Yoshitomi Pharmaceutical Industries, Ltd.

Api Corporation

Hiroyuki Akashi

Yasuhiro Hidaka

Takeshi Inoue

Shoichi Horie

Yasuhiro Kozasa

Toshio Morishita

Yoshifumi Shibuya

Masanori Kohara

Satoshi Oda

Tetsuji Ike

Hidaka Yasuhiro

Kenichi Sawatari

Toshihiko Mukai

The present invention provides a bis(2-pyridinethiol-1-oxide) copper salt coated with one or more compounds selected from glycerin, dialkyl phthalate, lubricating oil, acrylic resin, rosin, fatty acid amide, dialkyl polysulfide, polybutene, paraffin and petrolatum. The coated copper salt does not scatter, so that it is easy to handle, and is superior in safety and workability. In addition, the copper salt does not suffer from any adverse influence on the inherent storage stability or antifouling effect by being coated. Therefore, a coating for the bottom of a ship having a superior antifouling effect and storage stability can be obtained.

Coated bis (2-pyridinethiol-1-oxide) copper salt

Coated bis(2-pyridinethiol-1-oxide) copper salt

Tetrakis(2,4-di-tert-butyl-5-methylphenyl)-4,4'-biphenylenediphosphonite, stabilizers for organic materials, which contain said compound, and stabilized organic materials containing said compound as a stabilizer. The tetrakis(2,4-di-tert-butyl-5-methylphenyl)-4,4'-biphenylenediphosphonite has particularly superior hydrolysis resistance, and is characterized in that it has superior storage stability due to its scarce hygroscopicity. It can be purified and handled easily since it is in a powder form, and it shows less volatility at high temperatures. By using the compound of the present invention as a stabilizer for organic materials, extremely useful organic materials imparted with superior processing stability, heat resistance and resistance to oxidative degradation can be provided.

4,4'-biphenylenediphosphonite compound and use thereof

Alkanedicarboxylic diester compounds

Salicylanilides of the formula: ##STR1## wherein each of R.sup.1 and R.sup.2 is hydrogen or methyl; R.sup.3 is hydrogen or C.sub.1-5 alkyl; R.sup.4 is hydrogen, nitro or methyl; and R.sup.5 is nitro, methyl, methoxy, ethoxy, methylthio or ethylthio, having utility as antifouling agents but having very low mammalian toxicity.

Certain salicylanilides

Growing community of inventors

Fukuoka, Japan

Hiroyuki Akashi