| 摘要 |
PURPOSE:To obtain the title composition improved in weather resistance by mixing a polyacetal resin with a weathering agent (light stabilizer) and a polyester acrylic oligomer. CONSTITUTION:An at least dihydric alcohol (i) is esterified with an at least dibasic carboxylic acid (ii) and (meth)acrylic acid or its esterifiable derivative (iii) in the presence of an esterification catalyst to obtain a polyester type acrylic oligomer (c) of a viscosity (at 25 deg.C) <=20000cP, comprising an ester of component (i) with component (ii) and terminated with a residue of component (iii). A polyacetal resin (a) is mixed with 0.01-5wt.% at least one weathering agent (light stabilizer) (b) selected from among a benzotriazole, a benzophenone, an aromatic benzoate, a cyanoacrylate, an oxalic acid anilide and a hindered amine, 0.01-10wt.% component (c) and, optionally, a dye or a pigment, a lubricant, a nucleator, a mold release, a surfactant, a filler, etc., (d). |
