Title:
METHOD FOR PRODUCING POLYOXYMETHYLENE RESIN COMPOSITION
Document Type and Number:
Japanese Patent JP2016094627
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a polyoxymethylene resin composition that can sufficiently suppress a generation amount of formaldehyde during molding without performing stabilization treatment for stabilizing an unstable terminal group of a crude oxymethylene copolymer.SOLUTION: The polyoxymethylene resin composition is produced by melting and kneading a hindered phenolic antioxidant and an ethylene methacrylic acid copolymer resin or an ethylene acrylic acid copolymer resin or a salt thereof with a crude oxymethylene copolymer having an unstable terminal group which has not been stabilized although a polymerization catalyst is deactivated after finishing the copolymerization without performing stabilization treatment for stabilizing the unstable terminal group. The thus-produced polyoxymethylene resin composition is suitably used for forming an extruded molded article because long-term discoloration and long-term degradation in physical properties is suppressed when the polyoxymethylene resin composition is extrusion-molded.SELECTED DRAWING: None
Inventors:
KADOMA TOMOHIRO
WATANABE KAZUFUMI
SHIMODA AKIHIDE
WATANABE KAZUFUMI
SHIMODA AKIHIDE
Application Number:
JP2016035533A
Publication Date:
May 26, 2016
Filing Date:
February 26, 2016
Export Citation:
Assignee:
POLYPLASTICS CO
International Classes:
C08L59/02; C08G2/00; C08K3/20; C08K5/098; C08K5/13; C08L23/08
Domestic Patent References:
JP2000239484A | 2000-09-05 | |||
JP2000017144A | 2000-01-18 | |||
JP2010037445A | 2010-02-18 | |||
JP2008031348A | 2008-02-14 | |||
JP2000017143A | 2000-01-18 | |||
JPS61145245A | 1986-07-02 |
Other References:
高野菊雄編, ポリアセタール樹脂ハンドブック, vol. 初版, JPN6017011440, 28 February 1992 (1992-02-28), JP, pages 47 - 58, ISSN: 0003730770
Attorney, Agent or Firm:
Masayuki Masabayashi
Hayashi Ichiyoshi
Hayashi Ichiyoshi