Unitika Ltd.

Ryoichi Tsurutani

Hiroshi Nakajima

Kazuhiko Nagata

Kazushige Kudo

Tsutomu Mimura

Yasuhiro Kohama

Shigemitsu Murase

Isao Tomioka

Koji Kifune

Kenzo Motosugi

Yoshihiro Arai

Masaaki Onda

Munehiko Dombou

Senji Kitabatake

Tsutomu Sugie

Shun-ichi Kiriyama

Yuriko Nakamura

Matsuo Hirami

Toshihide Hibino

Optically active .beta.-halolactic acids can be produced by contacting an .alpha.,.beta.-dihalopropionic acid with 2-halo acid dehalogenase. When the pH of the reaction system is above 9, this process gives optically active glycidic acid. Treatment of the optically active .beta.-halolactic acid thus obtained with an alkali also gives optically active glycidic acid.

Method of synthesizing optically active .beta.-halolactic acid

A method of producing a growth promoting factor for Bifidobacterium species from lactose which comprises contacting lactose with resting cells of a lactose-utilizing yeast strain having activity to rearrange lactose to galacto-oligosaccharides.

Method for production of a growth factor for Bifidobacterium sp.

A method of preparing an angiotensin converting enzyme inhibitor having the amino acid sequence selected from the group consisting of:

Method of preparing angiotensin converting enzyme inhibitors

A slow-releasing composition of a platinum-containing anticancer agent comprising a platinum-containing anticancer agent bound to deacetylated chitin. The release of the platinum-containing anticancer agent is sustained for a prolonged duration of several months, thereby minimizing undesirable side effects of the platinum-containing anticancer agent.

Slow-releasing composition of platinum-containing anticancer agent

An angiotensin converting enzyme inhibitor containing Gly-Lys-Glu-Ile-Ile-Val-Lys-Ala-Glu-Arg (SEQ ID No: 1) Gly-Lys-Met-Val-Lys-Val-Val-Ser-Trp-Tyr (SEQ ID No: 2) or Ala-Tyr-Ile-Ala-Ser-Lys-Gly-Leu (SEQ ID No: 3) as an active component.

Angiotensin converting enzyme inhibitor

A melt-processable copolyamide prepared from diamines and dicarboxylic acids by a melt-polymerization process, wherein said copolyamide contains from about 1 to 20 mol % of an aromatic amide unit having the formula ##STR1## wherein X and Y are aromatic units with extended bonds, such as 1,4-phenylene group. This copolyamide provides fiber with higher stiffness.

Melt-processable copolyamides having aromatic amide unit and fibers

This invention is a method of manufacturing heat-stable polyesters, characterized in that phosphonic acid compounds are added, when heat-stable polyesters with decreased terminal carboxyl groups are manufactured by reacting polyesters and cyclic carbonate compounds in the presence of an alkali halide compound catalyst.

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Kyoto, Japan

Ryoichi Tsurutani