SULFOSUCCINATE DETERGENT COMPOSITION
BACKGROUND OF THE INVENTION
1. Field of the Invention:
The Invention is a detergent composition containing a sulfosuccinate an alkyl polyglycoside, an alkal imetal chloride and water. The detergent composition has improved foair properties and increased viscosity.
2. Statement of the Related Art:
Sulfosuccinate surfactants are a class of surfartants which are known to possess excellent surfactant properties and low irritation potential. However, the liquid compositions have weak foaming properties and low viscosity. In many applications high foam properties and high viscosity are required.
It is known that the foaming properties and viscosity of sulfosuccinate surfactants can be improved by addition of certain anlonlc surfactants to the sulfosuccinate containing composition. However, the additives used to Improve the foaming characteristics and increase viscosity generally adversely affect the mildness or non-i rritating properties of the sulfosuccinate surfactants.
U.S. patents 4,784,800, U.S. 4,732,707, U.S. 4,734,223 and U.S. 4,596,672 disclose formulations containing sulfosuccinate surfactants, anionic and/or non-anionic surfactants to improve the foam and viscosity properties of the composition. However, the additional surfactants generally Increase the irritation propensity of the composition.
U.S. patent 4,576,744 discloses a composition containing a
sulfosuccinate surfactant and a viscosity increasing amount of certain water soluble polymers. In many applications, water soluble polymers have an adverse effect on the desired detergent properties of the composition.
A BRIEF DESCRIPTION OF THE INVENTION
Other than in the operating examples and claims, or where otherwise indicated, all numbers expressing quantities of Ingredients or reaction conditions used herein are to be understood as modified in all Instances by the term "about".
The present invention is based on the discovery that a surfactant composition comprising a sulfosuccinate surfactant in combination with an aliphatic polyglycoside surfactant, alkali metal chloride and water provides improved foam properties and Increased viscosity without unduly adversely effecting the mildness or non irritating properties of the composition.
According to the present invention a detergent composition comprises: a) a sulfosuccinate of the formula
I
wherein x is -CH2CH-;
M is solubilizing cation selected from alkali metal, alkaline earth metal, ammonium and
R3, R4 and R5 are Independently H, alkyl having from 1 to about 4 carbon atoms and hydroxyalkyl having from 1 to about 4 carbon atoms, and n is the valence of M;
R1 is R6O(CH2CH2O)m wherein R6 is alkylphenol, alkyl, alkenyl, hydroxy alkyl or hydroxyalkenyl group each having from about 3 to about 24 carbon atoms and m is a number of from 0 to about 10,
0 H
R7 C-N
(CH2CH2O
rn wherein
R7 is an alkyl, alkenyl, hydroxyalkyl, hydroxy alkenyl or alkylphenyl each having from about 2 to about 23 carbon atoms;
R2 is M or R1 with the proviso that when
n
R2 is R1 the sum of the number of carbon atoms in R2 and R1 is from about 7 to about 24 and when R2 is M the number
n
of carbon atoms in R1 is from about 8 to about 24; b) an aliphatic polyglycoslde of the formula
RO
(CH2CH2O
)mGr ( I I) wherei n R is an
alkyl or alkenyl group having from about 8 to about 22 carbon atoms, m is as defined above, G is the residue of a reducing saccharlde and r is a number of from about 1.05 to about 10; c) an alkali metal chloride; and
d) water; wherein the ratio by weight of b) to a) is above about
DETAILED DESCRIPTION OF THE INVENTION
The sulfosuccinate compositions useful in the practice of the present invention according to the formula I encompass compounds such as disodium ethoxylated nonylphenol half ester of sulfosuccinic acid, disodium isodecyl sulfosuccinate, sodium diamyl sulfosuccinate, sodium dioctyl sulfosuccinate, sodium di-isobutyl sulfosuccinate, sodium dihexyl sulfocucdnate, disodium N-octadecylsulfosuccinate, disodium cocamide MIPA sulfosuccinate, di- sodium lauran de monoethanolamine sulfocucdnate, disodium laureth sulfosuccinate, disodium decyl-PEG-4 sulfosuccinate, disodium lauryl sulfosuccinate, sodium sulfosuccinate ester of lauMc diethanolamide, sodium sulfosuccinate ester of lauric monoethanolamide, disodium oleylamido PEG-2 sulfosuccinate, sodium N-octa- decyl sulfosucdπamate, mixed fatty amine sulfosuccinate, disodiummonococoamide sulfosuccinate, disodium monooleamide sulfosuccinate, ethoxylated lanolin alcohol sulfosuccinate, disodium laureth-5 sulfosuccinate, dianmonium lauramido MEA sulfosuccinate, disodium lauramido MEA sulfosuccinate, diaim-onium lauryl sulfosuccinate, disodium trldecyl sulfosuccinate, disodium undecylene amido monoethanolamine sulfosuccinate, disodium cocamido monoethanolamine sulfosuccinate, disodium N-octadecyl suifosuccinamate, diammonium N-octyldecyl ulfosuccinamate, disodium oleamido MIPA sulfosuccinate. The above are examples of typical sulfosuccinate compositlons which are useful in the practice of the present invention. Generally, the sulfosuccinate surfactants are present in the com
position in a concentration range of from about 1 to about 20% by weight of the detergent composition.
The aliphatic polyglycoside surfactants useful in the practice of the present Invention are nonionic surfactants of the formula RO(CH2CH2O)mGr wherein R is an alkyl or alkylenyl group having from about 8 to about 22 carbon atoms and preferably from about 10 to about 18 carbon atoms.
The aliphatic group can be alkyl or alkylenyl but is preferably alkyl. In the formula, m is a number of from about 0 to 10 and preferably 0. G is the residue of a reducing saccharide and r is a number of from about 1.05 to about 10 and preferably from about 1.1 to about 2.
