Title:
POLYACETAL COPOLYMER, METHOD FOR PRODUCING POLYACETAL COPOLYMER, AND POLYACETAL RESIN COMPOSITION
Document Type and Number:
Japanese Patent JP2017160333
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a polyacetal copolymer which is excellent in mechanical physical properties, durability, thermal aging properties, moldability and chemical resistance, reduces a generation amount of formaldehyde, and is excellent in recycling properties.SOLUTION: In a polyacetal copolymer which contains a specific oxyalkylene unit of 0.000033 mol or more and 0.005 mol or less per 1 mol of an oxymethylene unit in a polymer containing repeating oxymethylene units (-CHO-) as a main component, a ratio (Mw/Mn) of a weight average molecular weight (Mw) and a number average molecular weight (Mn) by size exclusion chromatography (SEC) in combination of a multi-angle light-scattering detector and a differential refractometer detector is 5 or more and 11 or less.SELECTED DRAWING: None
Inventors:
KONDO YOSHIKIMI
TOKI MAKOTO
TOKI MAKOTO
Application Number:
JP2016045947A
Publication Date:
September 14, 2017
Filing Date:
March 09, 2016
Export Citation:
Assignee:
ASAHI KASEI CORP
International Classes:
C08G2/12; C08L59/04; C08L101/02
Domestic Patent References:
| JP2011068855A | 2011-04-07 | |||
| JP2003342442A | 2003-12-03 | |||
| JPH07286024A | 1995-10-31 | |||
| JP2013163711A | 2013-08-22 | |||
| JPH0347818A | 1991-02-28 | |||
| JP2000119357A | 2000-04-25 | |||
| JPH08208786A | 1996-08-13 | |||
| JP2015505575A | 2015-02-23 |
Foreign References:
| WO2000017247A1 | 2000-03-30 |
Attorney, Agent or Firm:
Yoshiyuki Inaba
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito