Toa Nenryo Kogyo Kabushiki Kaisha

Toa Nenryo Kogyo, K. K.

Tsugio Maejima

Nobuaki Tagaya

Satoshi Sakurada

Takao Hashimoto

Noriko Komatsu

Keiko Fukamachi

Masao Yoshizawa

Hideyuki Kuwahara

Tetsuo Kanakubo

Wataru Kobayashi

Kimio Tamai

Kenji Ashibe

An assemblage of hydroxyl apatite particles having small and uniform particle size. The median of the particle size is 1 to 10 .mu.m, and at least 90% of the particles in the assemblage have a particle size of not more than 25 .mu.m. The assemblage can be used to pack a liquid chromatography column.

Assemblage of hydroxyl apatite particles and liquid chromatography

This invention relates to a method for catalytically manufacturing a low pour point petroleum product from distillates of crude oil, and more particularly to a method for economically manufacturing a low pour point petroleum product, such as the insulating oil, the lubricating oil used for various types of freezing devices, or the base oil for such lubricating oil, from a paraffin-based crude oil as the starting material without using any special rare crude oil such as naphthene-based crude oil. The catalyst comprises zeolite TSZ.

Method for manufacturing low pour point petroleum product with zeolite

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Saitama, Japan

Tsugio Maejima