| 摘要 |
PROBLEM TO BE SOLVED: To obtain a polyethylene terephthalate resin composition which can give a molding uniformly colored in black and having good surface gloss, light resistance, mechanical properties and hot dimensional stability by mixing a polyethylene terephthalate resin with nigrosine and to obtain a molding prepared therefrom. SOLUTION: Except when a composition containing a fibrous reinforcement and a composition freed from a fibrous reinforcement are distinguished from each other, the composition is common to both. The polyethylene terephthalate resin is suitably one containing at least 60mol% repeating units of ethylene terephthalate or may be one containing an aromatic dicarboxylic acid other than terephthalic acid and a glycol other than ethylene glycol as the comonomers. Nigrosine is a black azine condensate mixture described as e.g. C.I. Solvent Black in the color index. the nigrosine content of the composition is 0.01-10wt.% based on the polyethylene terephthalate resin, and it is 20-50wt.% in the case of a masterbatch. |
