Toyo Ink Manufacturing Company

New Oji Paper Co, Ltd.

Hazama Corporation

Hiromi Uchida

Toshio Enokida

Reiko Tanaka

Takeo Yamaguchi

Michiko Tamano

Miki Kawashima

Takashi Kawamukai

Terunobu Maeda

Kunio Horiuchi

Shinichi Koga

Atsunori Negishi

Hisanori Yagi

Hideyuki Mikado

To provide a,growth inhibitor, a cement composition, and a cement structure which are capable of inhibiting effectively growth of,not only in the neutral pH range but also in the acidic pH range of 4 or below, of which active component metal ions are sufficiently prevented from being dissolved and released when contained in a cement structure, and of which effect can be maintained for a prolonged period of time. The inhibitor contains a first component selected from the group consisting of nickel phthalocyanine powders, powders of a nickel phthalocyanine derivative, and mixtures thereof, and a second component selected from the group consisting of tungsten powders, powders of a substantially water-insoluble tungsten compound, a water-soluble salt of tungstic acid turning to substantially water-insoluble when reacted with cement, and mixtures thereof.

Thiobacillus thiooxidansgrowth inhibitor, cement composition, and cement structure

Deterioration preventive for concrete or mortar and method for

A moisture-proof paper sheet comprising a moisture-proof coating layer formed on a paper sheet substrate and comprising (a) a moisture-proof, film-forming synthetic resin (for example, carboxyl-modified SBR resin), (b) plate crystalline phyllosilicate compound particles with an average size of 5 to 50 .mu.m and an aspect ratio of 5 or more and (c) a moisture-proofness-enhancing agent, for example, urea-formaldehyde condensation reaction products, organoalkoxysilane compounds, or polyamidepolyurea compounds, has an enhanced resistance to water vapor permeation and, after use, the waste moisture-proof paper sheet can be easily re-pulped and recycled.

Moisture-proof paper sheet

A liquid polyester obtained by reacting a cyclic acid anhydride (A) containing at least 10 mol % of one of specific cyclic acid anhydrides with an epoxy compound (B) in a cyclic acid anhydride (A):epoxy compound (B) molar ratio of 10:8-10:12, can be applied with a conventionally generally used film-forming machine such as a roll coater or a printing machine, can easily give a film-forming material such as a solvent-free coating composition or ink and a curable liquid resin for use as an adhesive, is a low-temperature curing liquid polyester useful as a compatibilizer, a surface-tension modifier, a pigment dispersing agent and a metal chelating agent, and is curable in air in the presence of a relatively small amount of a catalyst.

Liquid polyesters from cyclic acid anhydrides

Growing community of inventors

Tokyo, Japan

Hiromi Uchida