Title:
POLYACETAL RESIN COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2008/001557
Kind Code:
A1
Abstract:
Disclosed is a polyacetal resin composition excellent in workability, stability and weather (light) resistance, which enables to obtain a molded article greatly suppressed in generation of formaldehyde while being prevented from bleeding of the blended components. Specifically disclosed is a polyacetal resin composition wherein a hindered phenol antioxidant (B), at least one compound (C) selected from guanamine compounds (c-1) and hydrazide compounds (c-2), an hindered amine stabilizer (D) wherein nitrogen in a piperidine derivative having a steric hindrance group is tertiary, and an ultraviolet absorbent (E) are blended, in specific amounts at a specific blending ratio, into a polyacetal copolymer (A) which contains hemiformal terminal groups of not more than 1.0 mmol/kg, formyl terminal groups of not more than 2.0 mmol/kg, and unstable terminal groups of not more than 0.5% by weight.
Inventors:
HASE HIROYUKI (JP)
Application Number:
PCT/JP2007/060294
Publication Date:
January 03, 2008
Filing Date:
May 14, 2007
Export Citation:
Assignee:
POLYPLASTICS CO (JP)
HASE HIROYUKI (JP)
HASE HIROYUKI (JP)
International Classes:
C08L59/04; C08K5/13; C08K5/20; C08K5/24; C08K5/3432; C08K5/3475; C08K5/3477
Domestic Patent References:
| WO2005044917A1 | 2005-05-19 | |||
| WO2004058875A1 | 2004-07-15 | |||
| WO2004058875A1 | 2004-07-15 |
Foreign References:
| JP2002212384A | 2002-07-31 | |||
| JP2000239484A | 2000-09-05 | |||
| JP2000044769A | 2000-02-15 | |||
| JPH10182928A | 1998-07-07 | |||
| JPH11335518A | 1999-12-07 | |||
| JP2000026704A | 2000-01-25 | |||
| JP2003113289A | 2003-04-18 | |||
| JPS62190248A | 1987-08-20 | |||
| JP2005112995A | 2005-04-28 | |||
| JPS6136339A | 1986-02-21 | |||
| JPH06256623A | 1994-09-13 | |||
| EP1688461A1 | 2006-08-09 | |||
| JP2002212384A | 2002-07-31 | |||
| JP2000239484A | 2000-09-05 | |||
| JP2000044769A | 2000-02-15 | |||
| JP2001011143A | 2001-01-16 | |||
| JPH06179671A | 1994-06-28 | |||
| JPH0710871A | 1995-01-13 | |||
| JPS4741120B | ||||
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| JP2000154181A | 2000-06-06 |
Other References:
See also references of EP 2036949A4
Attorney, Agent or Firm:
FURUYA, Satoshi et al. (2-17-8 Nihonbashi-Hamach, Chuo-ku Tokyo, JP)
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