Fabric care method

Abstract

The present invention provides a process for inhibiting the re-absorption of migrating dyes in the wash liquor, comprising introducing into a wash liquor containing a peroxide-containing detergent, from 0.5 to 150, preferably from 1.5 to 75, especially from 7.5 to 40 mg, per litre of wash liquor, of one or more compounds having the formula: in which n is 1, 2 or 3; A is an anion; Y is —(CH 2 ) m in which m is an integer ranging from 1 to 8; —(CH 2 ) p —CH(R 1 )— in which p is an integer ranging from 1 to 7 and R 1 is linear or branched C 1 -C 4 -alkyl, preferably methyl; —CX═CX— in which X is cyano, linear or branched C 1 -C 8 -alkyl or di(linear or branched C 1 -C 8 -alkyl)-amino; —(CH 2 ) q NR 1 —(CH 2 ) q in which R 1 has its previous significance and q is 1, 2, 3 or 4; or a 1,2-cyclohexylene residue having the formula: and R is cyano; halogen; hydroxy; OR 1 in which R 1 has its previous significance; CO 2 R 2 in which R 2 is hydrogen or linear or branched C 1 -C 4 -alkyl; nitro; linear or branched C 1 -C 8 -alkyl; di-(C 1 -C 12 alkyl)amino; NR 3 R 4 in which R 3 and R 4 are the same or different and each is linear or branched C 1 -C 12 -alkyl; or —N ⊕ R 1 R 3 R 4 in which R 1 , R 3 and R 4 have their previous significance.

1 . A process for inhibiting the re-absorption of migrating dyes in the wash liquor, comprising introducing into a wash liquor containing a peroxide-containing detergent, from 0.5 to 150 mg, per litre of wash liquor, of one or more compounds having the formula:  
       
         
           
           
               
               
           
         
         in which n is 1, 2 or 3;  
         A is an anion;  
         R 1  is hydrogen or C 1 -C 4 -alkyl,  
         Y is linear or branched alkylene of the formula —[C(R 1 ) 2 ] m  in which m is an integer ranging from 1 to 8 and each R 1  independently from the others has its previous significance;  
         —CX═CX— in which X is cyano, linear or branched C 1 -C 8 -alkyl or di(linear or branched C 1 -C 8 -alkyl-amino;  
         —(CH 2 ) q —NR 1 —(CH 2 ) q — in which R 1  has its previous significance and q is 1, 2, 3 or 4; or a 1,2-cyclohexylene or phenylene residue having the formula:  
         
           
             
             
                 
                 
             
           
           in which R 7  is hydrogen, CH 2 OH or CH 2 NH 2  or SO 3 M, where M is hydrogen, an alkali metal atom, ammonium or a cation formed from an amine,  
           R and R′ are each independently from the other cyano; halogen; hydroxy; OR 1  or COOR 1  in which R 1  has its previous significance; nitro; linear or branched partially or completely fluorinated C 1 -C 8 -alkyl; NR 3 R 4  in which R 3  and R 4  are the same or different and each is hydrogen or linear or branched C 1 -C 12 -alkyl; —N ⊕ R 1 R 3 R 4  in which R 1 , R 3  and R 4  have their previous significance or linear or branched C 1 -C 8 -alkylene-R 2  in which R 2  is OR 1 , COOR 1  or NR 3 R 4 ,  
           R 5  and R 6  are each independently from the other hydrogen; linear or branched C 1 -C 4 -alkyl; unsubstituted aryl or aryl which is substituted by cyano, halogen, OR 1  or COOR 1 , nitro, linear or branched C 1 -C 8 -alkyl, NR 3 R 4  in which R 3  and R 4  are the same or different and each is hydrogen or linear or branched C 1 -C 12 -alkyl; —N ⊕ R 1 R 3 R 4  in which R 1 , R 3  and R 4  have their previous significance or linear or branched C 1 -C 8 -alkylene-R 2  in which R 2  is OR 1 , COOR 1  or NR 3 R 4 ,  
           with the proviso that each n is 1, if R and R′ are both C 1 -C 4 -alkyl.  
         
