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Liquid fabric-softening composition
| Details |
Inventors: Blackmore, Eunice S.; Peterson, Gordon C.; Tiddy, Gordon J. T.;
Assignee: Lever Brothers Company (New York, NY)
Primary Examiner:
Assistant Examiner:
Attorney, Agent or Firm:
Aqueous concentrated liquid fabric softening compositions contain at least 10%, such as between 20% and 40%, of a cationic fabric softening agent and at least 0.5%, such as between 10% and 20% of a material which is ##STR1## or ##STR2## where R is C.sub.8 -C.sub.22 alkyl or alkenyl, M is hydrogen or alkalimetal, Y is hydrogen or --CH.sub.2 COOM and X.sup.- is an anion, together with 5-30% of a non aqueous solvent, such as isopropanol. The compositions show good stability without the need for excessive levels of non aqueous solvent. |
|
DETAILED DESCRIPTION We claim: 1.
A liquid concentrated fabric softening composition having both good fabric softening properties and good dispersability/dispensability comprising: (i) at least 15% by weight water; (ii) at least 10% by weight of one or more water-insoluble cationic fabric softening agents; (iii) from 5% to 30% non-aqueous solvent comprising an alcohol selected from the group consisting essentially of C.
sub.
1 -C.
sub.
4 alkanols and polyhydric alcohols and mixtures thereof; (iv) at least 0.
5% of a mixture of two amphoteric surfactants, characterized in that said amphoteric surfactants are materials having the general formula ##STR7## where M is a hydrogen or an alkali metal, and for one such amphoteric surfactant R is an alkyl or alkenyl group having from 8 to 15 carbon atoms and for the other such amphoteric surfactant R is an alkyl or alkenyl group having from 16 to 22 carbon atoms.
2.
A composition according to claim 1, characterised in that it contains from 20% to 60% by weight of said one or more cationic fabric softening agents and from 5% to 30% by weight of said amphoteric surfactants.
3.
A composition according to claim 1, characterised in that the weight ratio of the cationic softening agent to the surfactants lies within the range of 2:1 to 5:1.
4.
A composition according to claim 1, wherein the weight ratio of said amphoteric surfactants to each other is from 1:4 to 4:1.
5.
A liquid concentrated fabric softening composition having both good fabric softening properties and good dispersability/dispensability comprising: (i) at least 15% by weight water; (ii) at least 10% by weight of one or more water-insoluble cationic fabric softening agents; (iii) from 5% to 30% non-aqueous solvent comprising an alcohol selected from the group consisting essentially of C.
sub.
1 -C.
sub.
4 alkanols and polyhydric alcohols, and mixtures thereof; and (iv) at least 0.
5% of a mixture of two amphoteric surfactants, characterised in that said amphoteric surfactants are materials having the general formula ##STR8## where M is a hydrogen or an alkali metal, Y is hydrogen or --CH
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