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Title
Verfahren zur Herstellung eines Lacks und seine Verwendung zum Beschichten von Substraten mit einem alkalistabilen und abriebbestaendigen Ueberzug
Date Issued
1994
Author(s)
Arpac, E.
Glaubitt, W.
Greiwe, K.
Patent No
1990-4025215
Abstract
The description refers to a process for the production of a paint based on hydrolyzable silanes, characterized by adding water to one or more hydrolyzable compounds of the general formula (I) SiR<-4, in which the residues R are selected from hydrolyzable groups, hydroxyl groups and non-hydrolyzable groups, whereby at least some of the non-hydrolyzable groups present have at least one amino group and the molar ratio of the hydrolyzable groups present to the residues present containing amino groups ranges from 5 : 1 to 1 : 1, whereby a molar ratio of water to hydrolyzable groups present is selected in the range 1 : 1 to 0.4 : 1, and by adding at least one compound containing at least two epoxy groups in the molecule before, during or after adding the water in such a quantity that the molar ratio of epoxy groups to amino groups in the non-hydrolyzable residues of the compounds of the general formula (I) ranges from 4 : 1 to 1 : 4. A paint obtained using this process exhibits in particular excellent alkaline resistance and wear resistance and is therefore suitable in particular for coating ceramic materials, glass and metals.
Language
de
Patenprio
DE 1990-4025215 A: 19900809