To obtain a polyacetal resin composition controlling formaldehyde emission at an extremely low level, especially keeping a formaldehyde emission amount at a low level even if subjected to repeated heat history for production of colored product and recycled use of molding.
The polyacetal resin composition is obtained by mixing (A) 100 parts wt. of a polyacetal copolymer having ≤1.0mmol/kg terminal hemiformal group content, ≤2.0mmol/kg terminal formyl group content and ≤0.5 wt.% unstable terminal group content with (B) 0.01-5.0 parts wt. of hindered phenol-based antioxidant, (C) 0.01-5.0 parts wt. of guanamine-based compound, (D) 0.01-5.0 parts wt. of an organic carboxylic acid metal salt and (E) 0.01-5.0 parts wt. of a long-chain fatty acid amide and melting and kneading the mixture.
SHIKATO OSAMU
| JP2005112995A | 2005-04-28 | |||
| JPH0314860A | 1991-01-23 | |||
| JP2001026719A | 2001-01-30 |
| WO2004058884A1 | 2004-07-15 | |||
| WO2005044917A1 | 2005-05-19 |
Takahiko Mizobe
Shinji Mochida
Yoshitsune Kazumasa
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