Laundry care compositions containing dyes

1. A method of treating a polyester and/or nylon-comprising textile, the method comprising the steps of

(i) treating the textile with an aqueous solution comprising a laundry care adjunct and from about 1 ppb to about 500 ppm of a thiophene azo carboxylate dye; and

(ii) rinsing and drying the textile,

said dye having a structure of Formula I:

wherein R 1 and R 2 are independently selected from [(CH 2 CR′HO) x (CH 2 CR″HO) y Q], C 1-12 alkyl, C 6-10 aryl, or C 7 -C 22 aryl alkyl, with the requirement that at least one of R 1 and R 2 is [(CH 2 CR′HO) x (CH 2 CR″HO) y Q],

wherein R′ is selected from the group consisting of H, C 1-4 alkyl, CH 2 O (CH 2 CH 2 O) z Q, phenyl and CH 2 OR 5 ;

wherein R″ is selected from the group consisting of H, C 1-4 alkyl, CH 2 O(CH 2 CH 2 O) z Q, phenyl and CH 2 OR 5 ;

wherein 1≦x+y≦50:

wherein y≧1;

wherein −z=0 to 20; and

wherein Q is selected from the group consisting of H and Y wherein Y is as defined below; with the proviso that the dye comprises at least one Q group that is Y;

each R 5 is selected from the group consisting of C 1 -C 16 linear or branched alkyl, C 6 -C 14 aryl, C 7 -C 16 arylalkyl and mixtures thereof;

and wherein Y is an organic radical represented by Formula II

wherein independently for each Y group,

M is H or a charge balancing cation; m is 0 to 5; n is 0 to 5; the sum of m+n is 1 to 10; each R 8 is independently selected from the group consisting of H and C 3-18 alkenyl, and wherein at least one R 8 group is not H.

2. A method according to claim 1 wherein the textile comprises in addition to the polyester and/or nylon, cellulosic textile.

3. A method according to claim 1 wherein R 1 and R 2 are each [(CH 2 CR′HO) x (CH 2 CR″HO) y Q];

wherein R′ is selected from the group consisting of H, CH 3 , and CH 2 O(CH 2 CH 2 O) z Q;

wherein R″ is selected from the group consisting of H and CH 2 O(CH 2 CH 2 O) z Q; wherein x+y≦5; wherein y≧1; wherein z=5; and wherein Q is selected from the group consisting of H and Y wherein Y is as defined below; with the proviso that at least one Q group on either of R 1 or R 2 is Y; or

R 1 is selected from C 1-12 alkyl, C 6-10 aryl, or C 7 -C 22 aryl alkyl, and R 2 is [(CH 2 CR′HO) x (CH 2 CR″HO) y Q]

wherein R′ is selected from the group consisting of H, CH 3 , and CH 2 O(CH 2 CH 2 O) z Q;

wherein R″ is selected from the group consisting of H and CH 2 O(CH 2 CH 2 O) z Q; wherein x+y≦10; wherein y≧1; wherein z=0 to 2; and wherein Q is selected from the group consisting of H and Y wherein Y is as defined below; with the proviso that at least one Q group is Y; or

wherein R 1 and R 2 are independently selected from the group consisting of C 1-12 alkyl, C 6-10 aryl, C 7 -C 22 aryl alkyl, and the organic radical represented by Formula III:

wherein R 3 is selected from the group consisting of phenyl and —CH 2 OR 5 ; each R 4 is selected from the group consisting of H, C 1 -C 4 alkyl, and mixtures thereof; wherein q is an integer from 0 to 50; and wherein Q is selected from the group consisting of H and Y wherein Y is as defined below; with the proviso that at least one Q group is Y; each R 5 is selected from the group consisting of C 1 -C 16 linear or branched alkyl, C 6 -C 14 aryl and C 7 -C 16 arylalkyl and mixtures thereof;

wherein Y is an organic radical represented by Formula II

wherein independently for each Y group M is H or a charge balancing cation; m is 0 to 5; n is 0 to 5; the sum of m+n is 1 to 10; each R 8 is independently selected from the group consisting of H and C 3-18 alkenyl, wherein at least one R 8 group is not H.

4. A method according to claim 1 wherein R′ is selected from the group consisting of H, CH 3 , CH 2 O(CH 2 CH 2 O) z Q, and mixtures thereof; wherein R″ is selected from the group consisting of H, CH 3 , CH 2 O(CH 2 CH 2 O) z Q, and mixtures thereof; wherein x+y≦5; wherein y≧1; wherein z=0 to 5; and wherein Q is selected from the group consisting of H and Y wherein Y is as defined in claim 1 ; with the proviso that at least one Q group on either of R 1 or R 2 is Y.

5. A method according to claim 1 wherein the dye comprises one Q group that is Y on each of R 1 and R 2 .

6. A method according to claim 1 wherein the thiophene azo dye has a molecular weight from greater than about 500 Daltons to about 2500 Daltons.

7. A method according to claim 1 wherein said aqueous solution comprises a perfume microcapsule comprising a core and a shell that encapsulates said core, said perfume microcapsule having a D[4,3] average particle of from about 0.01 microns to about 200 microns.

