Asahi Kasei Kogyo Kabushiki Kaisha

Asahi Kasei Kabushiki Kaisha

Kenichi Sanechika

Akira Yoshino

Masanori Ikeda

Hiroyuki Fukui

Junichi Shishido

Takayuki Nakajima

A cyclic conjugated diene copolymer comprising a main chain comprised of (A) cyclic conjugated diene monomer units, (B) monomer units obtained from vinyl aromatic monomers each having a hydrogen atom at the &#x3b1;-position thereof, and optionally (C) monomer units obtained from commoners which are other than the monomers used for obtaining the monomer units A and B and which are copolymerizable with at least one of the monomers used for obtaining the monomer units A and B, wherein all monomer units A and the monomer units B together form one or more polymer chains each having an A/B random sequence, wherein the one or more polymer chains each having an A/B random sequence contain at least one polymer chain having a number average molecular weight of from 20,000 to 500,000 and contain no polymer chain having a number average molecular weight of more than 500,000. A process for producing the above-mentioned cyclic conjugated diene copolymer by living anionic polymerization.

Copolymer of conjugated cyclodiene

Disclosed is a lubricant oil composition comprising: (A) a fluorine-containing aromatic compound, and (B) an alkyl- or alkyl derivative-substituted aromatic compound having a kinetic viscosity of from 0.1 to 500 cSt as measured at 40 .degree. C., wherein: the compound (A) is represented by the formula:

Lubricant oil composition comprising a fluorine-containing aromatic

A process for the production of a polyacetylene composite is disclosed. A solution containing at least one ionic organic compound represented by the formula (I): ##STR1## wherein M denotes at least one member selected from the group consisting of alkali metals, X and Y are the same or different and represent --O or ##STR2## R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each are at least one member selected from the group consisting of hydrogen, substituted or unsubstituted alkyl groups of 1 to 5 carbon atoms, and substituted or unsubstituted alkoxy groups of 1 to 5 carbon atoms, or R.sub.1 and R.sub.2 or R.sub.3 and R.sub.4 in combination form a cyclic structure, is applied to a polyacetylene polymer. The coated polyacetylene polymer is then dried.

Polyacetylene composite, process for production thereof, and method for

Polyacetylene composite comprising a polyacetylene polymer coated with at least one ionic organic compound such as alkali metal alkoxide type compounds of 1,2-diol, semicarbonic ester derivatives of 1,2-diol, and ortho-ester derivatives; a process for the production of the above composite characterized by applying a solution of the above ionic organic compounds to the polyacetylene polymer; a process for the production of the above composite characterized by placing the polyacetylene polymer as an electrode in an electrolyte containing a cyclic carbonic ester compound and an alkali metal ion and electrochemically reducing the cyclic carbonic ester compound; and a process of using an n-doped polyacetylene composite as a negative electrode active substance for a secondary battery. The ionic organic compound provides high stability to the n-doped polyacetylene and therefore the secondary battery using it as a negative electrode active substance has outstanding protracted charge-discharge cycle properties, self-discharge properties, and voltage-maintaining properties.

Polyacetylene composite process for production thereof, and method for

This invention provides a secondary battery in a nonaqueous type using a substance indicated in I below and/or a substance indicated in II below as an active material for either of positive and negative electrodes:

Secondary battery

Polyacetylene composite comprising a polyacetylene polymer being coated with at least one of the ionic organic compounds such as alkali metal alkoxide type compounds of 1,2-diol, semicarbonic ester derivatives of 1,2-diol, and ortho-ester derivatives; a process for the production of the above composite characterized by applying a solution of the above ionic organic compounds to the polyacetylene polymer; a process for the production of the above composite characterized by placing the polyacetylene polymer as an electrode in an electrolyte containing a cyclic carbonic ester compound and an alkali metal ion and electrochemically reducing the cyclic carbonic ester compound; and a process of using an n-doped polyacetylene composite as a negative electrode active substance for a secondary battery. The ionic organic compound provides a quite high stability to the n-doped polyacetylene and therefore the secondary battery using it as a negative electrode active substance amazingly excells in terms of protracted charge-discharge cycle property, self-discharge property, and voltage-maintaining property.

Growing community of inventors

Kawasaki, Japan

Kenichi Sanechika