Laundry care compositions containing dyes

Abstract

This application relates to laundry care compositions comprising carboxylate fabric shading dyes and methods of treating a textile comprising such laundry care compositions.

What is claimed is: 
     
         1 . A laundry care composition comprising from 0.00001 wt % to 0.5 wt % carboxylate dye having the structure of Formula I:
   D-L-CO 2 M  Formula I
   
       wherein D is a dye moiety selected from benzodifuranes, methines, triphenylmethanes, naphthalimides, pyrazoles, naphthoquinones, anthraquinones and mono- and di-azo dyes and mixtures thereof, L is an organic linking group, and in the sequence of bonds starting from the carbonyl carbon of the C(O)OM group and ending at the dye moiety, any —(C a (O)—O b )— groups are incorporated such that the oxygen atom O b  is encountered prior to the carbonyl carbon C a ; and M is any suitable counterion. 
     
     
         2 . A laundry care composition according to  claim 1  wherein the dye is an anthraquinone or azo dye. 
     
     
         3 . A laundry care composition according to  claim 1  wherein the dye is an azo dye. 
     
     
         4 . A laundry care composition according to  claim 1  wherein the compound D-H, preferably has a maximum extinction coefficient greater than about 1000 liter/mol/cm at the λ max  in the wavelength range from 400 nm to 750 nm in methanol solution. 
     
     
         5 . A laundry care composition according to  claim 1  wherein the compound D-H has a maximum extinction coefficient from about 20,000 to about 100,000 liter/mol/cm at the λ max  in the wavelength range of about 560 nm to about 610 nm. 
     
     
         6 . A laundry care composition according to  claim 1  wherein group L has a molecular weight from 14 to 1000 Daltons. 
     
     
         7 . A laundry care composition according to  claim 1  wherein group L consists essentially only of C, H and optionally additionally O and/or N. 
     
     
         8 . A laundry care composition according to  claim 1  wherein group L is a C 1-20  alkylene chain having optionally therein ether (—O—) and/or ester and/or amide links, the chain being optionally substituted with —OH, —CN, —NO 2 , —SO 2 CH 3 , —Cl, —Br. 
     
     
         9 . A laundry care composition according to  claim 1  comprising a laundry care adjunct. 
     
     
         10 . A laundry care composition according to  claim 1  comprising a laundry care adjunct wherein the laundry care adjunct comprises a first wash lipase. 
     
     
         11 . A laundry care composition according to  claim 1  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, and disodium 4,4′-bis (2-sulfostyryl) biphenyl, in an amount of from 0.005 to 2 wt % of the laundry care composition. 
     
     
         12 . A laundry care composition according to  claim 1  wherein the laundry care adjunct comprises a dye transfer inhibitor selected from the group consisting of:
 (a) polyvinylpyrrolidone polymers; or 
 (b) polyamine N-oxide polymers; or 
 (c) copolymers of N-vinylpyrrolidone and N-vinylimidazole; or 
 (d) polyvinyloxazolidones; or 
 (e) polyvinylimidazoles; or 
 (f) mixtures thereof. 
 
     
     
         13 . A laundry care composition according to  claim 1 , said laundry care composition being a unit dose pouch. 
     
     
         14 . A laundry care composition according to  claim 1  said laundry care composition being a multi-compartment unit dose product. 
     
     
         15 . A laundry care composition according to  claim 1  comprising, based on total laundry care composition weight, a total of no more than 15% water and from 10% to 70% of a water-miscible organic solvent having a molecular weight of greater than 70 Daltons. 
     
     
         16 . A laundry care composition according to  claim 1  comprising, based on total laundry care composition weight, 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. 
     
     
         17 . A method of treating a textile, the method comprising the steps of (i) treating the textile with an aqueous solution comprising a laundry care adjunct and from 1 ppb to 500 ppm of a carboxylate dye; and (ii) rinsing and drying the textile, the dye comprising a dye having a structure of Formula I:
   D-L-CO 2 M  Formula I
   
       wherein D is a dye moiety selected from benzodifuranes, methines, triphenylmethanes, naphthalimides, pyrazoles, naphthoquinones, anthraquinones and mono- and di-azo dyes and mixtures thereof; and L is an organic linking group having a molecular weight from 14 to 1000 Daltons, and in the sequence of bonds starting from the carbonyl carbon of the C(O)OM group and ending at the dye moiety, any —(C a (O)—O b )— groups are incorporated such that the oxygen atom O b  is encountered prior to the carbonyl carbon C a ; and M is any suitable counterion. 
     
     
         18 . A method according to  claim 17  wherein the L group is a C 1-20  alkylene chain having optionally therein ether (—O—) and/or ester and/or amide links, the chain being optionally substituted for example with —OH, —CN, —NO 2 , —SO 2 CH 3 , —Cl, —Br. 
     
     
         19 . A method according to  claim 17  wherein the aqueous solution comprises from 0.05 to 3 g/l of a surfactant.