Kao Corporation

Yoshimitsu Ina

Masayuki Kato

Toshiyuki Suzuki

Hisao Tsutsumi

Seiichi Miyanaga

Junichi Fukasawa

Shigeo Nakai

Hitoshi Funada

Akira Shigeta

Toshiki Matsuo

Takayuki Amiya

Takahide Minami

Masahiko Kagitani

Masahide Nohta

Manami Nozawa

Inorganic coated sand in a dry state having refractory aggregate; and an inorganic binder layer formed on a surface of the refractory aggregate, in which the inorganic binder layer contains a metasilicate hydrate.

Inorganic coated sand

In production of a mold with the reclaimed spherical molding sand having a sphericity of 0.95 or more and mainly composed of AlOtogether with the binder containing the acid-hardening resin and the hardening agent (I), at least one of the hardening agents (I) and (II) that is used in production of a mold from which the reclaimed molding sand is obtained contains the organic sulfonic acid, and in the hardening agent, a content of sulfuric acid is not more than 5% by weight and a content of phosphoric acid is not more than 5% by weight.

Method for producing mold

The present invention relates to a process for producing reclaimed casting sand, which has step (I) of grinding recovered sand in the presence of an additive (A) containing a liquid having a surface tension of not higher than 35 mN/m at 25&#xb0; C. and a boiling point of not lower than 150&#xb0; C. at 1 atmospheric pressure.

Process for producing reclaimed casting sand

A spherical casting sand having an average particle diameter of 0.03 to 1.5 mm, produced by a flame fusion method, usable together with a urethane binder. Casting sands capable of producing a mold having higher strength and excellent surface smoothness without deformation or breakage with fewer gas defects in producing a mold by using a urethane binder in the cold box process or in the urethane self-hardening mold making method. The casting sand has longer bench life in the cold box process. Amount of generated gas that is a problem of the mold making method using a urethane binder can be significantly reduced, and a casting with fewer gas defects can be obtained.

Spherical casting sand

The present invention provides resin-coated sand containing spherical molding sand with a binder composition, the spherical molding sand having an average particle diameter of 0.02 to 1.5 mm and being produced by a flame fusion method.

Resin-coated sand

A process for producing polymer particles with an irregular shape by polymerizing a water-soluble polymerizable monomer in a system comprising a hydrophobic organic solvent inert to the polymerization and an aqueous solution of the water-soluble polymerizable monomer, characterized in that the system further contains an anionic surfactant.

Process for producing polymer particles with irregular shape

A fat and oil composition comprises (1) as the main triglyceride one or more mixed acid triglyceride having one or more saturated C20 to C24 fatty acid residue and one or more unsaturated C16 to C22 fatty acid residue in a molecule thereof and (2) in the entire fatty acid moiety 15 to 70 wt. % of one or more saturated C20 to C24 fatty acids and 20 to 60 wt. % of one or more unsaturated C16 to C22 fatty acids. It is useful as a base of a solid cosmetic preparation.

Solid cosmetic preparation

A novel cosmetic comprises an oil gel formed by at least one metal salt of a dialkyl phosphate of the following general formula (I), (II) or (III) ##STR1## in which each R.sub.1 and each R.sub.2 independently represent a saturated or unsaturated, linear or branched hydrocarbon group having from 8 to 36 carbon atoms, m is an integer of from 1 to 3, n is an integer of from 0 to 2, k is a value of 1 or 2, and 1 is a value of 0 to 1, and a cosmetic oil. The metal salt of the dialkyl phosphate can yield a good oil gel when it is incorporated into the oil in an amount as small as 0.1 to 10% of the oil. Further, the dialkyl phosphate retains good feel of oils without causing oozing of the oil, crazing, discoloration, perspiration and the like.

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Aichi, Japan

Yoshimitsu Ina