Shin-etsu Chemical Co., Ltd.

Kenichi Ito

Kinya Ogawa

Toshinobu Ishihara

Seiji Sakai

Yoshihumi Takeda

Yoshihiro Shirota

Kazuhiko Kurimoto

Takao Oshima

Yoichi Hirasawa

Shigeru Arai

An agent for the prevention of salt damage of plants for use in intermediate soil comprised of water-repellent particles, and a method of preventing salt damage to plants from salty soil using an agent to establish a water-repellent layer as a layer above the underground water level. An agent for the prevention of salt accumulation in greenhouse soil comprised of hydrophobic particles which are substantially hydrophobic. A salt accumulation prevention layer containing an agent for the prevention of salt accumulation in greenhouse soil which is provided at the surface layer or a prescribed depth from the surface layer of the greenhouse soil.

Agent for prevention of salt damage of plants and a method of preventing

Heat resistant, dielectric coatings are formed by applying a heat resistant coating composition comprising an organic silicon polymer, a silazane compound, and an inorganic filler to a substrate, and baking the coating in ammoniacal atmosphere at 200.degree. to 1000.degree. C. Similarly, heat resistant, dielectric coatings are formed by applying the same composition as above to a substrate, baking a first coating layer in air, applying an organic silicon polymer base coating composition to the first coating layer, and baking a second coating layer in ammoniacal atmosphere.

Formation of heat-resistant dielectric coatings

Unreacted monomer or monomers and any other volatile organic compounds contained in an aqueous dispersion of polymerizate are removed or separated by a method comprising circulating the aqueous polymerizate dispersion from the bottom of its container to the upper part of the container located over the surface of the dispersion via an exterior conduit. The pressure in the container is maintained at a level reduced to about the saturated vapor pressure of water at the temperature of the dispersion. This manner of separation of monomer from polymer serves to improve the working environment as well as the resulting polymer quality, and the monomer or monomers thus recoverd can be advantageously recycled.

Method for removing unreacted monomers from aqueous dispersions of

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Niigata, Japan

Kenichi Ito