       
     
     
         2 . A process according to  claim 1  in which from 1.5 to 75 mg, per litre of wash liquor, of one or more compounds having the formula (1) or (2) is introduced into the wash liquor.  
     
     
         3 . A process according to  claim 2  in which from 7.5 to 40 mg, per litre of wash liquor, of one or more compounds having the formula (1) or (2) is introduced into the wash liquor.  
     
     
         4 . A process according to  claim 1  in which the anion A is halide, perchlorate, sulphate, nitrate, hydroxide, BF 4   − , PF 6   −  or a carboxylate.  
     
     
         5 . A process according to  claim 4  in which the halide anion A is chloride.  
     
     
         6 . A process according to  claim 4  in which the carboxylate anion A is acetate, triflate or tosylate.  
     
     
         7 . A process according to  claim 1  in which Y is —[C(R 8 ) 2 ] 2  wherein R 8  is hydrogen or methyl, —CX═CX— in which X is cyano, —(CH 2 ) q —NR 8 —(CH 2 ) q — in which R 8  has its previous significance and q is 1, 2, 3 or 4; or a 1,2-cyclohexylene or phenylene residue having the formula:  
       
         
           
           
               
               
           
         
       
     
     
         8 . A process according to  claim 1  in which R and R′ are dimethylamino, diethylamino, hydroxy, methoxy, ethoxy, chloro or nitro.  
     
     
         9 . A process according to  claim 1  in which when n is 1, the group R or R′ is in the 4-position of the respective benzene ring, with the exceptions that when R or R′ is nitro or CO 2 R 2 , the group R or R′ is in the 5-position of the respective benzene ring.  
     
     
         10 . A process according to  claim 1  in which when n is 2, the groups R or R′ are in the 4,6-positions of the respective benzene ring, with the exceptions that when R or R′ is nitro or CO 2 R 2  the groups R or R′ are in the 3,5-positions of the respective benzene ring.  
     
     
         11 . A process according to  claim 1  in which R or R′ is di-(C 1 -C 12 alkyl)amino, preferably di-(C 1 -C 8 alkyl)amino.  
     
     
         12 . A process according to  claim 11  in which the alkyl moiety in the group di-(C 1 -C 12 alkyl)amino contains from 1 to 4 carbon atoms.  
     
     
         13 . A process according to  claim 12  in which the alkyl moiety in the group di-(C 1 -C 12 alkyl)amino contains 1 or 2 carbon atoms.  
     
     
         14 . A process according to  claim 1  in which the compound of formula (1) is one or more of the compounds of formulae:  
       
         
           
           
               
               
           
         
       
     
     
         15 . A detergent composition comprising: 
 i) 5-90% of A) an anionic surfactant and/or B) a nonionic surfactant;    ii) 5-70% of C) a builder;    iii) 0.1-30% of D) a peroxide; and    iv) 0.005-2% of E) a compound of formula (1) or (2) as defined in  claim 1 , each by weight, based on the total weight of the detergent.    
     
     
         16 . A composition according to  claim 15  comprising: 
 i) 5-70% of A) an anionic surfactant and/or B) a nonionic surfactant;  
 ii) 5-50% of C) a builder;  
 iii) 1-12% of D) a peroxide; and  
 iv) 0.02-1% of E) a compound of formula (1) or (2) as defined in  claim 1 , each by weight, based on the total weight of the detergent.  
 
     
     
         17 . A composition according to  claim 16  comprising: 
 i) 5-70% of A) an anionic surfactant and/or B) a nonionic surfactant;  
 ii) 5-40% of C) a builder;  
 iii) 1-12% of D) a peroxide; and  
 iv) 0.1-0.5% of E) a compound of formula (1) or (2) as defined in  claim 1 , each by weight, based on the total weight of the detergent.  
 
     
     
         18 . A composition according to  claim 15  comprising a combination of two or more of the compounds of formula (1) or (2) as defined in  claim 1 .  
     
