Patent EP-0068263-B1 (EP)
IPC: C08G59/62
Filed: 1982-06-14
Granted: 1985-06-05
Abstract: 1. Claims (for the Contracting States : BE, CH, DE, GB, LI, NL) Use of Mannich-bases of the general formula  see diagramm : EP0068263,P16,F1  as cross-linking agents for epoxy resins for the production of shaped articles, in which in formula (I) R**10 is hydrogen or the group  see diagramm : EP0068263,P16,F2  in which R**1 to R**3 represent identical or different alkyl radicals having 1 to 5 carbon atoms each, it also being possible, however, for one of the radicals R**1 to R**3 to be hydrogen, and, in this case, for the other two radicals together to represent an alkylene radical of 4 to 6 carbon atoms, each of which can be substituted by a group such as -OH or -OR**5 , which is inert with respect to the formation of the Mannich-base and to the epoxide hardening reaction, R**4 denotes H-, HO-, HOOC- or alkyl radicals having 1 to 9 carbon atoms, R**5 denotes alkyl having 1 to 5 carbon atoms, R**6 is hydrogen or alkyl having 1 to 4 carbon atoms and R**7 is one of the following groups (II) to (XII) :  see diagramm : EP0068263,P16,F3   see diagramm : EP0068263,P16,F4   see diagramm : EP0068263,P16,F5   see diagramm : EP0068263,P16,F6   see diagramm : EP0068263,P16,F7   see diagramm : EP0068263,P16,F8   see diagramm : EP0068263,P16,F9   see diagramm : EP0068263,P16,F10   see diagramm : EP0068263,P17,F1   see diagramm : EP0068263,P17,F2  and  see diagramm : EP0068263,P17,F3  in which in formula (X) n is an integer from 2 to 6 and in formulae (IX) to (XII) m is an integer from 1 to 4 and in which R**8 is H- or CH3 - and wherein at most 50%, preferably at most 25% of the radicals R**8 are CH3 . 1. Claims (for the Contracting State : AT) Process for the production of shaped articles and coating by reaction of epoxide compounds having more than 1,2-epoxy groups per molecule, which optionally can be in mixture with monoepoxides, with substituted amines, as substituted amines Mannich-bases of the general formula see diagramm : EP0068263,P18,F1  being used, in which in formula (I) R**10 is hydrogen or the group  see diagramm : EP0068263,P18,F2  in which R**1 to R**3 represent identical or different alkyl radicals having 1 to 5 carbon atoms each, it also being possible, however, for one of the radicals R**1 to R**3 to be hydrogen, and, in this case, for the other two radicals together to represent an alkylene radical of 4 to 6 carbon atoms, each of which can be substituted by a group such as -OH or -OR**5 , which is inert with respect to the formation, of the Mannich-base and to the epoxide hardening reaction, R**4 denotes H-, HO-, HOOC- or alkyl radicals having 1 to 9 carbon atoms, R**5 denotes alkyl having 1 to 5 carbon atoms, R**6 is hydrogen or alkyl having 1 to 4 carbon atoms and R**7 is one of the following groups (II) to (XII) :  see diagramm : EP0068263,P18,F3   see diagramm : EP0068263,P18,F4   see diagramm : EP0068263,P18,F5   see diagramm : EP0068263,P18,F6   see diagramm : EP0068263,P18,F7   see diagramm : EP0068263,P18,F8   see diagramm : EP0068263,P18,F9   see diagramm : EP0068263,P18,F10   see diagramm : EP0068263,P19,F1   see diagramm : EP0068263,P19,F2  and  see diagramm : EP0068263,P19,F3  in which in formula (X) n is an integer from 2 to 6 and in formulae (XI) to (XII) m is an integer from 1 to 4 and in which R**8 is H- or CH3 - and wherein at most 50%, preferably at most 25% of the radicals R**8 are CH3 .