| 摘要 |
The present invention relates to a laundry care composition comprising from 0.00001 wt % to 0.5 wt % mono-azo carboxylate dye having the structure of Formula I: wherein each R3 is independently selected from the group consisting of alkyl, oxyalkyl, oxyaryl, sulfonamidoalkyl, sulfonamidoaryl, amidoalkyl, amidodialkyl, amidoaryl, amidodiaryl, halogen, thioalkyl and thioaryl; wherein the index a is an integer from 0 to 4, preferably from 0 to 2; wherein D is an aromatic or heteroaromatic group, with the proviso that the heteroaromatic group is not a thiophene; wherein R1 is independently selected from the group consisting of: (a) unsubstituted or substituted C1 to C12 alkyl chains, optionally the alkyl chains comprise ether (C—O—C), ester and/or amide links, optionally the alkyl chains are substituted with —Cl, —Br, —CN, —NO2, —SO2CH3, —OH and mixtures thereof; and (b) (CH2CH2O)y((CH2)wNH)zQ; wherein R2 is (CH2CH2O)y′((CH2)w′NH)z′Q′. |
