C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/250
C08G 59/34 (2006.01) C08G 59/14 (2006.01) C09D 5/44 (2006.01)
Patent
CA 1180489
Abstract of Disclosure A process for preparing a cathodic electrodepositable coating composi- tion which comprises, in sequence, (i) epoxidizing a high-molecular-weight compound containing a carbon- carbon double bond and having a molecular weight of 500 to 10,000 and an iodine value of 100 to 500 to form an epoxidized high-molecular-weight compound con- taining 0.5 to 12% by weight of oxirane oxygen, (ii) reacting a part of the epoxy groups of the epoxidized high- molecular-weight compound with a basic amine compound of the general formula Image wherein R1 and R2, independently from each other, represent a hydro- carbon group having 1 to 10 carbon atoms which may be partly replaced by a hydroxyl group, and R1 and R2 together may form a cyclic struc- ture, (iii) reacting a part or the whole of the remaining epoxy groups with an .alpha.,.beta.-unsaturated monocarboxylic acid of the general formula Image wherein R3 and R4 represent a hydrogen atom or a methyl group, at least one of them being a hydrogen atom, to prepare a resin composition, and (iv) neutralizing the resin composition with an organic or inorganic acid to render it water-soluble or water-dispersible.
376349
Aoyama Kazuho
Araki Yoshihiko
Hara Hajime
Omika Hiroyoshi
Otsuki Yutaka
Nippon Oil Co. Ltd.
Smart & Biggar
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