Kanegafuchi Kagaku Kogyo Kabushiki Kaisha

Kanegafuchi Chemical Industry Co., Ltd.

Shinji Kato

Hisashi Morikawa

Kyouji Uku

Masao Nakagawa

Katsuhiko Yoshihara

Hiroji Isukamoto

Masaki Miyamoto

Toichiro Yoda

A method of preparing droplets wherein a dispersion phase, insoluble or sparingly soluble in water, is injected in the form of a laminar flow into an aqueous continuous phase through an orifice. The viscosity ratio between the two phases is adjusted to a specific range to produce droplets of uniform diameter at a specified jet velocity.

Method for preparation of droplets

A continuous suspension polymerization process for the production of polymeric particles substantially uniform particle size, entailing the steps of forming monomer droplets of substantially uniform particle size through an orifice under vibration, and effecting polymerization of the monomer droplets in an aqueous medium. The process permits carrying out polymerization without destruction or agglomeration of the monomer droplets, so that the particle size of the polymeric particles thus produced depends predominantly upon the particle size of the monomer droplets as initially formed.

Process of continuous suspension polymerization

In a process for preparing foamable synthetic resin granules by suspension polymerization, a fatty acid bisamide is added prior to or at an early stage of polymerization in the presence of an inorganic salt and a foaming agent is added at a later stage of polymerization or after completion thereof.

Process for preparing foamable synthetic resin granules

Growing community of inventors

Takasago, Japan

Shinji Kato