8. A method according to claim 1 in which the dye has the following structure:

9. 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 R 1 and R 2 are independently selected from [(CH 2 CR′HO) x (CH 2 CR″HO) y Q], C 1-12 alkyl, C 6-10 aryl, or C 7 -C 22 aryl alkyl, with the requirement that at least one of R 1 and R 2 is [(CH 2 CR′HO) x (CH 2 CR″HO) y Q],

wherein R′ is selected from the group consisting of H, C 1-4 alkyl, CH 2 O(CH 2 CH 2 O) z Q, phenyl and CH 2 OR 5 ;

wherein R″ is selected from the group consisting of H, C 1-4 alkyl, CH 2 O(CH 2 CH 2 O) z Q, phenyl and CH 2 OR 5 ;

wherein 1≦x+y−50;

wherein y≧1;

wherein −z=0 to 20; and

wherein Q is selected from the group consisting of H and Y wherein Y is as defined below; with the proviso that the dye comprises at least one Q group that is Y;

each R 5 is selected from the group consisting of C 1 -C 16 linear or branched alkyl, C 6 -C 14 aryl, C 7 -C 16 arylalkyl and mixtures thereof;

and wherein Y is an organic radical represented by Formula II

wherein independently for each Y group,

M is H or a charge balancing cation; m is 0 to 5; n is 0 to 5; the sum of m+n is 1 to 10; each R 8 is independently selected from the group consisting of H and C 3-18 alkenyl, and wherein at least one R 8 group is not H, and a laundry care adjunct wherein the laundry care adjunct comprises a fluorescent agent selected from: sodium 2 (4-styryl-3-sulfophenyl)-2H-napthol[1,2-djtriazole, disodium 4,4′-bis{[(4-anilino-6-{N methyl-N-2 hydroxyethyl)amino 1,3,5-triazin-2-yl)]amino}stilbeno-2-2′ disulfonate, disodium 4,4′-bis[(4-anilino-6-morpholino-1,3,5-triazin-2-yl)amino]stilbene-2-2′ disulfonate, or disodium 4,4′-bis(2-sulfostyryl)biphenyl, in an amount of from about 0.005 to about 2 wt % of the laundry care composition.

10. A laundry care composition according to claim 9 additionally comprising a first wash lipase.

11. A laundry care composition according to claim 10 additionally comprising a dye transfer inhibitor selected from the group consisting of:

(a) polyvinylpyrrolidone polymers;

(b) polyamine N-oxide polymers;

(c) copolymers of N-vinylpyrrolidone and N-vinylimidazole;

(d) polyvinyloxazolidones;

(e) polyvinylimidazoles; and

(f) mixtures thereof.

12. A laundry care composition according to claim 10 additionally comprising a soil suspension polymer selected from the group consisting of:

(a) amphiphilic alkoxylated polyamines;

(b) amphiphilic graft co-polymers;

(c) zwitterionic soil suspension polymer; and

(d) mixtures thereof.

13. A laundry care composition according to claim 10 comprising a laundry care adjunct and a thiophene azo carboxylate dye, the dye having the structure of Formula I:

wherein R 1 and R 2 are independently selected from [(CH 2 CR′HO) x (CH 2 CR″HO) y Q], C 1-12 alkyl, C 6-10 aryl, or C 7 -C 22 aryl alkyl, with the requirement that at least one of R 1 and R 2 is [(CH 2 CR′HO) x (CH 2 CR″HO) y Q],

wherein R′ is selected from the group consisting of H, C 1-4 alkyl, CH 2 O(CH 2 CH 2 O) z Q, phenyl and CH 2 OR 5 ;

wherein R″ is selected from the group consisting of H, C 1-4 alkyl, CH 2 O(CH 2 CH 2 O) z Q, phenyl and CH 2 OR 5 ;

wherein 1≦x+y≦50;

wherein y≧1;

wherein −z=0 to 20; and

wherein Q is selected from the group consisting of H and Y wherein Y is as defined below; with the proviso that the dye comprises at least one Q group that is Y;

each R 5 is selected from the group consisting of C 1 -C 16 linear or branched alkyl, C 6 -C 14 aryl, C 7 -C 16 arylalkyl and mixtures thereof;

and wherein Y is an organic radical represented by Formula II

wherein independently for each Y group,

M is H or a charge balancing cation; m is 0 to 5; n is 0 to 5; the sum of m+n is 1 to 10; each R 8 is independently selected from the group consisting of H and C 4-7 alkenyl and C 9-18 alkenyl, and wherein at least one R 8 group is not H.

14. A laundry care composition according to claim 10 , said laundry care composition being a unit dose pouch.

15. A laundry care composition according to claim 14 being a multi-compartment unit dose product.

16. A laundry care composition according to claim 10 , said laundry care composition comprising (a) no greater than about 15% water based on total laundry care composition weight, and (b) from about 10% to about 70% of a water-miscible organic solvent having a molecular weight of greater than about 70 Daltons.