Kanegafuchi Kagaku Kogyo Kabushiki Kaisha

Kaneka Corporation

Toshimitsu Nakashima

Wataru Okada

Toragoro Mitani

Takeshi Shiotani

Osamu Odawara

Satoru Yokomizo

Susumu Kyotani

Process for producing a copolyester of desired quality at low cost with high productivity, preferably a process for producing P(3HB-co-3HH) of 4 mol % or more 3HH content with a productivity as high as 40 g/L or more. In particular, a process for producing a copolyester of 3HB and 3HH comprising culturing a microorganism with the use of, as a carbon source, a fat or oil containing lauric acid as a constituent fatty acid under such conditions that phosphorus as a source of nutrition is limited.

Process for producing copolyester

A process of an interesterification reaction of fats, wherein a fatty acid moiety of a glyceride is substituted by other fatty acid moiety, and the reaction is accelerated by a catalyst and is continued constantly at a high rate for a long time. The process uses a dry cell for a catalyst. The dry cell is prepared from a lipase-containing microorganism by cultivating it to increase a lipase content and drying it to control water content.

Interestification of fats

A process for removing an organic compound having a high boiling point from a floatable polymer containing the organic compound, which comprises contacting a slurry of the polymer with a non-condensable gas at a high temperature by strongly agitating with an agitator at an impeller Reynolds number of not less than 10.sup.5. According to the process, the organic compound having a high boiling point can be readily removed down to not more than 10 ppm.

Process for removing organic compound having high boiling point from a

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Takasago, Japan

Toshimitsu Nakashima