Heat-curable mixtures, which are stable on storage, of expoxide resins and .beta.-aminocrotonic acid derivatives
AssigneeCiba-Geigy Corporation
InventorTheobald Haug
Life of this patent
Estimating the term…
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 .beta.-aminocrotonic acid derivatives, such as .beta.-aminocrotononitrile, .beta.-aminocrotonamide or .beta.-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.
Claims4
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 .beta.-aminocrotonic acid derivative of the formula I to X ##STR37## in which R.sup.1 and R.sup.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 .beta.-aminocrotonic acid derivative, containing the grouping ##STR38##
Dependencies are inferred from the claim text.