公开(公告)号：JP2000191681A

公开(公告)日：2000-07-11

申请号：JP37304498

申请日：1998-12-28

Applicant: KAO CORP

Inventor： KOIKE TOYOMI ,  NAGUMO HIROSHI ,  OKA KOJI

IPC: C07H15/04 ,  C07B61/00

Abstract: PROBLEM TO BE SOLVED: To efficiently obtain an alkyl glycoside useful for a low stimulative surfactant or the like by reacting a higher alcohol with an aqueous saccharide in the presence of a nonionic surfactant under a specific condition. SOLUTION: The alkyl glycoside is obtained by the following processes: (1) mixing a higher alcohol such as octyl alcohol with an aqueous saccharide such as glucose at a temperature under the melting point of the aqueous saccharide and adjusting the moisture content of dehydrated, separated saccharide particles so as to have

公开(公告)号：JPH0977787A

公开(公告)日：1997-03-25

申请号：JP23236995

申请日：1995-09-11

Applicant: KAO CORP

Inventor： OKA KOJI ,  TATE KENICHI

IPC: C07H15/04 ,  B01J31/02 ,  C07B61/00 ,  C07H1/00

Abstract: PROBLEM TO BE SOLVED: To obtain an alkylglycoside useful as a low-stimulative surfactant and a foam stabilizer of an anionic surfactant, etc., in a short reaction time and at a high yield by reacting a sugar having a specific average granular diameter with a higher alcohol in the presence of an acid catalyst. SOLUTION: The objective alkylglycoside as a low-stimulative surfactant and acting as a foam stabilizer of an anionic surfactant in a short reaction time and at a high yield is obtained by introducing a sugar such as glucose and a higher alcohol such as a mixed alcohol of decyl alcohol, lauryl alcohol and myristyl alcohol into a reaction vessel, crushing the sugar under circulating the sugar with using a continuous crusher and a circulator, or an outer circulating line having a circulator having a crushing function to adjust an average granular diameter of the sugar to be 10-70μm and reacting the sugar having 10-70μm average diameter with the higher alcohol for a period from initial of the reaction to the time almost reaction proceeds in the presence of an acid catalyst such as p-toluenesulfonate.

公开(公告)号：JPH06336491A

公开(公告)日：1994-12-06

申请号：JP12593793

申请日：1993-05-27

Applicant: KAO CORP

Inventor： SHIBATA KENGO ,  OKA KOJI ,  AIMONO KIYOSHI

IPC: C07H1/06 ,  C07H13/06

Abstract: PURPOSE:To provide a method for fractionating a sucrose fatty acid ester having a specific composition from a reaction mixture of sucrose fatty acid esters by a simple operation without using an organic solvent. CONSTITUTION:Sucrose fatty acid esters composed of a mixture of [SME], [SDE] and [SPE] ([SME] is a sucrose fatty acid ester having 1 ester exchange degree, [SDE] is a sucrose fatty acid ester having 2 ester exchange degree and [SPE] is a sucrose fatty acid ester having >=3 ester exchange degree) are mixed with fats and oils under heating and the prepared heated mixture is cooled to crystallize a sucrose fatty acid ester having high [SME] content. The crystallized substance is subjected to solid-liquid separation to give a crystallized sucrose fatty acid ester having high [SME] content and a sucrose fatty acid esters having high [SDE] and [SPE] contents.

公开(公告)号：JPH02306936A

公开(公告)日：1990-12-20

申请号：JP12845489

申请日：1989-05-22

Applicant: KAO CORP

Inventor： WAKIZAKA TATSUJI ,  OKA KOJI ,  SUZUKI YUJI ,  KUNIKAWA KENZO

IPC: C07C67/08

Abstract: PURPOSE:To carry out rapid esterification reaction under extremely stable condition by determining the acid value of carboxylic acid used as a raw material, the hydroxyl value of alcohol, esterification value of the ester and water- content with an IR analyzer and controlling the reaction conditions using the determined values. CONSTITUTION:In the esterification reaction of a carboxylic acid with an alcohol, the acid value of the carboxylic acid used as a raw material, the hydroxyl value of the alcohol, the esterification value and the water-content are quantitatively measured by a near infrared absorption spectrum analyzer at regular time intervals (preferably about 0.5-15min intervals). The temperature, pressure and nitrogen flow rate of the reaction vessel and the reaction time are automatically controlled based on the measured values. The reaction can be quickly carried out under extremely stable condition by this process to continuously obtain a high-quality product in a short time. The fluctuation caused by the apparatus constants and external disturbance can be quickly detected by this process to enable easy control of the reaction.