Surface-active oligomers, a process for their preparation and compositions containing them

A hair dye composition comprising in an aqueous, alcoholic or aqueous alcoholic medium an effective amount of a hair dye to dye said hair and a surface-active random oligomer having the formula

• R.sub.1 --O--C.sub.2 H.sub.3 (Z)--O].sub.n H
• wherein
• R.sub.1 represents a linear or branched, saturated or unsaturated aliphatic hydrocarbon radical, a cycloaliphatic radical, an aromatic radical or an alkyl aromatic radical, containing up to 30 carbon atoms,
• Z represents (i) a group having the formula, R.sub.2 O--C.sub.2 H.sub.3 (A)--O].sub.m CH.sub.2 --, or (ii) a mixture of (i) and A, wherein
• A is selected form the group consisting of
• (a) --CH.sub.2 OH, ##STR25## wherein u denotes 0 or 1, ##STR26## wherein R.sub.3 and R.sub.4 each independently represent alkyl or hydroxyalkyl containing 1-3 carbon atoms;
• or R.sub.3 and R.sub.4 together with the nitrogen atom to which they are attached form a heterocycle having 5 or 6 ring members, and u denotes 0 or 1, ##STR27## wherein HV denotes a mineral or organic acid, and u, R.sub.3 and R.sub.4 having the meanings given in (c) above, ##STR28## wherein R.sub.5 represents methyl, ethyl or hydroxyethyl, T.sup..crclbar. denotes an anion, and u, R.sub.3 and R.sub.4 have the meanings given in (c), above, ##STR29## wherein Q.sup..crclbar. represents CH.sub.2 COO.sup.-, CH.sub.2 CH.sub.2 COO.sup.- or (CH.sub.2).sub.3 SO.sub.3.sup.- and R.sub.3 and R.sub.4 have the meanings given in (c), above,
• (g) --OSO.sub.3 M wherein M denotes hydrogen or alkali metal or one equivalent of an alkaline earth metal,
• (h) --OCOCH.sub.2 SO.sub.3 M wherein M has the meaning given in (g), above, and ##STR30## wherein M has the meaning given in (g), above, and u denotes 0 or 1,
• R.sub.2 represents a linear or branched, saturated or unsaturated aliphatic hydrocarbon radical, a cycloaliphatic radical, an aromatic radical or an alkylaromatic radical, containing 8 to 30 carbon atoms,
• n represents an average statistical value ranging from 1 to 20, and
• m represents an average statistical value from 0.5 to 10.

A hair dye composition comprising in an aqueous, alcoholic or aqueous alcoholic medium an effective amount of a hair dye to dye said hair and a surface-active random oligomer having the formula

• R.sub.1 --O--C.sub.2 H.sub.3 (Z)--O].sub.n H
• wherein
• R.sub.1 represents a mixture of C.sub.8 H.sub.17 and C.sub.10 H.sub.21,
• Z represents a mixture of (i) CH.sub.2 OH and (ii) R.sub.2 O--C.sub.2 H.sub.3 (CH.sub.2 OH)--O].sub.m CH.sub.2 -- wherein the ratio of (i):(ii) is 2:1 and R.sub.2 represents a mixture of C.sub.8 H.sub.17 and C.sub.10 H.sub.21,
• n represents an average statistical value of 9, and
• m represents an average statistical value of 0.5.

A hair dye composition comprising in an aqueous, alcoholic or aqueous alcoholic medium an effective amount of a hair dye to dye said hair and a surface-active random oligomer having the formula

• R.sub.1 --O--C.sub.2 H.sub.3 (Z)--O].sub.n H
• wherein
• R.sub.1 represents a linear or branched, saturated or unsaturated aliphatic hydrocarbon radical, a cycloaliphatic radical, an aromatic radical or an alkyl aromatic radical, containing up to 30 carbon atoms,
• Z represents (i) a group having the formula, R.sub.2 O--C.sub.2 H.sub.3 (A)--O].sub.m CH.sub.2 --, or (ii) a mixture of (i) and A, wherein A represents a non-ionic, cationic, anionic, or zwitterionic hydrophilic group,
• R.sub.2 represents a linear or branched, saturated or unsaturated aliphatic hydrocarbon radical, a cycloaliphatic radical, an aromatic radical or an alkyl aromatic radical, containing 8 to 30 carbon atoms,
• n represents an average statistical value ranging from 1 to 20, and
• m represents an average statistical value ranging from 0.5 to 10.