Title:
変色に対して安定化されたポリアセタール成形品
Document Type and Number:
Japanese Patent JP4280972
Kind Code:
B2
Abstract:
Polyacetal molded articles are effectively stabilized against unwanted discoloration comprising by incorporating a synergistic combination of antioxidants selected from the group consisting of (i) Pentaerythritol tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate]; and (ii) At least one compound selected from the group consisting of tris-(4-t-butyl-2,6-dimethyl-3-hydroxybenzyl) isocyanurate, ethylene-1,2-bis-(oxyethylene(3-t-butyl-4-hydroxy-5-methylhydrocinnamate)), hexamethylene-1,6-bis-(3,5-di-t-butyl-4-hydroxyhydrocinnamate) and the monoacrylate ester of 2,2'-methylenebis(6-tert-butyl-4-methylphenol); or (iii) Hexamethylene-1,6-bis-(3,5-di-t-butyl-4-hydroxyhydrocinnamate); and (iv) At least one compound selected from the group consisting of ethylene-1,2-bis-(oxyethylene(3-t-butyl-4-hydroxy-5-methylhydrocinnamate)) and tris-(4-t-butyl-2,6-dimethyl-3-hydroxybenzyl) isocyanurate.
Inventors:
Feature
Application Number:
JP2002585534A
Publication Date:
June 17, 2009
Filing Date:
April 23, 2002
Export Citation:
Assignee:
Ciba Holding Inc.
International Classes:
C08L59/00; C08K5/00; C08K5/134; C08K5/3492
Domestic Patent References:
| JP8127702A | ||||
| JP6340792A | ||||
| JP3200857A | ||||
| JP4239048A |
Attorney, Agent or Firm:
Calyx
Toshio Nakamura
Miyazaki Yoshio
Tsutomu Kato
Toshio Nakamura
Miyazaki Yoshio
Tsutomu Kato