C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 59/22 (2006.01) C08G 59/38 (2006.01) C09D 5/44 (2006.01) C09D 17/00 (2006.01) C25D 13/06 (2006.01)
Patent
CA 2070680
In order to increase the stone chip resistance of automobile finishes aqueous electrocoating paints are used which are produced by the use of a pigment paste which contains as grinding resin an at least partially protonated epoxide-amine adduct which is obtainable by reacting (A) a glycidyl ether of a polyphenol which contains on statistical average at least one epoxide group in the molecule, or a mixture of such glycidyl ethers, (B) a polyglycidyl ether of a polyol which contains on statistical average more than 1.0 epoxide groups in the molecule, or a mixture of such polyglycidyl ethers, and (C) a compound which contains a primary amino group in the molecule or a mixture of such compounds with each other in such a stoichiometric ratio that an epoxide-amine adduct is obtained in which on statistical average at least 2.0 primary amino groups of the com- ponent (C) are incorporated in a chain-extending function with the formation of tertiary amino groups and the resultant epoxide-amine adduct is at least partially protonated.
Brukken Thomas
Heimann Ulrich
Jouck Walter
Ott Gunther
Reiter Udo
Basf Lacke + Farben Aktiengesellschaft
Fetherstonhaugh & Co.
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