Patent ID: 6710024
Filing Date: 2004-03-23
Classification: C11D

Abstract:
A detersive composition comprising at leasta) from 0.01 to 50% by weight of a water-soluble or water-dispersible block copolymer A which has a molecular weight of more than 1 000 and at least two polymer blocks characterized by a different monomer composition, wherein the at least two polymer blocks consist of at least one hydrophilic and of at least one hydrophobic block, and is preparable by a process comprising the following steps (i) and (ii): (i) free-radically reacting a reaction mixture comprising at least one free-radically reactive monomer (a) in the presence of at least one free radical of the formula (III) where R1 to R3 are each independently hydrogen, methyl or a group which stabilizes free radicals and/or is bulky and which is selected from the group consisting of substituted or unsubstituted, linear or branched-chain alkyl of two or more carbon atoms, substituted or unsubstituted cycloalkyl radicals, substituted or unsubstituted alcohol radicals, substituted or unsubstituted ether radicals, substituted or unsubstituted polyether radicals, substituted or unsubstituted amine radicals, substituted or unsubstituted aralkyl radicals, substituted or unsubstituted aromatic, heterocyclic or olefinic hydrocarbon, halogen atoms (Hal), substituted or unsubstituted, linear or branched-chain alkenyl or alkynyl groups, â€”C(O)R5, â€”C(O)OR5, â€”CR5R6â€”Oâ€”R7, â€”Oâ€”C(O)R5, â€”CN, â€”Oâ€”CN, â€”Sâ€”CN, â€”Oâ€”C&boxH;NR5, â€”Sâ€”C&boxH;NR5, â€”Oâ€”CR5R6â€”CR7R8NR9R10, â€”N&boxH;C&boxH;O, â€”C&boxH;NR5, â€”CR5R6-Hal, â€”C(S)R5, â€”CR5R6â€”P(O)R7R8, â€”CR5R6â€”PR7R8, â€”CR5R6â€”NR7R8, â€”CR5R6(OR7)(OR8), â€”CR5R6(OR7)(NR8), â€”CR5R6(NR7)(NR8), an acid anhydride, acetal or ketal group, â€”SO2R5, an amidine group â€”NR5C(S)NR6, â€”NR5C(S)â€”OR6, â€”N&boxH;C&boxH;S, â€”NO2, â€”C&boxH;Nâ€”OH, â€”N(R5)&boxH;NR6, â€”PR5R6R7, â€”OSiR5R6R7, and â€”SiR5R6R7, where R5 to R10 are each independently defined as R1 to R3 or two of R1 to R3 form a C4- to C7-ring, which in turn may be substituted or unsubstituted, and may optionally contain one or more heteroatoms, with the proviso that at least two of R1 to R3 are a group, as defined above, --- which stabilizes free radicals and/or is bulky, whereby a product is obtained, which has a molecular weight distribution Mw/Mn, measured by gel permeation chromatography using polystyrene as standard, of &lE;3, and (ii) free-radically reacting the product of step (i) in the presence of at least one free-radically homo- or copolymerizable monomer (b) and b) from 50 to 99.99% by weight of an anionic, cationic, zwitterionic or nonionic surfactant having a molecular weight of less than 1000.