Title:
ポリアセタール樹脂組成物の製造方法
Document Type and Number:
Japanese Patent JP6739165
Kind Code:
B2
Abstract:
Provided is a polyacetal resin composition which is more versatile. In the present invention, an aliphatic polycarboxylic acid (e) having four or more carbons and two or more carboxyl groups and a hindered-phenol antioxidant (f) are incorporated into a polyacetal copolymer obtained by copolymerizing trioxane as a major monomer (a) with a cyclic ether and/or cyclic formal each having at least one carbon-carbon bond as a comonomer (b) using a specific heteropoly acid as a polymerization catalyst (c), adding, to the resultant reaction product, a compound (d) which is any of the carbonates, hydrogen carbonates, and carboxylates of alkali metal elements or alkaline-earth metal elements, the hydrates of these, and the hydroxides of alkali metal elements or alkaline-earth metal elements, and melt-kneading the mixture to deactivate the polymerization catalyst (c).
Inventors:
Tomohiro Kadoma
Application Number:
JP2015245483A
Publication Date:
August 12, 2020
Filing Date:
December 16, 2015
Export Citation:
Assignee:
Polyplastics Co., Ltd.
International Classes:
C08L59/04; C08K5/092
Domestic Patent References:
| JP2015101599A | ||||
| JP2014105278A | ||||
| JP2014105279A | ||||
| JP2000017144A |
Attorney, Agent or Firm:
Masayuki Masabayashi
Hayashi Ichiyoshi
Hayashi Ichiyoshi