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Patent
Title
Pulverlackzusammensetzung enthaltend ein epoxyfunktionalisiertes Silanharz
Other Title
Powder lacquer giving good corrosion protection on untreated metal.
Abstract
NOVELTY - In a powder lacquer composition containing an epoxy-reactive polymer as binder, an epoxy-functional siloxane resin hardener and optionally additives such as pigment, filler, thermal stabilizer, flow aid and/or degassing agent, the hardener is a compound obtained by hydrolysis and condensation of 80-95 mol% organosiloxane (I) and 5-30 mol% epoxy-functionalized silane (II) and/or epoxy-functional silane (III) at 0-80 deg. C. DETAILED DESCRIPTION - R2SiX2 (I); R''SiX3 (II); R''R'''SiX2 (III) R = optionally substituted aryl; X = OH or OR'; R', R''' = 1-4C alkyl; R'' = an epoxy-functional organic group. USE - The lacquers are useful for coating metals. ADVANTAGE - Hardeners produced from chlorosilanes have detrimental effects and good protection from corrosion cannot be obtained without pretreating the metal surface. Lacquers containing the present hardeners avoid this drawback.
Inventor(s)
Barglik-Chory, C.
Haas, K.
Patent Number
1998-19801266
Publication Date
2000
Language
German