Polyacetal resin composition and moldings
AssigneePolyplastics Co., Ltd.
InventorsHATSUHIKO HARASHINA, HAYATO KURITA, TATSUYA YAMADA
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Abstract
The polyacetal resin composition contains about 0.01-10 parts by weight of a glyoxyldiureide compound per 100 parts by weight of polyacetal resin. The glyoxyldiureide compound includes glyoxyldiureide and its derivatives (metal salts etc.). Optionally, about 0.01-10 parts by weight of a basic nitrogen-containing compound is further added. The basic nitrogen-containing compound includes melamine, melamine resin, and polyamide resin. Further, an antioxidant may be further added. The above composition contributes to stability, particularly heat stability, of polyacetal resin and suppression of emission of formaldehyde.
Claims18
A polyacetal resin composition comprising a polyacetal resin and a glyoxyldiureide compound.
A process for producing a polyacetal resin composition which comprises mixing a polyacetal resin with a glyoxyldiureide compound.
A shaped article as molded from (a) a polyacetal resin composition comprising a polyacetal resin and a glyoxyldiureide compound or (b) a polyacetal resin composition comprising a polyacetal resin, a glyoxyldiureide compound, and a basic nitrogen-containing compound, the emission of formaldehyde from which on 24-hour standing in a closed space at a temperature of 80° C. is not greater than 1.5 μg per cm2 surface area of the article.
Dependencies are inferred from the claim text.