US 5,340,492 A · Shaped solid made with a rigid, interlocking mesh of neutralized carboxylic acid

Abstract

The invention provides a shaped solid, three-dimensional skeleton structure comprising: a relatively rigid, interlocking mesh of neutralized crystalline carboxylic acid. In another respect, the present invention provides an improved cleansing bar which is comprised of the rigid, interlocking mesh of neutralized carboxylic acid, preferably sodium soap fibers. Such preferred cleansing bars can be formulated to have essentially no bar smear. Some cleansing bars comprise surprisingly large amounts of water and other liquids while maintaining their rigidity and excellent smear properties; even when allowed to soak overnight in water.

Claims21

Dependent claims

A personal cleansing bar composition comprising a rigid, crystalline interlocking mesh of elongated sodium soap crystals;

said soap bar comprising:
from about 15% to about 50% sodium fatty acid soap composed of at least about 50% saturated fatty alkyl chains having 12-24 carbon atoms of which at least about 25% of said saturated fatty alkyl chains is of a single chain length;
from about 15% to about 60% water;
and from about 2% to about 60% by weight of a hygroscopic synthetic surfactant wherein said hygroscopic synthetic surfactant is selected from surfactants which absorb at least about 20% of their dry weight in water at 26.degree. C. and 80% Relative Humidity in three days.

1 more element

A cleansing bar composition comprising at least two phases;

an aqueous phase having a penetration value of 12 mm for a 12 mm deep sample, said aqueous phase being soft or flowable at 25.degree. C.;
a rigid crystalline phase skeleton structure comprising an interlocking, open three-dimensional mesh of neutralized mono- and/or di-carboxylic acid elongated crystals;
wherein said cleansing bar comprising said rigid crystalline phase skeleton structure and said aqueous phase has a penetration value of from zero to about 12 mm for a 25 mm deep sample of said cleansing bar;
wherein said penetration values are measured as 25.degree. C. using a 247 gram Standard Weighted Penetrometer Probe having a conical needle attached to a 9 inch (22.9 cm) shaft, weighing 47 grams with 200 grams on top of said shaft for a total of said 247 grams, said conical needle having a 19/32 inch (1.51 cm) top and a 1/32 inch (0.08 cm) point;
and
wherein said neutralized carboxylic acid is selected from the group consisting of lithium and/or sodium neutralized;
monocarboxylic acid and/or dicarboxylic acid;
and mixtures thereof;
wherein said monocarboxylic acid has a fatty alkyl chain of from about 12 to about 24 carbon atoms;
wherein at least about 80% of said carboxylic acid has saturated alkyl chains;
wherein said rigid crystalline phase skeleton structure occupies from about 3% to about 75% of said cleansing bar by volume;
and
wherein said neutralized carboxylic acid comprises from over 5% to about 75% by weight of said cleansing bar;
and
wherein said cleansing bar contains from about 15% to about 94% water.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application

07/782,956Filed 1 Nov 1991 · continuation in part

Priority

26 Nov 1990

Granted

23 Aug 1994

Term ends

Not estimatedThe source records don’t support an estimate.

Classification22 codes

C11D 17/006
Detergents in the form of bars or tablets: containing mainly surfactants, but no builders, e.g. syndet bar
C11D 1/04
Anionic compounds: carboxylic acids or salts thereof
C11D 1/08
Carboxylic acids or salts thereof: polycarboxylic acids containing no nitrogen or sulfur
C11D 10/04
Compositions of detergents, not provided for by one single preceding group: based on mixtures of surface-active non-soap compounds and soap

Shaped solid made with a rigid, interlocking mesh of neutralized carboxylic acid

Life of this patent

Shaped solid made with a rigid, interlocking mesh of neutralized carboxylic acid

Life of this patent

Abstract

Claims21