group in the molecule and (b) a β-aminocrotonic acid derivative of the formula I to X ##STR37## in which R 1 and R 2 independently of one another are each a hydrogen atom, alkyl having 1 to 6 C atoms, cycloalkyl having 5 or 6 C atoms or aryl having 6 to 10 C atoms, Y is a n-valent organic radical having 2 to 30 C atoms, R is an aromatic or aliphatic radical having not more than 30 C atoms, E, together with the two N atoms, is a heterocyclic, five-membered or six-membered ring and n is a number from 1 to 3, the curable mixture containing 2 to 8 epoxide equivalents per 1 equivalent of β-aminocrotonic acid derivative, containing the grouping ##STR38##
Claim 2
Dependent Claim
146 words
A heat-curable mixture which is stable on a storage, which contains (a) an epoxide compound with, on average, more than one epoxide group in the molecule and (b) a β-aminocrotonic acid derivative of the formula I to X ##STR37## in which R 1 and R 2 independently of one another are each a hydrogen atom, alkyl having 1 to 6 C atoms, cycloalkyl having 5 or 6 C atoms or aryl having 6 to 10 C atoms, Y is a n-valent organic radical having 2 to 30 C atoms, R is an aromatic or aliphatic radical having not more than 30 C atoms, E, together with the two N atoms, is a heterocyclic, five-membered or six-membered ring and n is a number from 1 to 3, the curable mixture containing 2 to 8 epoxide equivalents per 1 equivalent of β-aminocrotonic acid derivative, containing the grouping ##STR38##
Claim 3
Dependent Claim
117 words
A mixture according to claim 1, which contains a glycidyl ether or a N-glycidyl compound as the epoxide compound and a β-aminocrotonic acid derivative of the formula I, III, IV, V, VI, VIII, IX or X, in which R 1 is a hydrogen atom and R 2 is an alkyl having 1 to 6 C atoms, Y is alkylene having 2 to 10 C atoms, m- or p-phenylene or a divalent radical of the formulae ##STR39## wherein X is O, S or CH 2 . ##STR40## M is 2 to 8; R is an aliphatic radical having not more than 10 C atoms, the grouping ##STR41## is the radical of the formula ##STR42## and n is 2.
Claim 4
Dependent Claim
51 words
A mixture according to claim 1, which contains at least one diglycidyl ether of a dihydric phenol as the epoxide compound and a β-aminocrotonic acid derivative of the formula I, IV, V or VI, in which R 1 , R 2 , Y and n are as defined in claim 2.
Claim 5
Dependent Claim
41 words
A mixture according to claim 1, which contains a diglycidyl ether of dihydric phenol as the epoxide compound and a β-aminocrotonic acid derivative of the formula VI in which R 1 , Y and n are as defined in claim 2.
References Cited (Backward Citations)
DD125275A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1984-09-21 | 1985-03-23 | 1985-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-21 | 1989-03-23 | 1989-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-21 | 1993-03-23 | 1993-09-22 | $7700.00 | Window Closed / Lapsed |