Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1991-12-11
1993-04-27
Michl, Paul R.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
524 81, 524291, 524901, 523453, 523456, 523461, 528 45, C25D 1306, C08L 6300, C08K 536, C08K 513
Patent
active
052059162
ABSTRACT:
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.
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patent: 5049249 (1991-09-01), Chung et al.
Chung Ding Y.
Kirshenbaum Kenneth S.
E. I. Du Pont de Nemours and Company
Fricke Hilmar L.
Michl Paul R.
Yoon Tae H.
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