Kanegafuchi Kagaku Kogyo Kabushiki Kaisha

Masaki Matsuo

Fumiya Nagoshi

Hideyuki Arakawa

Hayashi Uchino

Mitsuru Echigoya

A method of producing a polymer or copolymer solution of vinyl chloride series, wherein polymerization of 100 parts by weight of a monomer mixture of at least 50 weight percent of vinyl chloride and less than 50 weight percent of one or more monomers copolymerizable therewith is carried out in a solvent mixture consisting essentially of 30 to 55 weight percent water, remainder N,N-dimethyl formamide, in the presence of 0.5 to 5 parts by weight of a salt of a monomeric compound having a sulphonic acid group and using an initiator for radical polymerization.

Method of producing polymer solutions of polymers or copolymers of vinyl

A modifier for vinylidene chloride resin which is produced by polymerizing 50 to 20 parts by weight of a vinyl monomer mixture comprising 0 to 60 weight percent methyl methacrylate, 0 to 30 weight percent acrylic acid ester and more than 20 weight percent aromatic vinyl monomer, in the presence of 50 to 80 parts by weight of a rubber latex consisting essentially of ethylene-vinyl acetate copolymer containing 50 to 80 weight percent vinyl acetate.

Growing community of inventors

Kobe, Japan

Masaki Matsuo