C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/321, 402/372
C08F 2/48 (2006.01) C08F 2/00 (2006.01) C08F 2/10 (2006.01)
Patent
CA 1226699
Abstract of the Disclosure An improved process for preparing a sticky water-soluble polymer, e.g. acrylamide polymers and acrylic acid polymers, which comprises polymerizing an aqueous solution of a monomer in a polymerization vessel of which the surface contacting the aqueous monomer solution is covered with a tetrafluoroethylene-ethylene copolymer film, whereby the stickiness of the produced polymer to the vessel is remarkably decreased, namely the peelability of the polymer from the vessel is remarkably improved, and moreover the polymerization conversion is remarkably improved. Also, the use of a metal deposited tetrafluoroethylene-ethylene copolymer film as a covering material improves the efficiency of a photopolymerization and enables to use a polymerization vessel made of an inexpensive material.
471208
Adachi Yoshitugu
Kawamori Yoshihiro
Matsumoto Shusaku
Nishiyama Tadashi
Saito Takao
Dai-Ichi Kogyo Seiyaku Co. Ltd.
Osler Hoskin & Harcourt Llp
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