C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 2/44 (2006.01) C08F 20/56 (2006.01) C08F 220/56 (2006.01) C08F 263/04 (2006.01) C08F 271/02 (2006.01) C08F 291/00 (2006.01)
Patent
CA 2277128
This invention is related to a method of producing acrylic amide-based polymer dispersions which comprises polymerizing a water-soluble monomer composition containing an acrylic amide monomer in an aqueous solution of an inorganic salt in the presence of a homopolymer of vinyl-pyrrolidone and/or a copolymer of vinylpyrrolidone and another monomer, wherein the inorganic salt is present in an effective concentration for precipitation of the resulting polymer, in a case where said water-soluble monomer composition. containing an acrylic amide monomer is a mixture of acrylamide and sodium acrylate, the content of said sodium acrylate is not more than 40 mole percent based on the total amount of said acrylamide and said sodium acrylate.
La présente invention concerne un procédé de production d'une dispersion de polymères d'acrylamide à concentration élevée, laquelle dispersion est bon marché, très fluide et très maniable. Le procédé consiste à polymériser un composant monomère hydrosoluble contenant un acrylamide dans une solution aqueuse de sel inorganique en présence d'homopolymère et/ou copolymère de vinylpyrrolidone comprenant un vinylpyrrolidone et d'autres monomères.
Fujikake Masato
Fujimoto Nobutaka
Hamamoto Shigeki
Kondo Kimihiko
Nakamura Morio
Riches Mckenzie & Herbert Llp
Sumitomo Seika Chemicals Co. Ltd.
Taki Chemical Co. Ltd.
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