Arakawa Kagaku Kogyo Kabushiki Kaisha

Nippon Petrochemicals Company, Limited

Takashi Fujikawa

Kimio Kawatani

Eiji Watanabe

An internal sizing agent for paper making which produces excellent sizing effect and which can be used in neutral to alkaline regions without the ordinarily employed fixing agent such as aluminum sulfate. The sizing agent contains a specific reaction product and/or hydrogenation product of said reaction product, said reaction product being prepared by adding maleic anhydride to branched internal olefins having 14 to 36 carbon atoms which branched internal olefins are obtained by oligomerizing one member or a mixture of two or more of olefins having 6 to 18 carbon atoms.

Method of sizing paper

A self-emulsifying sizing composition comprising at least one substituted succinic anhydride, and at least one member selected from the group consisting of an acetylated polyoxyethylene sorbitan fatty acid ester and a polyoxyethylene compound as a dispersing agent. The composition can simultaneously satisfy the dispersibility in water, the storage stability and the sizing effect, and is suitable for use in neutral paper making.

Growing community of inventors

Kyoto, Japan

Takashi Fujikawa