Title:
METHOD FOR ASSESSING DEGRADATION
Document Type and Number:
Japanese Patent JP2011162707
Kind Code:
A
Abstract:
To provide a method for assessing degradation of a resin molding obtained by molding a resin composition including a polyacetal copolymer, by analyzing causes of degradation derived from immersing the molding in a hydrocarbon-based liquid, which can assess even slight degradation at an initial period of degradation.
The degradation of the resin composition is assessed by assessing molecular weight change of the polyacetal copolymer from the total peak area of peaks each having peak top from 8.04 ppm to 8.07 ppm of respective measured results of 1H-NMR measurement of a plurality of polyacetal copolymers different in immersion time when immersed in the hydrocarbon-based liquid.
Inventors:
KAGEYAMA YUKIHIKO
KOBASHI TOSHIHIRO
HARASHINA HATSUHIKO
KOBASHI TOSHIHIRO
HARASHINA HATSUHIKO
Application Number:
JP2010028861A
Publication Date:
August 25, 2011
Filing Date:
February 12, 2010
Export Citation:
Assignee:
POLYPLASTICS CO
International Classes:
C08G2/00; C08L59/02; G01N24/08
Domestic Patent References:
| JP2007534787A | 2007-11-29 | |||
| JP2007534787A | 2007-11-29 |
Other References:
JPN6013039633; 和田 徹， 八尋 修二， 田村 亘弘: '「ポリアセタール樹脂のＮＭＲによる解析」' 高分子学会予稿集 Ｖｏｌ． ４１， Ｎｏ． １０, 19920910, ｐ． ４３１０-４３１２, 社団法人高分子学会
JPN6013039634; ＴＯＳＨＩＯ ＯＧＡＷＡ， ＷＡＴＡＲＵ ＩＳＨＩＴＯＢＩ， ＫＡＺＵＹＡ ＪＩＮＴＡ: '"Ｐｒｏｔｏｎ-ＮＭＲ ｓｔｕｄｉｅｓ ｏｆ ｐｏｌｙａｃｅｔａｌ ｃｏｐｏｌｙｍｅｒｓ"' Ｊｏｕｒｎａｌ ｏｆ Ａｐｐｌｉｅｄ Ｐｏｌｙｍｅｒ Ｓｃｉｅｎｃｅ Ｖｏｌ． ３８， Ｎｏ． １, 19890705, ｐ． ８７-９４, Ｊｏｈｎ Ｗｉｌｅｙ ＆ Ｓｏｎｓ， Ｉｎｃ．
JPN6013039633; 和田 徹， 八尋 修二， 田村 亘弘: '「ポリアセタール樹脂のＮＭＲによる解析」' 高分子学会予稿集 Ｖｏｌ． ４１， Ｎｏ． １０, 19920910, ｐ． ４３１０-４３１２, 社団法人高分子学会
JPN6013039634; ＴＯＳＨＩＯ ＯＧＡＷＡ， ＷＡＴＡＲＵ ＩＳＨＩＴＯＢＩ， ＫＡＺＵＹＡ ＪＩＮＴＡ: '"Ｐｒｏｔｏｎ-ＮＭＲ ｓｔｕｄｉｅｓ ｏｆ ｐｏｌｙａｃｅｔａｌ ｃｏｐｏｌｙｍｅｒｓ"' Ｊｏｕｒｎａｌ ｏｆ Ａｐｐｌｉｅｄ Ｐｏｌｙｍｅｒ Ｓｃｉｅｎｃｅ Ｖｏｌ． ３８， Ｎｏ． １, 19890705, ｐ． ８７-９４, Ｊｏｈｎ Ｗｉｌｅｙ ＆ Ｓｏｎｓ， Ｉｎｃ．
JPN6013039634; ＴＯＳＨＩＯ ＯＧＡＷＡ， ＷＡＴＡＲＵ ＩＳＨＩＴＯＢＩ， ＫＡＺＵＹＡ ＪＩＮＴＡ: '"Ｐｒｏｔｏｎ-ＮＭＲ ｓｔｕｄｉｅｓ ｏｆ ｐｏｌｙａｃｅｔａｌ ｃｏｐｏｌｙｍｅｒｓ"' Ｊｏｕｒｎａｌ ｏｆ Ａｐｐｌｉｅｄ Ｐｏｌｙｍｅｒ Ｓｃｉｅｎｃｅ Ｖｏｌ． ３８， Ｎｏ． １, 19890705, ｐ． ８７-９４, Ｊｏｈｎ Ｗｉｌｅｙ ＆ Ｓｏｎｓ， Ｉｎｃ．
JPN6013039633; 和田 徹， 八尋 修二， 田村 亘弘: '「ポリアセタール樹脂のＮＭＲによる解析」' 高分子学会予稿集 Ｖｏｌ． ４１， Ｎｏ． １０, 19920910, ｐ． ４３１０-４３１２, 社団法人高分子学会
JPN6013039634; ＴＯＳＨＩＯ ＯＧＡＷＡ， ＷＡＴＡＲＵ ＩＳＨＩＴＯＢＩ， ＫＡＺＵＹＡ ＪＩＮＴＡ: '"Ｐｒｏｔｏｎ-ＮＭＲ ｓｔｕｄｉｅｓ ｏｆ ｐｏｌｙａｃｅｔａｌ ｃｏｐｏｌｙｍｅｒｓ"' Ｊｏｕｒｎａｌ ｏｆ Ａｐｐｌｉｅｄ Ｐｏｌｙｍｅｒ Ｓｃｉｅｎｃｅ Ｖｏｌ． ３８， Ｎｏ． １, 19890705, ｐ． ８７-９４, Ｊｏｈｎ Ｗｉｌｅｙ ＆ Ｓｏｎｓ， Ｉｎｃ．
Attorney, Agent or Firm:
Masayuki Masabayashi
Hayashi Ichiyoshi
Hayashi Ichiyoshi
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