Shin-Etsu Chemical Co., Ltd.

Denki Kagaku Kogyo Kabushiki Kaisha

Toyo Soda Manufacturing Co., Ltd.

Nagaoka University of Technology

Yoshinobu Isono

Kazuhiro Hirahara

Toru Nakanishi

Atsushi Takano

Akira Yamamoto

Osamu Watanabe

Toshinobu Ishihara

Fujio Yagihashi

Yasushi Abe

Motoyuki Yamada

Teruo Fujimoto

Naoki Kobayashi

Yoshiyuki Miyaki

Provided are a vulcanizate of a chloroprene rubber composition containing carbon black that generates a smaller amount of heat when used and a method for producing the same by a simpler and more convenient method. First, an unvulcanized rubber composition at least containing a chloroprene polymer and carbon black is vulcanization-molded, to give a semivulcanized molded article having a cure characteristic value, as determined by the method specified in JIS K6300-2: 2001, in the range of tto t. Then, the semivulcanized molded article obtained by semivulcanized film-forming step is additionally vulcanized in the state as it is deformed entirely and the deformation is removed, to give vulcanizate in a desired shape.

Vulcanizate and process for producing same

There is disclosed a cross-linked polymer solid electrolyte and a method of manufacturing the same. A crosslinking agent is added to a block-graft copolymer composed of a polymer block chain A represented by formula I and a polymer block chain B represented by formula II; a high energy ray is irradiated to the block-graft polymer in order to crosslink the entire system; and an nonaqueous electrolytic solution is added to the block-graft polymer. There is also disclosed a composite solid electrolyte for use in a solid electrochemical element. The composite solid electrolyte includes an electrically insulating material, an alkali metal salt, a block-graft copolymer composed of a polymer block chain A represented by formula I and a polymer block chain B represented by formula II, and an aprotic organic solvent. ##STR1##

Cross-linked polymer solid electrolyte, method of manufacturing

There are disclosed a self-crosslinked polymer solid electrolyte, a composite solid electrolyte, and a method of manufacturing the same. A high-energy ray is irradiated to a block-graft copolymer composed of a polymer block chain A represented by formula I and a polymer block chain B represented by formula III in order to crosslink the entire the system. A nonaqueous electrolytic solution is then added to the block-graft polymer to obtain a self-crosslinked polymer solid electrolyte. The self-crosslinked polymer solid electrolyte and an electrically insulating material are combined to obtain a composite solid electrolyte. ##STR1##

Block-graft copolymer, self-crosslinked polymer solid electrolyte and

A polystyrene type monodispersion polymer having at least a monomer unit represented by the following general formula (I), and having a molecular weight which lies in the range 500-500,000 and manufacturing process thereof are disclosed; ##STR1## where R is a hydrogen atom or methyl group, and the R in the molecule may be identical or different.

Polymer having a narrow dispersion of molecular weight and a

This is a method for separating or purifying an amino acid from a mixture including other substance such as an inorganic salt other than the amino acid and/or a mutual mixture of amino acids including the amino acid by means of piezo-dialysis employing an amphoteric ion exchange membrane. This membrane is made from a ternary block copolymer having a molecular structure of straight chain in which first macro-molecule with a cation exchange group, second macromolecule with an anion exchange group and third macromolecule without ion exchange group are linked together.

Method for separating and purifying amino acid

Growing community of inventors

Nagaoka, Japan

Yoshinobu Isono