| 摘要 |
PURPOSE: A poly(butylene terephthalate) composition is provided to improve flexibility, hydrolysis resistance, size stability, heat resistance and extrusion formability. CONSTITUTION: The poly(butylene terephthalate) composition comprises 100 parts by weight of a poly(butylene terephthalate) resin; 0.1-1.0 parts by weight of an amine- or phenol-based heat resistant agent; 0.05-1.0 parts by weight of a cycloaminoether compound; and 0.01-0.5 parts by weight of bis(p-ethylbenzylidene)sorbitol as a nucleating agent. The cycloaminoether compound is represented by the formula 1, wherein A and B are a substituted or unsubstituted alkyl group; the iminoether ring is composed of 5-7 atoms; X is an alkylene of C2-C10, an aromatic component such as phenylene, naphthalene and biphenylene, an aliphatic component such as cyclohexylene and cyclohexanedimethylene, or a heteroatomic cyclic compound.
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