DE14207T1 - - Google Patents

Claims (1)

Claims 1 room temperature curing epoxy cement composition, which includes: (2) a mixed amine-ketimine hardener made from a cyclic polyamine with at least 2 aliphatic functional amino groups that react with the resinous epoxy, some of which is the aliphatic functional amir
no groups in the mixed amine-ketimine hardener in the
Is in ketimine group form; and (3) Water in at least about the stoichiometric amount to hydrolyze the ketimine groups to the free primary Amini 2, composition according to claim 1, wherein the ketiming group 00U207 pen the reaction products of functional primary
Are amine groups of the cyclic amino compound and a dialkyl ketone, a diaryl ketone or an alkyl aryl ketone having 3 to 13 carbon atoms. 3. The composition of claim 1 further comprising from about 5 to about 30 parts by weight of inorganic filler per part by weight Contains epoxy. 4. The composition of claim 1, wherein the cyclic Polyamine an aromatic compound with at least 2 is epoxy-reactive aminoalkyl substituents. 5. The composition of claim 4, wherein the cyclic Polyamine 1,3-bis (^ minomethyl) benzene is.
20th 6. The composition of claim 1, wherein the cyclic polyamine is a cycloaliphatic compound having at least two amino or aminoalkyl substituents which react with epoxy is. 7. The composition of claim 5, wherein the cyclic polyamine is 1 _> 3-bis (aminomethyl) cyclohexane. 8, the composition of claim 6, wherein the cyclic Polyamine ρ, ρ'-methylene-diCcyclohexylamin) is. 9. The composition of claim 6 wherein the cyclic polyamine is 1,3-diaminocyclohexane. 10, the composition of claim 6, wherein the cyclic Ü ■: 1 4 2 O Polyamine is N- (2-aminoethyl) piperazine. 11. The composition of claim 6, wherein the cyclic Polyamine 3,5, S-trimethyl-S- (aminomethy 1) cyclohexylamine is. 12. The composition of claim 6, wherein the cyclic Polyamine is 1,8-diamino-p-menthane. 13. The composition of claim 1, wherein the cyclic Polyamine compound is a heterocyclic compound, in which the nitrogen atom reacts with an epoxide functional amino group is part of the ring. 14. The composition of claim 11, wherein the cyclic Polyamine is N- (2-aminoethyl) piperazine. 15. The composition of claim 2, wherein the ketone is methyl isobutylketone. 16. The composition of claim 2 wherein the ketone is methyl isoamyl ketone is. 17. The composition of claim 1 wherein about 10 to about 90 mole percent of the aliphatic amino functional group in the mixed amine-ketimine hardener in the ketimine form are present. 18. Process for forming a protective epoxy cement coating on a substrate which comprises preparing a mixture of 00U207 (a) a resinous epoxy j (b) a mixed amine-ketimine hardener from one cyclic polyamine with at least two functional aliphatic amino groups that are linked to the resinous Epoxy react, leaving some of the aliphatic amino functional groups in the mixed amine-o Ketimine hardener is present in the form of the ketimine group j (c) water in at least about the stoichiometric amount to hydrolyze the ketimine groups to free Aminj and (d) about 5 to about 30 parts by weight of inorganic filler per part by weight of epoxy j Applying this mixture in the form of a layer with a thickness of about 1 to about 15 mm on the substrate; and Allow this layer to harden. 19. The method of claim 18 comprising the following steps comprises: preparing the mixture and partially reacting the mixture to form a sprayable Cement composition with enough body for the formation of a non-sagging layer a thickness of about 1 to about 15 mm on a substantially vertical surface and applying this sprayable composition on this substrate, 20 «The method of claim 18, wherein the cyclic polyamine is an aromatic compound having at least two epoxy-reactive aminoalkyl substituents. 00U207 21. The method of claim 18, wherein the cyclic polyamine a cycloaliphatic compound with at least two epoxide-reactive amino or aminoalkyl subs ütuenten is. 22. The method of claim 18, wherein the cyclic polyamine is a heterocyclic compound in which the nitrogen atom is an epoxy reactive functional Amino group is a member of the ring. 23. The method of claim 18 including the step of Control of the relationship between the functional components Amino groups in the ketimine form and the functional amino groups in the free amine form to adjust the Life of the mixture. 20th