C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/80 (2006.01) C08G 18/16 (2006.01) C08G 18/32 (2006.01) C08G 18/58 (2006.01) C09D 5/44 (2006.01) C25D 13/12 (2006.01)
Patent
CA 2476682
This invention is directed to an improved aqueous cathodic electrocoating composition and a method for the electrodeposition of this composition; the composition comprises a cathodic electrodepositable composition comprising a binder of (a) a cathodically electrodepositable film forming resin and (b) a polyisocyanate crosslinking agent blocked with a compound that is non- hazardous and non-air polluting, such as, an alkoxy alkanol or an alkyl alcohol; wherein the improvement comprises the use of 0.1-5.0% by weight, based on the weight of the binder, of a water miscible amine acid zwitterion additive which is the reaction product of an amine acid and an alkylglycidy ether.
L'invention concerne une composition aqueuse cathodique am~lior~e de revÚtement ~lectrolytique et un proc~d~ d'~lectrod~position de cette composition; celle-ci comprend une composition cathodique pouvant Útre d~pos~e par ~lectrod~position et renfermant un liant (a) d'une r~sine formant un film pouvant Útre d~pos~e par ~lectrod~position cathodique et (b) d'un agent de r~ticulation de polyisocyanate s~quenc~ avec un compos~ non dangereux et non polluant, tel qu'un alcoxy alcanol ou un alkyle alcool; l'am~lioration consistant ~ utiliser entre 0,1 et 5,0 % en poids, en fonction du poids du liant, d'un additif zwitt~rion d'acide amin~ miscible avec de l'eau qui est le produit de r~action d'un acide amin~ et d'un alkylglycidy ~ther.
Bennett Jones Llp
E.i. Du Pont de Nemours And Company
LandOfFree
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