Arakawa Kagaku Kogyo Kabushiki Kaisha

Tatsumi Toshine

Kimio Kawatani

Kohtaro Matsuo

Satoshi Kawamura

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

This invention provides a process for disproportionating rosin, poly-unsaturated fatty acid or mixture thereof, characterized in that the disproportionation reaction is conducted in the presence of a catalyst comprising (A) at least one iodide selected from the group consisting of sodium iodide and potassium iodide and (B) at least one iron compound selected from the group consisting of iron, iron oxides, iron hydroxides and iron sulfides. The disproportionated product of this invention affords an emulsifier suitable for emulsion polymerization when neutralized with an alkali.

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Yawata, Japan

Tatsumi Toshine