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Molecular Biology

Fabric-conditioning-materials

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Fabric conditioning materials

Details

Inventors: David, John G.;
Assignee: Lever Brothers Company (New York, NY)
Primary Examiner: Willis, Jr.; P. E.
Assistant Examiner:
Attorney, Agent or Firm: Honig; Milton L., Farrell; James J.

Particles for softening fabrics either in a wash liquor or in the rinse, are formed from a liquid mixture comprising water, a cationic material, such as a quaternary ammonium compound, urea and a calcium soap. The particles are formed from the liquid mixture by cooling to a solid and then grinding or by spray cooling. Weathering to form a crisp free flowing powder is optional. The presence of water in the liquid mixture improves the processing of the particles.

DETAILED DESCRIPTION I claim: 1.
A method of producing fabric softening particles characterised by the steps of (i) forming a liquid mixture comprising: (A) from about 4% to about 80% by weight of a cationic fabric conditioning material; (B) from about 10% to about 90% by weight of urea; (C) from about 2% to about 50% by weight of water; and (D) from about 1% to about 50% by weight of an alkaline earth metal salt of a fatty acid having 8-30 carbon atoms, the weight ratio of fatty acid salt to cationic fabric conditioning material being between about 0.
25:1 and about 0.
5:1; and (iii) transforming the liquid mixture so formed into solid particles having a particle size of from about 0.
1 to about 2000 microns.
2.
A method according to claim 1, characterised in that the liquid mixture additionally contains a nonionic surface active agent.
3.
Fabric softening particles characterised in that they have been prepared by a method according to claim 1 or 2.
4.
Fabric softening particles according to claim 3, characterised by containing from about 2% to about 30% by weight of water.
5.
A detergent compatible wash additive product characterized in that it contains at least about 2.
0% by weight of the particles claimed in claim 3.
6.
A detergent composition comprising from about 5% to about 85% by weight of a water-soluble detersive surfactant, with or without a detergency builder, characterized in that is further contains from about 0.
5% to about 30% by weight of the particles claimed in claim 3.
7.
A rinse conditioner characterized by comprising at least about 1% by weight of the particles claimed in claim 3.

Description:
TECHNICAL FIELD This invention relates to fabric conditioning materials and particularly, but not exclusively, to fabric rinse conditioners, detergent compositions or wash addable, detergent compatible compositions which in addition to cleaning effectiveness also have fabric softening properties.
BACKGROUND ART Various quaternary ammonium compounds are known in the art to possess fabric softening properties

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