Nippon Oil Company

Other

Takashi Kiyota

Akira Tsubokura

Hisashi Yoneda

Mikihiro Takaki

Mitsuo Matsuno

Hideo Hayashi

Yoshihiko Araki

Shinichi Shirahama

Takayuki Hirayama

Hiroyuki Hoshino

Tetsuo Okawa

Mikihiro Takai

Motomitsu Kitaoka

A cooling medium and a cooling device for optical equipment using the same, which cooling medium has a refractive index in a specific range, hardly causes the problem to dissolve or swell plastic lens and other component parts, and is flame retardant. The cooling medium comprises a cyclic aliphatic hydrocarbon having at least one cross linkage and has a flash point of 120&deg; C. or above and a melting point of &minus;20&deg; C. or below. The space between a pair of transparent optical members of a cooling device for optical equipment, is filled with the cooling medium.

Cooling medium for optical equipment and cooling device using the same

Disclosed is a traction drive fluid which comprises (A) one or more than two compounds selected from the group consisting of saturated polycyclic hydrocarbon compounds represented by the formulae:

Traction drive fluid

Bacterium belonging to a new genus, and a process for production of carotenoid pigment selected from the group consisting of astaxanthin, adonixanthin, .beta.-carotene, echinenone, canthaxanthin and zeaxanthin, comprising the steps of culturing a bacterium capable of producing at least one of the carotenoid pigments, and recovering an individual carotenoid pigments. The producer bacterium belongs to new genus. According to the present process various carotenoids can be produced in an industrial scale. By the present process (3S, 3'S)-astaxanthin can be produced in an almost 100% purity.

Bacteria for production of carotenoids

Bacteria belonging to new genus process for production of carotenoids

A process for extraction of a carotenoid compound from bacterial cells containing the carotenoid compound comprising the step of bringing the bacterial cells into contact with supercritical fluid so as to extract the carotenoid compound from the cells. The process provides carotenoid compounds which can be safely used as feed additives and food additives.

Process for extraction of carotenoids from bacterial cells

A process for production of canthaxanthin comprising the steps of culturing a microorganism capable of producing canthaxanthin and belonging to the genus Corynebacterium, such as Corynebacterium sp. SQH 348 (FERM BP-4284), and recovering canthaxanthin from the culture.

Process for production of canthaxanthin

A process for the production of hydroxocobalamin that eliminates cyanocobalamin as an intermediate. Co-enzyme-type vitamin B.sub.12 is first absorbed to a divinylbenzene/styrene resin which is washed with warm water and then eluted with a solution containing at least 25% of a lower alcohol. The eluate is then irradiated with a light that causes the conversion of coenzyme-type vitamin B.sub.12 to hydroxocobalamin. Finally, the solution of hydroxocobalamin is treated with alumina or silica which binds the impurities leaving behind the highly purified hydroxocobalamin in the flow-through.

Process for production of hydroxocobalamin

A process for the production of an optically active 3-methyladipic acid represented by the formula (I): ##STR1## wherein the symbol * represents an asymmetric carbon atom, comprising the steps of culturing a microorganism belonging to the genus Candida and capable of producing the optically active 3-methyladipic acid in a medium containing squalene, to produce an optically active 3-methyladipic acid; and recovering the optically active 3-methyladipic acid from the cultured product.

Process for production of optically active 3-methyladipic acid from

A process for the production of methylsuccinic acid represented by the formula (I): ##STR1## wherein the symbol * represents an asymmetric carbon atom, comprising the steps of culturing Candida in a medium containing squalene and producing methylsuccinic acid.

Process for production of (R) methylsuccinic acid from squalene using

A process for removing unreacted monomers or solvents from synthetic rubber latex or synthetic resin latex comprising bringing said latex into contact with an inert gas fluid at a temperature ranging from 40.degree. to 100.degree. C by feeding said latex into the upper part of a wetted-wall tower without imposing any substantial mechanical shear stress.

Growing community of inventors

Yokohama, Japan

Takashi Kiyota