Laundry Treatment Compositions

Abstract

The present invention provides a treatment composition comprising a hydrophobic dye.

We claim: 
     
         1 . A laundry treatment composition comprising between 0.0001 to 0.1 wt % of a hydrophobic dye selected from benzodifuranes, methine, triphenylmethanes, napthalimides, pyrazole, napthoquinone and mono-azo or di-azo dyes, and between 2 to 60 wt % of a surfactant. 
     
     
         2 . A laundry treatment composition according to  claim 1 , wherein the hydrophobic dye is a disperse or solvent dye. 
     
     
         3 . A laundry treatment composition according to  claim 1  or  2 , wherein the dye is a mono-azo dye. 
     
     
         4 . A laundry treatment composition according to  claim 3 , wherein the mono-azo dye is selected from a compound of the following formula: 
       
         
           
           
               
               
           
         
         wherein R3 and R4 are optionally substituted C2 to C12 alkyl chains having optionally therein ether (—O—) or ester links, the chain being optionally substituted with —Cl, —Br, —CN, —NO 2 , and —SO 2 CH 3 ; and, D denotes an aromatic or hetroaromatic group. 
       
     
     
         5 . A laundry treatment composition according to  claim 4 , wherein R3 is —CH2CH2R5 and R4 and is —CH2CH2R6 and R5 and R6 are independently selected from the group consisting of: H, —CN, —OH, —C6H5, —OCOR7 and —COOR7, wherein R7 is independently selected from: aryl and alkyl. 
     
     
         6 . A laundry treatment composition according to  claim 5 , wherein the aryl is —C6H5 or C10H7. 
     
     
         7 . A laundry treatment composition according to anyone of  claims 4  to  6 , wherein D is selected from the group consisting of: azothiophenes, azobenzothiazoles and azopyridones. 
     
     
         8 . A laundry treatment composition according to  claim 3 , wherein the mono-azo is of the form: 
       
         
           
           
               
               
           
         
         where X and Y are independently selected from the group consisting of: —H, —Cl, —Br, —CN, —NO 2 , and —SO 2 —CH 3 ; 
         A is selected —H, —CH 3 , —Cl, and —NHCOR; 
         B is selected —H, —OCH 3 , —OC 2 H 5 , and —Cl; 
         R 1  and R 2  are independently selected from the group consisting of: —H, —CN, —OH, —OCOR, —COOR, -aryl; and, 
         R is C1-C8-alkyl. 
       
     
     
         9 . A laundry treatment composition according to  claim 1 , wherein the dye is selected from the group consisting of (azo): Disperse blue 10, 11, 12, 21, 30, 33, 36, 38, 42, 43, 44, 47, 79, 79:1, 79:2, 79:3, 82, 85, 88, 90, 94, 96, 100, 201, 102, 106, 106:1, 121, 122, 124, 125, 128, 130, 133, 137, 138, 139, 142, 146, 148, 149, 165, 165:1, 165:2, 165:3, 171, 173, 174, 175, 177, 183, 187, 189, 193, 194, 200, 201, 202, 205, 206, 207, 209, 210, 211, 212, 219, 220, 222, 224, 225, 248, 252, 253, 254, 255, 256, 257, 258, 259, 260, 264, 265, 266, 267, 268, 269, 270, 278, 279, 281, 283, 284, 285, 286, 287, 290, 291, 294, 295, 301, 303, 304, 305, 313, 315, 316, 317, 319, 321, 322, 324, 328, 330, 333, 335, 336, 337, 338, 339, 340, 341, 342, 343, 344, 345, 346, 351, 352, 353, 355, 356, 358, 360, 366, 367, 368, 369, 371, 373, 374, 375, 376 and 378, Disperse Violet 2, 3, 5, 6, 7, 9, 10, 12, 13, 16, 24, 25, 33, 39, 42, 43, 45, 48, 49, 50, 53, 54, 55, 58, 60, 63, 66, 69, 75, 76, 77, 82, 86, 88, 91, 92, 93, 93:1, 94, 95, 96, 97, 98, 99, 100, 102, 103, 104, 106 or 107, Dianix violet cc, and dyes with CAS-No's 42783-06-2, 210758-04-6, 104366-25-8, 122063-39-2, 167940-11-6, 52239-04-0, 105076-77-5, 84425-43-4, and 87606-56-2. 
     
     
         10 . A laundry treatment composition according to  claim 1 , wherein the dye is selected from the group consisting of (non-azo): Disperse Blue 250, 354, 364, 366, Solvent Violet 8, solvent blue 43, solvent blue 57, Lumogen F Blau 650, and Lumogen F Violet 570. 
     
     
         11 . A laundry treatment composition according any one of  claims 1  to  3 , wherein the dye is selected is fluorescent. 
     
     
         12 . A laundry treatment composition according to any preceding claim, wherein the laundry treatment composition comprises from 0.005 to 2 wt % of a fluorescer other than the dye per se. 
     
     
         13 . A laundry treatment composition according to any preceding claim, wherein the dye give a blue or violet shade when deposited on white polyester. 
     
     
         14 . A laundry treatment composition according to any preceding claim, wherein the composition comprises between 0.0001 to 0.1 wt % of one or more other dyes selected from cotton substantive shading dyes of group consisting of: hydrolysed reactive dye; acid dye; and direct dye. 
     
     
         15 . A method of treating a textile, the method comprising the steps of:
 (i) treating a textile with an aqueous solution of a hydrophobic dye as defined in any one of  claims 1  to  10 , the aqueous solution comprising from 1 ppb to 5 ppm of the hydrophobic dye and from 0.2 g/L to 3 g/L of a surfactant; and,   (ii) rinsing and drying the textile.   
     
     
         16 . A method of treating a textile according to  claim 15 , wherein the hydrophobic dye is present in the range 10 ppb to 200 ppb. 
     
     
         17 . A method of treating a textile according to  claim 15  or  16 , wherein the aqueous solution has an ionic strength from 0.001 to 0.5. 
     
     
         18 . A method of treating a textile according to any one of  claims 15  to  17 , wherein the aqueous solution comprises from 1 ppb to 6 ppm one or more other dyes selected from cotton substantive shading dyes of group consisting of: hydrolysed reactive dye; acid dye; and direct dye.