Mitsubishi Chemical Corporation

Idemitsu Kosan Company, Limited

Mu Ionic Solutions Corporation

Akiko Yabe

Tetsuo Murayama

Masahiko Yoshino

Kanzi Shimizu

Takayuki Shoda

Shigeki Kuze

Hiroyuki Tokuda

Yasuaki Miki

Atsushi Watarai

Kenji Tanaka

Jun Enda

Naoko Seino

Misako Ishikawa

The present invention provides an energy device having excellent properties. Also provided is a nonaqueous electrolyte solution containing a compound represented by the following Formula (1), wherein R, Rand Reach independently represent an organic group having 1 to 3 carbon atoms; and Rand R, Rand R, or Rand Rare optionally bound with each other to form a 5-membered ring or a 6-membered ring, with a proviso that a total number of carbon atoms of R, Rand Ris 7 or less. 

Nonaqueous electrolyte solution and energy device using same

A novel polymerizable high-refractive index compound which is useful as an optical material, and a holographic recording medium using the same, which has high diffraction efficiency, high light transmittance and small rate of shrinkage, are provided. A composition for forming a holographic recording layer containing a reactive compound represented by the following formula 1, a holograph recording material, and a holographic recording medium provided with a recording layer containing the same, are disclosed. 

Photoreactive composition, optical material, composition for forming holographic recording layer, holographic recording material, and holographic recording medium

The present invention is to provide a light emitting device which can generate high-intensity light emission, using a fluorescent material containing a rare earth element ion complex and being excellent in durability and also provide the fluorescent material to be used therein. The present invention relates to a light emitting device comprising a semiconductor light emitting element which emits light within the region from near-ultraviolet light to visible light, and a fluorescent material which contains a rare earth element ion complex having an aromatic ring-containing Bronsted acid ion with a pKa value of 7 or less as a ligand and emits light by the action of light of the semiconductor light emitting element.

Light emitting device and fluorescent material

Provided are a method for producing polycarbonates through melt transesterification, wherein is used a polymerization catalyst comprising a phosphorus-containing basic compound and a quaternary phosphonium salt having a specific structure; and a method for producing polycarbonates, which comprises pre-polymerization to prepare polycarbonate prepolymers followed by final polymerization of said prepolymers in a solid phase or in a swollen solid phase to produce the products, polycarbonates, and in which (1) a catalyst comprising a phosphorus-containing basic compound and a quaternary phosphonium salt having a specific structure is used in the pre-polymerization and in the final polymerization, or (2) a catalyst of a tri-valent or penta-valent phosphorus compound or a nitrogen-containing organic basic compound is used in the final polymerization, or (3) the final polymerization is effected in a vapor-phase atmosphere having an oxygen concentration of not larger than 2 ppm. In those methods, high-quality polycarbonates having good appearance, high heat resistance and high hydrolysis resistance are produced extremely efficiently.

Processes for the production of polycarbonate

Growing community of inventors

Kanagawa, Japan

Akiko Yabe