US 5,814,592 AGranted

Non-aqueous, particulate-containing liquid detergent compositions with elasticized, surfactant-structured liquid phase

AssigneeThe Procter & Gamble Company

InventorsJay I. Kahn, Mark A. Smerznak, Axel Meyer, Angela L. Garland, Vincent J. Becks, Jean-Pol Boutique

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Abstract

Disclosed are non-aqueous, particulate-containing liquid laundry detergent compositions which are in the form of a suspension of particulate material, preferably including peroxygen bleaching agent and an organic detergent builder, dispersed in a liquid phase structured with a surfactant and elasticized with finely divided particulate material such as silica or titanium dioxide. Such compositions provide especially desirable cleaning and bleaching of fabrics laundered therewith and also exhibit especially desirable pourability and chemical and phase stability.

Claims18

Dependent claims

A non-aqueous, liquid, heavy-duty detergent in the form of a suspension of solid, substantially insoluble particulate material dispersed throughout a structured, surfactant-containing liquid phase, wherein:

A) said composition comprises from about 45% to 95% by weight of the composition of a structured, surfactant-containing liquid phase formed by combining:
i) from about 50% to 80% by weight of said liquid phase of one or more non-aqueous organic diluents;
and
ii) from about 20% to 50% by weight of said liquid phase of an anionic surfactant-containing powder which is formed by co-drying:
a) one or more alkali metal salts of C.sub.10-16 linear alkyl benzene sulfonic acids;
and
b) one or more non-surfactant salts;
to produce a powder which contains from about 45% to 94% by weight of said powder of said alkyl benzene sulfonic acid salts, from about 2% to 50% by weight of said powder of said non-surfactant salts and from about 0.5% to 4% by weight of said powder of residual water;
and which contains from about 10% to 60% by weight of said powder of a solid phase which is insoluble in said non-aqueous organic diluents;
and
B) said composition also comprises from about 0.1% to 5% by weight of the composition of finely divided, solid particulate material which has an average particle size ranging from about 7 to 40 nanometers and which has a specific surface area ranging from about 40 to 400 m.sup.2 /g;
and
C) said composition also comprises from about 5% to 54.9% by weight of the composition of additional particulate material which ranges in size from about 0.1 to 1500 microns, which is substantially insoluble in said liquid phase and which is selected from peroxygen bleaching agents, bleach activators, organic detergent builders and organic alkalinity sources and combinations of said additional particulate material types.

10 more elements

A non-aqueous, liquid, heavy-duty detergent with bleach composition in the form of a suspension of solid, substantially insoluble particulate material dispersed throughout a structured, surfactant-containing liquid phase, wherein:

A) said composition comprises from about 50% to 70% by weight of the composition of a structured, surfactant-containing liquid phase formed by combining:
i) from about 55% to 75% by weight of said liquid phase of non-aqueous liquids which comprise:
a) an alcohol ethoxylate component comprising C.sub.10 -C.sub.14 alcohols containing from about 3 to 10 moles of ethylene oxide;
and
b) a non-aqueous organic solvent selected from diethylene glycol monobutyl ether, dipropylene glycol monobutyl ether, butoxy-propoxy-propanol and hexylene glycol;
in an alcohol ethoxylate to organic solvent weight ratio of from about 2:1 to 1:2;
and
ii) from about 25% to 45% by weight of said liquid phase of an anionic surfactant-containing powder which is formed by co-drying:
a) sodium C .sub.10-14 linear alkyl benzene sulfonates;
and
b) one or more non-surfactant salts selected from sodium, calcium and magnesium sulfates, citrates, carbonates and xylene sulfonates;
to produce a powder which contains from about 80% to 94% by weight of said powder of said alkyl benzene sulfonic acid salts, from about 2% to 15% by weight of said powder of said non-surfactant salts and from about 0.5% to 4% by weight of said powder of residual water;
and which contains from about 10% to 25% by weight of said powder of a solid phase which is insoluble in said non-aqueous liquids;
B) said composition also comprises from about 0.1% to 2% by weight of the composition of a fumed silica or titanium dioxide structure elasticizing agent having an average particle size ranging from about 7 to 15 nanometers and a specific surface area ranging from about 200 to 400 m.sup.2 /g;
and
C) said composition also comprises from about 10% to 50% by weight of the composition of additional particulate material which ranges in size from about 5 to 200 microns, and which is selected from
i) particles of a peroxygen bleaching agent which is selected from sodium and potassium perborates and percarbonates;
and which is present to the extent of from about 5% to 20% by weight of the composition;
ii) particles of a bleach activator which is selected from nonanoyloxybenzene sulfonate, (6--C.sub.8 -C .sub.10 alkamido-caproyl) oxybenzene sulfonate and tetraacetyl ethylene diamine;
and which is present to the extent of from about 3% to 10% by weight of the composition;
and
iii) particles of alkali metal carbonate;
which is present to the extent of from about 2% to 10% by weight of the composition.

20 more elements

Dependencies are inferred from the claim text.