| 摘要 |
<p>A stabilized opacified detergent composition comprises 100 parts of a surface active agent and 0.2-14 parts (based on the polymer solids) of a cross-linked terpolymer latex which comprises 78-96 parts of styrene or a methylated styrene, 1-20 parts of acrylic, methacrylic or itaconic acids, 1-20 parts of glycidyl acrylate or methacrylate and up to two parts of divinylbenzene (per 100 parts of terpolymer). The composition may contain 3.6-83 parts of an alcohol (per 100 parts of surface active agent). The surface active agent may be sodium dodecyl sulphonate, alkali salts of complex organic phosphate esters, alkyl aryl sulphonates, sodium lauryl (ether sulphates or sulphate), octyl and nonyl phenoxy polyethylenoxy ethanols, polyoxyalkylene ethanols, polyoxyethylene sorbitan fatty acids or fatty acid alkanolamides. In examples opacified liquid detergents comprised (1) nonyl phenol polyethyleneoxyethanol, lauric diethanolamine, sodium alkyl aryl sulphonate, ethyl alcohol, water, dilute H2SO4 to adjust the pH to 7 and the above terpolymer latex; (2) ethyl or isopropyl alcohol, the ammonium salt of the sulphate ester of an alkylphenoxypolyethylenoxy-ethanol, lauric diethanolamide, an alkyl aryl sulphonate, water, dilute H2SO4 to adjust the pH to from 6.5 to 7.5, the above terpolymer latex and optionally nonylphenoxy polyethylenoxy-ethanol; and (3) ethyl alcohol, sodium xylene sulphonate, octyl phenoxy polyethylenoxy-ethanol, lauric diethanolamide, an alkyl aryl sulphonate, water, H2SO4 as in (2) and the above terpolymer latex.ALSO:A cross-linked terpolymer latex comprises 78-96 parts of styrene or a methylated styrene (e.g. vinyl toluene), 1-20 parts of acrylic, methacrylic or itaconic acids, 1-20 parts of glycidyl acrylcate or methacrylate and up to two parts of divinylbenzene (per 100 parts terpolymer). The latex is resistant to coagulation by methanol and may have an average particle size of less than 0.5 micron. The latex may be prepared by adding to an aqueous solution of sodium bicarbonate (as buffer) and the ammonium salt of the sulphate ester of an alkylphenoxypoly(ethyleneoxy)ethanol a catalyst, e.g. ammonium persulphate, and then a first monomer fraction consisting of a major portion of the styrene and the unsaturated acid and all of the divinylbenzene which is then polymerized and followed by a second fraction consisting of the remainder of the styrene unsaturated acid and the glycidyl monomer. The terpolymer may be neutralized, e.g. with diethanolamine or sodium hydroxide.</p> |
