| 摘要 |
Modified thermoplastic polyester compositions are provided which comprise (a) a block poly(1,4-butylene terephthalate) ester copolymer or blend thereof with a linear polyester and (b) a modifier therefor comprising a combination of an acrylic or methacrylic grafted polymer of a conjugated diene, alone or in combination with a vinyl aromatic and an aromatic polycarbonate. The compositions can include (c) reinforcing glass fibers and/or (d) a flame retardant. Modifier (b) provides enhanced resistance to impact fracture, increased strength and improved resistance to heat distortion in articles molded from the compositions. |
