Kanegafuchi Kagaku Kogyo Kabushiki Kaisha

Kanegafuchi Chemical Industry Co., Ltd.

Satoshi Imai

Tamiyuki Eguchi

Takeshi Shiotani

Hisashi Morikawa

Hiroaki Yamauchi

Masaaki Shimokawa

Norio Hirokawa

Yoshimitsu Mekata

A process for tempering edible plastic fat products such as margarine and shortenings which comprises crystallizing with cooling a starting material of fats and oils with or without other ingredients and subjecting the resulting product to pressuring treatment.

Process for tempering edible plastic fat products

A nutrient solution of a microorganism to be supplied to a fermentor or a culture broth in the fermentor is aseptically filtered by a porous filter medium made of polytetrafluoroethylene polymer and having properties impervious to microorganism, resistant to heat and chemicals, and hydrophilic, wherein said hydrophilic property was given to the surface of said filter medium with a treatment for hydrophilicity. This treatment comprises treating polytetrafluoroethylene porous polymer as a raw material for the filter medium with surface treating agent comprising an alkali metal naphthalene and diamine and immersing the treated polymer into concentrated sulfuric acid containing an aliphatic or aromatic aldehyde dissolved therein in a concentration exceeding half saturation.

Method and apparatus for aseptic filtration

A membrane separation apparatus adapted for use in ultrafiltration is provided comprising a casing and a membrane unit enclosed therein, said membrane unit comprising a composite membrane folded flatly in zigzag relation to form a plurality of stacked layers defining a plurality of first flow channels in alternately interleaving relation thereto, said composite membrane being made of a flexible porous support and having a pair of selectively permeable membranes on opposite outer surfaces thereof and a second flow channel therebetween.

Membrane separation apparatus

Composite membranes bearing ion-exchange groups suitable for use in membrane separation processes are produced by providing a porous substrate which is physically semipermeable by itself, applying a coating composition consisting essentially of a filmforming polymeric material to which ion-exchange groups are introduceable and a liquid medium onto the surface of said substrate, removing said liquid medium to provide an ultrathin membrane of said material having a thickness less than 10 microns, and treating said ultrathin membrane to provide said ion-exchange groups throughout said ultrathin membrane.

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Kobe, Japan

Satoshi Imai