Cathodic electrocoating compositions containing an...

Details Cathodic electrocoating compositions containing an... Cathodic electrocoating compositions containing an...

C - Chemistry, Metallurgy

09

D

C09D 5/44 (2006.01) C09D 7/06 (2006.01)

Patent

CA 2167368

An improved aqueous electrocoating composition that contains an anticrater agent which is a reaction product of poly epoxy hydroxy ether resin, polyoxyalkylene diamine and an amino, glycidyl or isocyanate functional alkyl alkoxy silane having a number average molecular weight of about 1,000-6,000; electrodeposited finishes are formed that have a significant reduction in craters and are smooth and even finishes.

Une composition améliorée, aqueuse, de revêtement électrolytique contient un agent empêchant la formation cratère qui est un produit de réaction de résine poly époxy hydroxy éther, de diamine polyoxyalkylène et d'un alkyle alkyle alcoxy possédant un groupe fonctionnel amino, glycidyl ou isocyanate et ayant un poids moléculaire moyen au nombre d'environ 1000 à 6000; on obtient ainsi des couches de finition déposées par électrolyse dont la quantité de cratères a considérablement diminué et qui sont lisses et régulières.

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