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Title:
PRODUCTION OF POLYACETAL
Document Type and Number:
Japanese Patent JPS62297309
Kind Code:
A
Abstract:
Polyacetal obtained by the polymerization of trioxane, for example, suspended in an organic solvent, in the presence of a comonomer (for example, ethylene oxide), is stabilized by hydrolysis in the heated state under pressure and then, after hydrolysis, the reaction mixture is depressurized to atmospheric pressure in order to release an aqueous phase containing the polymer and a vapor phase which contains formaldehyde and trioxane. According to the invention, the latter is recycled directly into the formaldehyde trimerization stage under reduced pressure.

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Inventors:
NIKORASU HARUDEI
Application Number:
JP14130487A
Publication Date:
December 24, 1987
Filing Date:
June 05, 1987
Export Citation:
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Assignee:
SOLVAY
International Classes:
C08G2/22; C08G2/18; (IPC1-7): C08G2/18
Attorney, Agent or Firm:
Hideto Asamura



 
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