Daikin Industries, Ltd.

Daikin Kogyo Co., Ltd.

Kazuo Okamura

Satoshi Koyama

Yoshiyuki Shibuya

Shigeo Daimon

Hideki Aomi

Ikuo Kitamura

Katsushi Tokunaga

Tadayuki Maeda

Shiego Daimon

Nobuyuki Tomihashi

Kohji Tamura

Koichi Kitazawa

Utako Endo

Tomoji Kawai

Tutomu Kamihigoshi

A bismuth system oxide superconductor comprising the 110 K phase is effectively prepared by a process comprising the steps of mixing a bismuth compound, a strontium compound, a calcium compound, a copper compound and optionally a lead compound, optionally provisionally sintering the mixture, and sintering the mixture.

Bismuth system oxide superconductors and preparation thereof

A magnetic coating composition comprising acicular particles containing iron carbide and a main magnetic material.

Magnetic coating composition and magnetic recording medium

The present invention relates to novel acicular particles, processes for using the same, and magnetic materials prepared from such particles. In particular, the invention relates to an acicular particulate material containing iron carbide and having a high coercive force (Hc) an orientation property in a magnetic field.

Acicular iron carbide particulate material and process for producing same

Iron carbide fine particles which have a coating layer of at least one metal compound selected from the group consisting of copper compound and manganese compound.

Coated iron carbide fine particles

A purification method of carbon fluorides by removing non-bonding fluorine from carbon fluorides. The removing treatment is carried out by contacting gases with the non-bonding fluorine. Such gases are HCl, SO.sub.2, NO.sub.2, H.sub.2, steam and a mixed gas thereof.

Purification method of carbon fluorides

The present invention relates to novel acicular particles, processes for using the same, and magnetic materials prepared from such particles. In particular, the invention relates to an acicular particulate material containing iron carbide and having a high coercive force(Hc) an orientation property in a magnetic field.

Acicular process for producing particulate material

Organic electrolyte cells comprising a lithium anode and a fluorinated graphite cathode, and using a solution of lithium hexafluorophosphate (LiPF.sub.6) in an organic solvent as the electrolyte, whereby the discharge capacity is remarkably improved.

Lithium-fluorinated graphite cell

An active material for batteries or cells having improved discharge characteristics and comprising a fluorinated graphite produced by fluorination of graphite with fluorine, the fluorinated graphite containing substantially no unreacted graphite and having a degree of fluorination such that the weight or fluorine content thereof is increased by a further fluorination under conditions equal to or severer than the fluorination conditions adopted to the production of the fluorinated graphite. The use of artificial graphite having a Franklin's P-value of at least 0.45 as a starting material is effective for further improving the discharge voltage and the capacity.

Active materials for batteries

A process for producing acicular particles containing an iron carbide which comprises,

Process for producing acicular particles containing an iron carbide

A process for producing cobalt-modified iron oxide particles, which comprises the steps of:

Process for producing magnetizable particles

A process of electrostatic printing which comprises the steps of forming a reverse image of a dielectric toner on an electroconductive support or a photoconductive support, fixing the reverse image to give an electrostatic printing master sheet, and conducting electrostatic printing in which electrification of the dielectric toner image on the master sheet, development with a toner, transfer of the resulting toner image to a material to be printed and fixing are repeatedly carried out to give numerous sheets of duplicates.

Process of electrostatic printing with fluorinated polymer toner additive

A polymer containing perfluoroalkyl group in its side chain which is an addition reaction product of a polymer having the following general formula: ##STR1## wherein R is phenyl group or alkoxyl group having 1 to 12 carbon atoms, R.sup.1 is alkyl group having 1 to 12 carbon atoms, and n is an integer of 10 to 2,000, with an epoxy compound selected from the group consisting of ##STR2## wherein R.sub.f is perfluoroalkyl group having 3 to 20 carbon atoms and R.sup.2 is alkyl group having 1 to 12 carbon atoms, the addition reaction product containing 0.1 to 50% by mole of the group derived from the epoxy compound having the formulae (IIa) to (IIc) per 1 mole of the recurring unit of the polymer having the formula (I). The polymer is good in compatibility with film-forming resins and solvents and improves the leveling property of a coating composition when incorporated thereinto and the surface smoothness of the film obtained from the composition.

Growing community of inventors

Itami, Japan

Kazuo Okamura