Patent ID: 6288019
Filing Date: 2001-09-11
Classification: C11D

Abstract:
A microemulsion cleaning composition comprising approximately by weight:(a) 0.1 wt. % to 8% of an anionic selected from the group consisting of sulfonated surfactants and sulfated surfactants;(b) 0.5% to 6% of an ethoxylated/propoxylated nonionic surfactant;(c) 0.5% to 8% of a short chain amphiphiles formed from the condensation product of an alkanol, and ethylene oxide wherein said short chain amphiphile has the formula:R.sub.1 O--(CH.sub.2 CH.sub.2 O).sub.n Hwherein R.sub.1 is a straight or branched chain alkyl group having 5 to 8 carbon atoms and n is a number from 2 to 8;(d) 0.05% to 2% of a fatty acid;(e) 0.25% to 6% of magnesium sulfate;(f) 0.1 to 5% of a water insoluble hydrocarbon, essential oil or a perfume;(g) 0.05% to 2% of a sodium salt of an olefin maleic acid copolymer; and(h) the balance being water wherein the composition does not contain triethyl phosphate, an aliphatic mono or di-carboxylic acid having 2 to 10 carbon atoms, mixtures of partially esterified ethoxylated polyhydric alcohol, a fully esterified ethoxylated polyhydric alcohol and a nonesterified ethoxylated polyhydric alcohol, polyesterified nonionic compounds, a water-soluble polyethylene glycol having a molecular weight of 150 to 1000, polypropylene glycol of the formula HO(CH.sub.3 CHCH.sub.2 O).sub.n H wherein n is a number from 2 to 18, mixtures of polyethylene glycol and polypropylene glycol and mono and di C.sub.1 -C.sub.4 alkyl ethers and esters of ethylene glycol and propylene glycol having the structural formulas R(X).sub.n OH, R.sub.1 (X).sub.n OH, R(X).sub.n OR and R.sub.1 (X).sub.n OR.sub.1 wherein R is C.sub.1 -C.sub.6 alkyl groups, R.sub.1 is C.sub.2 -C.sub.4 acyl group, X is (OCH.sub.2 CH.sub.2) or (OCH.sub.2 (CH.sub.3)CH) and n is a number from 1 to 4, diethylene glycol, triethylene glycol, an alkyl lactate, wherein the alkyl group has 1 to 6 carbon atoms, 1-methoxy-2-propanol, 1-methoxy-3-propanol, and 1-methoxy-2-, 3-, or 4-butanol. Also excluded from the instant microemulsion and all purpose cleaning compositions are grease release agents characterized by the formula: ##STR5##wherein R.sub.1 is a methyl group and R.sub.2, R.sub.3, and R.sub.4 are independently selected from the group consisting of methyl, ethyl, and CH.sub.2 CH.sub.2 Y, wherein Y is selected from the group consisting of Cl, Br, CO.sub.2 H, (CH.sub.2 O).sub.n OH wherein n=1 to 10, OH, CH.sub.2 CH.sub.9 OH and x is selected from the group consisting of Cl, Br, methosulfate ##STR6##and HCO.sub.3.sup.- Also excluded from the instant microemulsion or all purpose cleaning compositions are grease release agents which are an ethoxylated maleic anhydride-alpha olefin copolymer having a comb-like structure with both hydrophobic and hydrophilic chains and is depicted by the formula: ##STR7##wherein n is about 5 to about 14, x is about 7 to 19, and y is of such a value as to provide a molecular weight about 10,000 to about 30,000.