Mitsui Toatsu Chemicals, Incorporated

Yoshimoto Watanabe

Takayoshi Masuda

Tsutomu Takase

Masaru Honjo

Masami Ohtaguro

Shinji Ando

Fumio Yamazaki

Disclosed herein is a granule containing physiologically-active substance which comprises at least

Granule containing physiologically-active substance, method for

This invention provides a method for purifying crude fatty acid esters of saccharide containing at least fatty acid glycerides as impurity, and which method comprises decomposing the fatty acid glycerides by the treatment thereof with a lipid splitting enzyme or with a combination of a lipid splitting enzyme and a reducing agent in the presence of water.

Method for purifying fatty acid esters of saccharide

An improved process for the production of polytetramethylene ether glycol is disclosed. Polytetramethylene ether glycol is obtained with a high yield by subjecting tetrahydrofuran to ring opening polymerization in the presence or absence of an organic solvent with the use of, as a catalyst, a lithium halide in conjunction with fuming sulfuric acid. Average molecular weight of the glycol product can be controlled in the range of 1000-3000 at will by varying the amounts of the lithium halide and fuming sulfuric acid used.

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Nagoya, Japan

Yoshimoto Watanabe