Mitsubishi Gas Chemical Company, Inc.

Toshiaki Kanada

Kenji Maeda

Hiroshi Yoshioka

Kazuhiro Suzuki

Eiichi Yonemitsu

Takanari Nawata

Masafumi Shimpo

Tetsuo Koshitsuka

Seiichi Kamiyama

Kazunori Nagai

Yoshihiro Tsurumi

Seikyu Jinnouchi

Akiko Kimura

Takeshi Hattori

A process for producing a thiourea dioxide fluid by mixing thiourea and a peroxide, or thiourea, a peroxide and a reaction catalyst, or thiourea, a peroxide, a reaction catalyst and a chelating agent, in the absence or presence of pulp and a process for bleaching pulp by the use of the thiourea dioxide fluid produced by the above process economically advantageously with a small chemicals loss and by small consumption of energy.

Process for producing thiourea dioxide

A process for making hydrogen peroxide by catalytically reacting oxygen with hydrogen in a liquid reaction medium, which comprises

Process for making hydrogen peroxide

A process for producing amine formaldehyde resin foam by using a precondensate for the amine formaldehyde resin, a foaming agent, a surfactant and a curing agent is disclosed. Said process is characterized in that the foaming agent is selected from the group consisting of aliphatic hydrocarbons or halogenated aliphatic hydrocarbons having a boiling point in the range of from about -30.degree. C. to about 30.degree. C., the foaming agent is used in amount of from about 0.07 mol to about 1.0 mol per 100 gr. of solid content of the precondensate for resin (residue obtained by heating the precondensate in accordance with JIS K 5400 8.2.1.), the process comprising mixing the precondensate, the foaming agent and the surfactant, emulsifying the resulting mixture at a specified pressure at a temperature of at least 0.degree. C. and higher than the boiling point of the foaming agent by 5.degree.-50.degree. C., and while or after mixing the curing agent with the mixture, foaming the mixture at a specified temperature and pressure.

Process for producing amine formaldehyde resin foam

A thermoplastic resin composition having excellent mechanical and thermal properties as well as excellent moldability comprising a bis(hydroxyaryl)alkanic polycarbonate and a rubber-modified polychlorostyrenic resin prepared by latex-blending a chlorostyrenic graft polymer latex and a chlorostyrenic copolymer latex.

Thermoplastic resin compositions

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Tokyo, Japan

Toshiaki Kanada