COMPOSITION OF ELECTRIC COATING, CONTAINING ADDITIVE AGAINST FORMATION OF HOLES Russian patent published in 2015 - IPC C09D5/44 C09D133/00 C09D167/00 C09D177/00 C09D163/00 C09D175/04 C08K5/3492 

FIELD: chemistry.

SUBSTANCE: invention relates to composition of electrically precipitated coating, which contains resin, possessing cationic salt group, containing reactionable functional groups, and additive of the following structural formula:

,

where R₁, R₂, R₃, R₄, R₅ and R₆ contain -(C(R^I)HCH₂O)_m-R^II; where m equals 0, 1, 2 or 3, R^I represents H or has from 1 to 6 carbon atoms, and R^II has from 4 to 18 carbon atoms or represents CH₂-CH₂-Y-R^IV, where Y contains O, S or -C(O)NR^III, where R^III represents H or has from 1 to 6 carbon atoms; and R^IV represents H or has from 1 to 18 carbon atoms; and where, at least, one of R₁, R₂, R₃, R₄, R₅ and R₆ contains: H as R^I, R^II has 4 carbon atoms, and m=1, 2 or 3; and where, at least, one of R₁, R₂, R₃, R₄, R₅ and R₆ contains: H as R^I, R^II has 4 carbon atoms, and m=0. Resins, possessing cationic salt group, are produced from polyepoxide, acrylic acid, polyamide, polyurethane, polyether or their combination. Also described is substrate, which has, at least, partial coating from composition of electrically precipitated coating, containing additive of structural formula (I), and method of obtaining composition of electrically precipitated coating.

EFFECT: resistance to formation of holes in composition of electrically precipitated coating and improvement of covering coating adhesion.

16 cl, 3 tbl, 3 ex