LIGAND AND COMPLEX FOR CATALYTIC WHITENING SUBSTRATE Russian patent published in 2006 - IPC C11D3/395 C11D7/54 C07D471/08 D06L3/00

Abstract RU 2283342 C2

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to a whitening composition comprising: (a) monomeric ligand or catalyst with transient metal of ligand of the formula (I): wherein R represents hydrogen atom; R1 and R2 are chosen independently from (C₁-C₄)-alkyl, pyridine-2-yl-methyl and (C₂-C₄)-alkylmethyl; X represents -C=O; R3 and R4 are similar and represent -(CH₂)_nC(O)O-(C₁-C₄)-alkyl; n = 0-4, and (b) equilibrating carriers and additional components. This composition is useful for catalytic whitening substrates with atmosphere oxygen. Also, invention describes a method for whitening the substrate involving applying step of the whitening composition on substrate in aqueous medium.

EFFECT: valuable properties of substances, improved whitening method.

11 cl, 2 tbl

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RU 2 283 342 C2

Authors

Bertsel' Khejdi

Komba Peter

Khage Ronal'D

Kersher Marion

Linke Joakhim

Merts Mikhael'

Dates

2006-09-10—Published

2001-11-15—Filed