Kohjin Co., Ltd.

Sumitomo Chemical Company, Limited

Axis Corporation

Hiroshi Oka

Takashi Maruyama

Kusuki Nishioka

Hideaki Mukohyama

Akiyoshi Nagamoto

Yasutaka Doi

Kenji Shibusawa

Kouichi Imamura

Rieko Nohara

Dewatering agent for sludge

N,N-dialkylaminoalkyl (meth) acrylamide composition with improved

Acryloylmorpholine and/or methacryloylmorpholine useful as a reactive diluent for UV and EB curable resin compositions, which has low skin irritation, a little odor, low volatility, low weight loss and high workability and which provides, without imparing work environment, UV and EB curable compositions having a high curing rate and capable of forming films of high hardness with small deformation.

Diluent for UV and EB curable resins

A method for separating a desired component from a solid mixture by repeated recrystallization in a single vertical crystallizer having a plurality of chambers partitioned by solid-liquid separation means, which comprises intermittently feeding a solid mixture to the top chamber and a solvent to the bottom chamber, dissolving the solid in each chamber in the solvent by heating after feeding of the solid mixture to the top chamber, transferring the resulting solution in each chamber to the adjacent lower chamber while taking out from the bottom chamber the solution from which the desired component is recovered as an end product, cooling the solution in each chamber to precipitate crystals, and transferring the resulting mother liquor in each chamber upwardly through the separation means not capable of passing the resulting crystals by the feeding of the solvent to the bottom chamber, while allowing excess mother liquor to overflow from the top of the crystallizer, the above procedures being repeated continuously. The crystallizer suitable for practicing the method is composed of a tower having a feed port for feeding the solid mixture and a discharge port for overflow of the excess mother liquor in the upper end portion, a feed port for feeding the solvent and a discharge port for taking out the solution in the lower end portion, separtion means for separating solid and liquid by which the tower is divided into chambers, and means for heating and cooling the content in the tower.

Method for separation of solid mixtures by simultaneous multi-stage

Growing community of inventors

Hatano, Japan

Hiroshi Oka