The aliphatic polyglycosides are known composition and can be prepared by the method disclosed in U.S. 4,713,447 which is Incorporated herein by reference.
The saccharides useful for preparing the aliphatic polyglycosides useful in the practice of the present invention are reducing monosaccarides or materials which can form reducing monosaccarides during the process for preparing the polyglycoside composition. The reducing saccharides Include hexoses and pentoses. Typical examples of suitable monosaccharides Include glucose, manose, galactose, talose, allose, altrose, idose, arabinose, xylose, ribose, lyxose, and the like. More for reasons of Its low cost and ready availability, glucose is the prefered saccharide. The aliphatic polyglycosides are present in the composition of the present Invention in the range of from about 1 to about 25% by weight of the composition, preferably from about 3-20%.
The ratio of aliphatic polyglcoslde to sulfosuccinate is at least about 1:3, preferably higher than about 2:3 and most preferably higher than 1:1 and less than about 4:1.
The compositions of the present invention contain a small but viscosity Increasing effective amount of an alkali metal chloride. The alkali metal chlorides include lithium chloride, sodium chloride and potassium chloride. The alkali metal chlorides are included in the composition of the present invention in a viscosity improving effective amount. Generally, the amount of alkali metal chloride in the composition of the present invention ranges from about 0.1 to about 10% by weight of the composition. The amount of the alkali metal chloride present in the composition is dependent upon the ratio of aliphatic polyglycoside to the sulfosuccinate surfactant in the composition and the viscosity required. The preferred alkali metal chlorides are sodium chloride and potassium chloride.
The composition of the present invention can contain up to about 40% by weight of other additives usually present in detergent compositions. The composition can contain additional surfactant, additional foam boosters such as alkylamides, pH adjusters and buffers such as citric add, re-fatting agents such as CETIOL, fragrances, and other materials which are generally found in detergent compositions especially mild detergent compositions which are directed to providing an emollient and enhanced conditioning action for the skin.
A typical liquid hand soap composition of the present invention is as follows:
Percent
by
Weight
Standapol SH-124-3(1) 2.5
Texapon ASV (2) 2.5
CETIOL HE(3) 2
Al kyl polygl ucoside (AP 600 SP) (4) 5
NaCl 2 ci tri c acid 0.1 fragrance 0.05 preservative 0.05 water 75.8
(1) Standapol SH-124-3 is disodium laureth sulfosuccinate with three mols of ethylene oxide.
(2) TEXAPON ASV is an alkyl ether sulfate.
(3) CETIOL HE is a polyol fatty add ester.
(4) APG®600 SP is a lauryl polyglucoside with a degree of polymerization of 1.4.
Another exemplary formulation is as fol lows:
Percent
by
Weight
STANDAPOL SH-124-3 13
(disodium laureth sulfosuccinate (3PEG) lauryl polyglucoside (APG®600 SP) 15
LANEPON S 9
(potassium coco-hydrolyzed animal protein)
STANDAMIO LDO 3.0
(lauramide DEA)
STADAMOX LAO-30 3.0
(lauramine oxide)
CETIOL HE 0.5
(PEG7 glyceryl cocoate) KATHON CG 0.05
(preservative) sodium chloride 2 fragrance and dyes as required water to provide 100 The pH of the formulation is adjusted to about 6 with citric add.
The above formulation can be used as a bath and body shampoo.
Advantages of the present invention wi l l be i l l ustrated by way of the fol lowing examples. A test formula was prepared containing the fol lowing:
Total surfactant 12.0% acti ve i ngredi ents cocamide DEA 3.0%
ci tri c add to pH 6.5
water bal ance
The formulations were prepared and the surfactant adjusted by substituting for a portion of the surfactant the aliphatic polyglycosides useful in the practice of the present invention.
A 10% aqueous solution of the composition to be evaluated was prepared. Four (4) grams of the 10% aqueous solution were added to
146 grams of water (hardness 50 ppm) heated to 29 °C ± 1 °C.
The mixture was agitated for (10) seconds in an osterlzer type blender. The agitation was medium speed. The contents of the blender were transferred into a 500 millillter graduated cylinder.
The Initial foam volume was measured to the nearest 5 ml. The position of the foam/water Interface was recorded after 3.5 minutes. The position of the interface indicates the foam drainage or the stability of the foam. The foam drainage should be as low as possible. The results of the experiment are shown in Table
I.
Foam generation 240( 1)/135 (2) 245/135 265/135 265/130
(1) Milliliters of foam after mixing for 10 seconds
(2) Interface (miliiliters) after 3.5 minutes
(3) APG-ROGr wherein R is C12-14 alkyl, G is glucose residue, r is 1.4
(4) Laureth PEG3 disodium sulfosuccinate.
As can be seen from the data in Table I, the addition of a small amount of alkali metal chloride and substitution of an aliphatic polyglycoside for a portion of the sulfosuccinate provides for increased viscosity and an increase in the amount of foam and the foam stability of the composition.
The use of aliphatic polyglycosides and in particular alkyl polyglucoside are particularly useful since they are ecologically safe and biodegradeable, exhibit very low levels of toxicity, contain no nitrosoamines or 1,4 dioxane and can be made from renewable natural resources.
As is well known in the art, the sulfosuccinate esters suffer from hydrolysis during storage. There is some Indication that the aliphatic polyglycosides Improve the stability of the sulfosuccinates useful in the practice of the present invention. As can be seen from the data presented, the compositions of the present Invention have improved foam stability, increased viscosity with no substantial adverse effect on the mildness or Irritation potential of the composition.
As shown in the examples the pH of the compositions are adjusted in the range of about 6 to about 8 to reduce the hydrolysis potential of the sulfosucdnates.