Title:
ポリアセタール共重合体の製造方法
Document Type and Number:
Japanese Patent JP7096043
Kind Code:
B2
Abstract:
The purpose of the present invention is to provide a method for producing a polyacetal copolymer, in which any disturbances in mass production less affect the polymerization. The method is for producing a polyacetal copolymer from trioxane as a main monomer (a) and a comonomer (b) copolymerizable therewith, and comprises using a polymerization catalyst (c) obtained by mixing a heteropolyacid (B) represented by general formula (1) with a heteropolyacid salt (A) represented by general formula (2) in a mass ratio of 10≥(A)/(B)≥0.2. Hm[M1 x·M2 yOz]·nH2O (1) M3 m[M1 x·M2 yOz]·nH2O (2) [In formulae (1) and (2), M1 represents one or two central elements selected from between P and Si, M2 represents one or more coordination elements selected from among W, Mo, and V, M3 represents an alkali metal, x is an integer of 1-10, y is an integer of 6-40, z is an integer of 10-100, m is an integer of 1 or larger, and n is an integer of 0-50.]
Inventors:
Naohiro Kirai
Eiji Masuda
Eiji Masuda
Application Number:
JP2018066452A
Publication Date:
July 05, 2022
Filing Date:
March 30, 2018
Export Citation:
Assignee:
Polyplastics Co., Ltd.
International Classes:
C08G2/06; C08G2/10
Foreign References:
| WO2015002147A1 |
Attorney, Agent or Firm:
Masayuki Masabayashi
Hayashi Kazuyoshi
Hayashi Kazuyoshi