Polyacetal resin composition and process for producing the same

Details Polyacetal resin composition and process for producing the same Polyacetal resin composition and process for producing the same

2007-03-06

2007-03-06

Sanders, Kriellion A. (Department: 1714)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S088000, C524S091000, C524S094000, C524S100000, C524S102000, C524S238000, C524S240000, C524S291000, C524S394000, C524S400000, C524S430000, C524S433000, C524S436000, C524S442000, C524S495000, C524S054000

Reexamination Certificate

active

10609411

ABSTRACT:
About 0.001 to 1 part by weight of a phenol component (B1) and/or about 0.001 to 10 parts by weight of an amino acid (B2) are added relative to 100 parts by weight of a polyacetal resin (A) to prepare a polyacetal resin composition. The phenol component (B1) may be a novolak phenol-series resin, a phenol aralkyl-series resin, a polyvinyl phenol-series resin, a polyhydric phenol, a polyphenol, a catechin compound, or a lignin. The amino acid (B2) may be an α-amino acid, a β-amino acid, a γ-amino acid, a δ-amino acid, or a derivative of an amino acid. The polyacetal resin composition may further contain an antioxidant, a heat stabilizer, a processing stabilizer, a weather (light)-resistant stabilizer, or a coloring agent. The polyacetal resin composition ensures marked inhibition of formaldehyde emission.

REFERENCES:
patent: 6642289 (2003-11-01), Harashina et al.
patent: 6753363 (2004-06-01), Harashina
patent: 52-59646 (1977-05-01), None
patent: 61-145245 (1986-07-01), None
patent: 63-260949 (1988-10-01), None
patent: 5-98039 (1993-04-01), None
patent: 2001-72830 (2001-03-01), None
Kobunshi Ronbunshu (Japanese Journal of Polymer Science and Technology), vol. 48, No. 7, pp. 443 to 447 (Jul. 1991).

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