High-impact polybutylene terephthalate
    1.
    发明授权
    High-impact polybutylene terephthalate 失效
    高效聚对苯二甲酸丁二醇酯

    公开(公告)号:US4292233A

    公开(公告)日:1981-09-29

    申请号:US165259

    申请日:1980-07-02

    CPC分类号: C08L67/02

    摘要: The toughness of polybutylene terephthalate can be considerably improved by the addition of an ABS-graft copolymer having a relatively high content of graft base and a closely defined particle size; the typical properties of polybutylene terephthalate, such as its high dimensional heat stability, hardness and rigidity, are not substantially reduced. The products show an excellent multiaxial impact strength.

    摘要翻译: 通过添加具有相对高的接枝基质含量和紧密限定的粒度的ABS接枝共聚物,可显着提高聚对苯二甲酸丁二醇酯的韧性; 聚对苯二甲酸丁二醇酯的典型性能,如其高尺寸热稳定性,硬度和刚度,并不显着降低。 该产品具有优异的多轴冲击强度。

    Block copolyesters which crystallize rapidly
    6.
    发明授权
    Block copolyesters which crystallize rapidly 失效
    封闭共聚酯快速结晶

    公开(公告)号:US4223106A

    公开(公告)日:1980-09-16

    申请号:US730208

    申请日:1976-10-06

    CPC分类号: C08G63/00 C08G63/66

    摘要: Polyethylene terephthalate copolymers comprising (I) blocksegments having a glass transition temperature below 0.degree. C. and (II) polyethylene terephthalate segments modified with certain diols having 3 to 10 carbon atoms, have an excellent rate of crystallization and necessitate mould temperatures of below 100.degree. C.

    摘要翻译: 包含(I)玻璃化转变温度低于0℃的块状物的聚对苯二甲酸乙二醇酯共聚物和(II)用某些具有3-10个碳原子的二醇改性的聚对苯二甲酸乙二醇酯链段具有优异的结晶速率,并且模具温度低于100℃ C。