     
         19 . A composition according to  claim 15  comprising 0.5-5% by weight of a polymer useful in preventing the transfer of labile dyes between fabrics during a washing cycle.  
     
     
         20 . A composition according to  claim 19  comprising 0.2-1.7% of the polymer.  
     
     
         21 . A composition according to  claim 19  in which the polymer is a polyvinylpyrrolidone optionally containing an anionic or cationic substituent.  
     
     
         22 . A composition according to  claim 15  in which the detergent is in powder or granulate form.  
     
     
         23 . A composition according to  claim 15  in which the detergent is in liquid form and contains 0-5% water.  
     
     
         24 . A composition according to  claim 23  in which the detergent is in liquid form and contains 0-1% water.  
     
     
         25 . A composition according to  claim 15 , containing additionally TAGU or TAED:  
     
     
         26 . A process for the production of a detergent as claimed in  claim 22  in which the components of the detergent are mixed in dry form.  
     
     
         27 . A process for the production of a detergent as claimed in  claim 22  in which a base powder is produced by spray-drying an aqueous slurry which contains all the components defined in  claim 22 , apart from the components D) and E); and then adding the components D) and E) by dry-blending them into the base powder.  
     
     
         28 . A process for the production of a detergent as claimed in  claim 22  in which the component E) is added to the slurry containing components A), B) and C), which slurry is then spray-dried before component D) is dry-blended into the mixture.  
     
     
         29  A process for the production of a detergent as claimed in  claim 22  in which component B) is not present, or is only partly present in a slurry containing components A) and C); the component E) is incorporated into component B), which is then added to the spray-dried base powder; and finally component D) is dry-blended into the mixture.  
     
     
         30 . Manganese complexes of formula (3)  
       
         
           
           
               
               
           
         
       
       or of formula (2)  
       
         
           
           
               
               
           
         
         in which n is 1, 2 or 3;  
         A is an anion;  
         R and R′ are each independently from the other cyano; halogen; hydroxy; OR 1  or COOR 1  in which R 1  has its previous significance; nitro; linear or branched partially or completely fluorinated C 1 -C 8 -alkyl; NR 3 R 4  in which R 3  and R 4  are the same or different and each is hydrogen or linear or branched C 1 -C 12 -alkyl; —N ⊕ R 1 R 3 R 4  in which R 1 , R 3  and R 4  have their previous significance or linear or branched C 1 -C 8 -alkylene-R 2  in which R 2  is OR 1 , COOR 1  or NR 3 R 4 ,  
         R 1  is hydrogen or C 1 -C 4 -alkyl,  
         Y 1  is —CX═CX— in which X is cyano, —(CH 2 ) q —NR 1 —(CH 2 ) q — in which R 1  has its previous significance and q is 1, 2, 3 or 4; linear or branched alkylene of the formula —[C(R 1 ) 2 ] m  in which m is an integer ranging from 1 to 8 and each R 1  independently from the other has its previous significance, with the proviso that at least one R 1  is C 1 -C 4 -alkyl; or a 1,2-cyclohexylene or phenylene residue having the formula:  
         
           
             
             
                 
                 
             
           
         
         in which R 7  is hydrogen, CH 2 OH or CH 2 NH 2  or SO 3 M, where M is hydrogen, an alkali metal atom, ammonium or a cation formed from an amine, with the proviso that each n is 1 if R and R′ are both C 1 -C 4 -alkyl and Y 1  is an unsubstituted 1,2-cyclohexylene residue, Y is linear or branched alkylene of the formula —[C(R 1 ) 2 ] m  in which m is an integer ranging from 1 to 8 and each R 1  independently from the other has its previous significance; —CX═CX— in which X is cyano, linear or branched C 1 -C 8 -alkyl or di(linear or branched C 1 -C 8 -alkyl)-amino;  
         —(CH 2 ) q ,NR 1 —(CH 2 ) q —in which R 1  has its previous significance and q is 1, 2, 3 or 4; or a 1,2-cyclohexylene or phenylene residue having the formula:  
         
           
             
             
                 
                 
             
