The Lion Fat and Oil Co. Ltd.

Lion Corporation

Kazuo Ohbu

Nobuo Johna

Naoki Mizushima

Masuzo Nagayama

Osamu Okumura

Nobuyuki Miyajima

Takenobu Sakatani

Ichiro Kashiwa

Masahiro Fukuda

Mitsuharu Kachi

Teruo Horiuchi

Shigemi Nakamura

Nobuo Jona

Yuichi Takada

Toshio Takagi

A method for separating and purifying a biomembrane protein from biomembrane by subjecting the biomembrane to gel electrophoresis in the presence of at least one anionic surfactant having the general formula (I):

Separation and purification of biomembrane proteins

The invention provides a novel and improved method for the preparation of a highly concentrated aqueous dispersion of a pearlescent agent, which is typically an ethyleneglycol di(fatty acid) ester, capable of forming very thin leaf crystals exhibiting pearlescence to be used for imparting pleasant appearance to detergents, toiletries, such as hair shampoos, hair rinses and others, and the like admixed therewith. The method is performed by solubilizing the pearlescent agent in an aqueous solution of a surfactant, at least a substantial amount thereof being in the state of middle phase liquid crystals, at or above the melting point of the pearlescent agent and succeedingly cooling the above obtained mixture to room temperature whereby to crystallize the pearlescent agent in situ while the state of the middle phase liquid crystals of the surfactant is kept substantially unchanged.

Method for the preparation of an aqueous dispersion of pearlescent agent

A detergent composition, suitable for use in washing vegetables and dishes and shampooing human hair, having both good detergency and little hand roughening action is presented. This detergent composition contains:

Detergent composition

A production process of a liquid detergent composition having both good detergency and little hand roughening action is presented. This liquid detergent composition can be produced by mixing an anionic surface active agent and a semi-polar nonionic surface active agent, each in the stage of an aqueous solution, and then, adding a specified arylsulfonic acid to this mixture in such a manner that the produced liquid detergent composition contains 6 to 25% by weight of the anionic surface active agent, 2 to 8% by weight of the semi-polar nonionic surface active agent and 0.2 to 3.0% by weight of the arylsulfonic acid.

Process for producing liquid detergent composition

A liquid detergent composition which comprises an anionic surface active agent of polyoxyalkylene alkyl ether sulfate type and a cationic surface active agent of mono-long chain alkyl quaternary ammonium salt type at a mol ratio of the former to the latter in the range of from 8:1 to 1:1 is not only mild to the human skin but also capable of demonstrating superb detergency.

Liquid detergent compositions

A liquid detersive bleaching composition which comprises 3 to 10 wt.% of sodium hypochlorite (in terms of the amount of available chlorine), 0.5 to 3 wt.% of caustic alkali, 0.3 to 7 wt.% of polyoxyethylene alkylphenyl ether sulfate (a) having the formula (I) and 0.1 to 5 wt.% of polyoxyethylene alkylphenyl ether sulfate sulfonate (b) having the formula (II), wherein the molar ratio of (a) to (b) is in the range of from 20/80 to 85/15 and the total amount of (a) and (b) is in the range of from more than 0.5 wt.% to less than 10 wt.%.

Liquid detersive bleaching composition

A neutralized product containing salt of .alpha.-sulfofatty acid ester in high concentration can be produced by the method comprising the steps of (1) sulfonating fatty acid ester by contacting a gaseous mixture of sulfur trioxide (SO.sub.3) and an inert gas containing 1 - 15% by volume of SO.sub.3 with a film of a fatty acid ester, said ester having the formula RCH.sub.2 COOR' (wherein R is alkyl having 8 - 18 carbon atoms and R' is alkyl having 1 - 5 carbon atoms), under the conditions that the molar ratio of SO.sub.3 to said fatty acid ester is in the range of 1.0 - 1.5, the temperature is in the range of 50.degree. - 85.degree.C and the time of contact is in the range of 0.5 - 30 seconds; (2) contacting a film of the reaction product obtained by step (1) into contact with said gaseous mixture, under the conditions of a temperature in the range of 95 - 150.degree.C and a time of contact in the range of 3 - 120 seconds; and (3) instantly neutralizing the reaction product obtained by step (2) with a base selected from the group consisting of an aqueous solution of alkali metal hydroxide, ammonia water and ethanol amine while retaining the condition that the pH value is in the range of 6 - 10 and the temperature is less than 70.degree.C. This neutralized product is usable as the active ingredient a detergent without subjecting it to any further treatment.

Method of manufacturing salt of .alpha.-sulfofatty acid ester

A heavy-duty granular detergent composition consisting of 10 to 60 wt. percent of sodium citrate, 5 to 40 wt. percent of non-soap anionic surfactants, 0.1 to 10 wt. percent of inorganic aluminum salts and additives for use in conventional detergents, the weight ratio of the citrate to the surfactants being 1/5 to 10/1.

Growing community of inventors

Tokyo, Japan

Kazuo Ohbu