Arakawa Kagaku Kogyo Kabushiki Kaisha

Nippon Petrochemicals Company, Limited

Kimio Kawatani

Eiji Watanabe

Toshiharu Okumichi

Takashi Fujikawa

Ryoji Kaji

Tatsumi Toshine

Shigenori Tsujimoto

An emulsifier for emulsion polymerization containing as its active component a half amide alkali salt and/or a half ester alkali salt of a succinic acid having a hydrocarbon substituent with 8 to 30 carbon atoms.

Emulsifier for emulsion polymerization

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.

Self-emulsifying sizing composition

This invention provides a process for preparing an aqueous dispersion of a rosin-base material by an inversion method, the process being characterized in that the dispersant is at least one of compounds represented by the formula ##STR1## wherein R is straight-chain or branched-chain alkyl or alkenyl group having 10 to 24 carbon atoms, n is an integer of 4 to 25, one of X and Y is --SO.sub.3 M and the other thereof is hydrogen atom, and M is a monovalent cation. The aqueous dispersion obtained by the process of the invention have excellent sizing effects, very high stabilities and greatly reduced foaming propertie

Process for preparing aqueous dispersion of rosin-base materials

This invention provides a process for preparing an aqueous dispersion of a rosin-base material by an inversion method, the process being characterized in that the dispersant is at least one of compounds represented by the formula ##STR1## wherein R is hydrogen atom or lower alkyl group, A is straight-chain or branched-chain alkylene group having 2 or 3 carbon atoms, n is an integer of 4 to 25, one of X and Y is --SO.sub.3 M and the other thereof is hydrogen atom, and M is a monovalent cation. The aqueous dispersion obtained by the process of the invention have excellent sizing effects, very high stabilities and greatly reduced foaming properties.

This invention provides a process for preparing an aqueous dispersion of a rosin-base material by a so-called inversion method, the process being characterized in that the dispersant is at least one member selected from the group consisting of:

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Suita, Japan

Kimio Kawatani