Title:
【発明の名称】高重合度ポリビニルエステル系重合体の製造方法及び高重合度ポリビニルアルコ-ル系重合体の製造方法
Document Type and Number:
Japanese Patent JPH0699516
Kind Code:
B2
Abstract:
Disclosed herein is a new process for producing polyvinyl ester having a high degree of polymerization having an intrinsic viscosity not less than 1.5 dl/g, preferably not less than 2.2 dl/g, and most preferably higher than 3.2 dl/g, said process comprising subjecting vinyl ester monomer to low-temperature emulsion polymerization under specific conditions. Disclosed also herein is a new process for producing polyvinyl alcohol having a high degree of polymerization having an intrinsic viscosity not less than 1.5 dl/g, preferably not less than 2.2 dl/g, and most preferably higher than 3.2 dl/g, said process comprising saponifying in the usual way the polyvinyl ester obtained by low-temperature emulsion polymerization under specific conditions.
Inventors:
Toshiaki Sato
Ken Yuki
Junnosuke Yamauchi
Takuji Okaya
Ken Yuki
Junnosuke Yamauchi
Takuji Okaya
Application Number:
JP18209786A
Publication Date:
December 07, 1994
Filing Date:
August 01, 1986
Export Citation:
Assignee:
KURARAY CO.,LTD.
International Classes:
C08F2/22; C08F4/40; C08F8/12; C08F16/02; C08F2/24; C08F16/06; C08F18/00; C08F18/04; D01F6/14; (IPC1-7): C08F18/04; C08F2/24; C08F4/40; C08F8/12
Attorney, Agent or Firm:
Honda Ken
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