C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 65/26 (2006.01) C08G 18/50 (2006.01) C08G 65/22 (2006.01) C09D 5/44 (2006.01) C09D 163/00 (2006.01)
Patent
CA 2279872
An improved aqueous electrocoating composition that contains an anticrater agent which is a reaction product of polyoxyalkylene diamine and glycidoxy alkyl alkoxy silane which is hydrolyzed and has a number average molecular weight of about 700-5,000; electrodeposited finishes are formed that have a significant reduction in craters and are smooth and even finishes.
L'invention concerne une composition aqueuse de revêtement électrolytique améliorée, qui renferme un agent empêchant la formation de cratères, cet agent étant un produit de réaction de diamine polyoxyalkylène et d'alcoxysilane glycidoxyalcoylé alcoxysilane; ce produit est hydrolysé et présente une masse moléculaire moyenne en nombre d'environ 700-5000. On obtient ainsi des couches de finition déposées par électrolyse, dont le nombre de cratères a considérablement diminué, et qui présentent un aspect lisse et régulier.
Chung Ding Yu
Gam Allisa
Bennett Jones Llp
E.i. Du Pont de Nemours And Company
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