Process for producing an alkylglycoside
US5886161A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 1998 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | May 22, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H15/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The process for producing an alkylglycoside, wherein the amount of coarse sugar particles in alkylglycoside can be reduced without reducing reaction yield, is provided. The process for producing an alkylglycoside comprises, PA1 a) mixing a hydrated solid sugar with a higher alcohol; PA1 b) dehydrating the mixture at a reduced pressure at a temperature of lower than a melting point of the hydrated solid sugar until a water content of the solid sugar becomes not more than 0.5% by weight; PA1 c) heating the mixture to 90.degree.-140.degree. C. so that the proportion of particles having a particle diameter of 0.3 mm or more may be not more than 0.1% by weight of the solid sugar in the mixture at the end of this step; PA1 d) reacting the mixture with an acid catalyst added thereto at a temperature of 90.degree.-140.degree. C. at a pressure of 5-100 mmHg; and PA1 e) neutralizing the acid catalyst contained in the product mixture with an alkali after the reaction has been completed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.