C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 5/44 (2006.01) C08L 63/00 (2006.01) C09K 15/14 (2006.01) C25D 13/08 (2006.01)
Patent
CA 2084566
An improved aqueous electrocoating composition having a binder of an epoxy-amine adduct and a blocked polyisocyanate crosslinking agent; wherein the improvement is the use of an antioxidant additive which is a combination of a phenolic antioxidant and a sulfur-containing antioxidant. The additive reduces overbake yellowing of the composition and the intercoat delamination of the composition and the topcoat upon exterior exposure.
Chung Ding Y.
Kirshenbaum Kenneth S.
Bennett Jones Llp
E. I. Du Pont de Nemours And Company
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