           
         
         in which R 7  is hydrogen, CH 2 OH or CH 2 NH 2  or SO 3 M, where M is hydrogen, an alkali metal atom, ammonium or a cation formed from an amine,  
         R 5  and R 6  are each independently from the other hydrogen; linear or branched C 1 -C 4 -alkyl; unsubstituted aryl or aryl which is substituted by cyano, halogen, OR 1  or COOR 1 , nitro, linear or branched C 1 -C 8 -alkyl, NR 3 R 4  in which R 3  and R 4  are the same or different and each is hydrogen or linear or branched C 1 -C 12 -alkyl; —N ⊕ R 1 R 3 R 4  in which R 1 , R 3  and R 4  have their previous significance or linear or branched C 1 -C 8 -alkylene-R 2  in which R 2  is OR 1 , COOR 1  or NR 3 R 4 .  
       
     
     
         31 . Compounds of the formula (4)  
       
         
           
           
               
               
           
         
       
       or of formula (5)  
       
         
           
           
               
               
           
         
         in which n is 1, 2 or 3;  
         R and R′ are each independently from the other cyano; halogen; hydroxy; OR 1  or COOR 1  in which R 1  has its previous significance; nitro; linear or branched partially or completely fluorinated C 1 -C 8 -alkyl; NR 3 R 4  in which R 3  and R 4  are the same or different and each is hydrogen or linear or branched C 1 -C 12 -alkyl; —N ⊕ R 1 R 3 R 4  in which R 1 , R 3  and R 4  have their previous significance or linear or branched C 1 -C 8 -alkylene-R 2  in which R 2  is OR 1 , COOR 1  or NR 3 R 4 ,  
         R 1  is hydrogen or C 1 -C 4 -alkyl,  
         Y 1  is —CX═CX— in which X is cyano, —(CH 2 ) q —NR 1 —(CH 2 ) q — in which R 1  has its previous significance and q is 1, 2, 3 or 4; linear or branched alkylene of the formula —[C(R 1 ) 2 ] m  in which m is an integer ranging from 1 to 8 and each R 1  independently from the other has its previous significance, with the proviso that at least one R 1  is C 1 -C 4 -alkyl; or a 1,2-cyclohexylene or phenylene residue having the formula:  
         
           
             
             
                 
                 
             
           
         
         in which R 7  is hydrogen, CH 2 OH or CH 2 NH 2  or SO 3 M, where M is hydrogen, an alkali metal atom, ammonium or a cation formed from an amine, with the proviso that each n is 1 if R and R′ are both C 1 -C 4 -alkyl and Y 1  is an unsubstituted 1,2-cyclohexylene residue,  
         Y is linear or branched alkylene of the formula —[C(R 1 ) 2 ] m  in which m is an integer ranging from 1 to 8 and each R 1  independently from the other has its previous significance; —CX═CX— in which X is cyano, linear or branched C 1 -C 8 -alkyl or di(linear or branched C 1 -C 8 -alkyl)-amino;  
         —(CH 2 ) q —NR 1 —(CH 2 ) q — in which R 1  has its previous significance and q is 1, 2, 3 or 4; or a 1,2-cyclohexylene or phenylene residue having the formula:  
         
           
             
             
                 
                 
             
           
         
         in which R 7  is hydrogen, CH 2 OH or CH 2 NH 2  or SO 3 M, where M is hydrogen, an alkali metal atom, ammonium or a cation formed from an amine,  
         R 5  and R 6  are each independently from the other hydrogen; linear or branched C 1 -C 4 -alkyl; unsubstituted aryl or aryl which is substituted by cyano, halogen, OR 1  or COOR 1 , nitro, linear or branched C 1 -C 8 -alkyl, NR 3 R 4  in which R 3  and R 4  are the same or different and each is hydrogen or linear or branched C 1 -C 12 -alkyl; —N ⊕ R 1 R 3 R 4  in which R 1 , R 3  and R 4  have their previous significance or linear or branched C 1 -C 8 -alkylene-R 2  in which R 2  is OR 1 , COOR 1  or NR 3 R 4 .  
       
     
     
         32 . Compounds of the formula