Abstract: The present invention provides a polyacetal resin composition having excellent mechanical characteristics with reduced generation of formaldehyde. To 100 parts by weight of (A1) a polyacetal resin having substantially straight chain molecular structure, there are added 0.1-20 parts by weight of (A2) a polyacetal resin having a branched or cross-linked molecular structure, 3-200 parts by weight of (B) a glass-base inorganic filler, and 0.001 to 3 parts by weight of (C) a boric acid compound.

Abstract: Provided is a polyacetal resin molded article having an excellent acid resistance, used for parts contacting with a liquid containing an acidic substance. Specifically, a molded article having excellent durability under direct contact with a liquid containing an acidic component is obtained by molding the composition of (A) 100 parts by weight of a polyacetal resin, (B) 0.01 to 5 parts by weight of an antioxidant, and (C) 0.01 to 10 parts by weight of a metal salt of fatty acid.

Abstract: The present invention provides a polyacetal resin composition having excellent mechanical characteristics with reduced generation of formaldehyde. To 100 parts by weight of (A1) a polyacetal resin having substantially straight chain molecular structure, there are added 0.1-20 parts by weight of (A2) a polyacetal resin having a branched or cross-linked molecular structure, 3-200 parts by weight of (B) a glass-base inorganic filler, and 0.001 to 3 parts by weight of (C) a boric acid compound.

Abstract: A wholly aromatic polyester amide liquid crystal resin including repeating units of: (I) a 6-hydroxy-2-naphthoic acid residue: 1 to 15 mol %, (II) a 4-hydroxybenzoic acid residue: 40 to 70 mol %, (III) an aromatic diol residue: 5 to 28.5 mol %, (IV) a 4-aminophenol residue: 1 to 20 mol %, and (V) an aromatic dicarboxylic acid residue: 6 to 29.5 mol %, and having a melting point of 270° C. to 370° C., and having a melt viscosity of 60 Pa.s to 200 Pa.s at a shear rate of 1000/sec at a temperature higher by 10° C. to 20° C. than this melting point is molten at a temperature of the melting point +40° C., and extruded at a rate of 0.3 kg/min or more and less than 5 kg/min to form a parison. A pair of molds arranged with the parison interposed there between are closed under a prescribed mold closing pressure, so that air is blown into the interior of the parison.

Abstract: A process for producing a transparent and heat-resistant container includes forming a sheet from a melt of a polyester resin having at least 80 mole % ester units derived from 1,3-propanediol and terephthalic acid or an ester-forming derivative thereof. The formed sheet is quenched and solidified so as to have relatively low crystallinity (i.e., less than 50%). The solidified low crystallinity film is then aged and shaped by thermoforming to obtain a container having relatively high crystallinity (i.e., greater than 50%, and preferably greater than 80%). The aging step is most preferably conducted at a temperature which satisfies the relationship represented by the following equation (1):Ta.ltoreq.Tccwherein Ta is the aging temperature (.degree.C.), and Tcc is the cold crystallization temperature (.degree.C.) as determined by differential thermal analysis at a rate of temperature increase of 10.degree. C./min.