| 主权项 |
1. A laundry care composition comprising from about 0.00001 wt % to about 0.5 wt % thiophene azo carboxylate dye having the structure of Formula I: wherein D1 is a thiophene group; wherein D2 is a carbocylic phenylene; wherein the two N atoms shown in Formula I bound directly to the carbocyclic phenylene are in a para-substitution to one another; wherein R1 is independently selected from [(CH2CR′HO)x(CH2CR″HO)y((CH2)wNH)zQ], C1-12 alkyl, C6-10 aryl, or C7-C22 aryl alkyl; wherein R2 is [(CH2CR′HO)x′(CH2CR″HO)y′(CH2)w′NH)z′Q]; wherein the sum of x+y+x′+y′ is in the range of from about 0 to about 50; wherein x is an integer from 0 to about 50; wherein x′ is an integer from 0 to about 50; wherein y is an integer from 0 to about 50; wherein y′ is an integer from 0 to about 50; wherein w and w′ are integers independently selected from about 2 and about 3; wherein z and z′ are integers independently selected from 0 and about 1; wherein R′ and R″ are each independently selected from the group consisting of H, C1-C4 alkyl, CH2O(CH2CH2O)a((CH2)bNH)dQ, phenyl and CH2OR5; wherein each R5 is independently selected from the group consisting of C1-C16 linear or branched alkyl, C6-C14 aryl, and C7-C16 arylalkyl; wherein each a is an integer independently selected from 0 to about 2; wherein each b is an integer independently selected from about 2 to about 3; wherein each d is an integer independently selected from 0 to about 1; wherein each Q is independently selected from the group consisting of H and Y; wherein each Y is an independently selected organic radical represented by Formula II: wherein independently for each Y group: M is H or a charge balancing cation; m is an integer selected from 0 to about 5; n is an integer selected from about 0 to about 5; the sum of m+n is in the range of from about 1 to about 10; and each R8 is independently selected from the group consisting of H, C3-18 or C4-C18 linear or branched alkyl, and C3-18 or C4-C18 linear or branched alkenyl; at least one R8 group is not H; wherein the sum of z+z′+d is at least 1; characterized in that the dye comprises at least one Q group that is Y and is either: (a) bound to a N atom in an R1 group wherein the index z is 1; or (b) bound to a N atom in an R2 group wherein the index z′ is 1; or (c) bound to a N atom in an R′ or R″ group wherein the index d is 1. |
