Title:
PRODUCTION METHOD FOR POLYOXYMETHYLENE
Document Type and Number:
Japanese Patent JP2023015897
Kind Code:
A
Abstract:
To provide a method for simply at high yield, producing polyoxymethylene low in content of low molecular weight component.SOLUTION: Disclosed is a method for producing polyoxymethylene by polymerizing at least one monomer selected from the group consisting of trioxane, cyclic ether and cyclic formal. The method includes a polymerization process of obtaining polyoxymethylene by mixing a monomer with a catalyst solution to polymerize. The catalyst solution includes tin tetrachloride and aliphatic hydrocarbon solvent. The catalyst solution is added so that in the polymerization process, the molar number of tin tetrachloride is in a range of 5.0×10-6 to 1.0×10-4 based on total molar number of the monomer.SELECTED DRAWING: None
Inventors:
ASAKAWA TOMOHITO
Application Number:
JP2021119972A
Publication Date:
February 01, 2023
Filing Date:
July 20, 2021
Export Citation:
Assignee:
ASAHI KASEI CORP
International Classes:
C08G2/10
Attorney, Agent or Firm:
Kenji Sugimura
Mitsutsugu Sugimura
Koichiro Kami
Mitsutsugu Sugimura
Koichiro Kami