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    • 2. 发明授权
    • Additive package for thermoplastic condensation polymers
    • 用于热塑性聚合物的添加剂包装
    • US07544387B2
    • 2009-06-09
    • US11665519
    • 2005-10-20
    • Joy Sawyer Bloom
    • Joy Sawyer Bloom
    • B05D7/00
    • C08K5/1515C08J3/201C08J2367/02C08K9/04
    • The invention is directed to a thermoplastic condensation polymer chain extender additive package for reducing the molecular weight loss of a thermoplastic condensation polymer during a heated process comprising a chain extender composition selected from the group consisting of (a) a mixture of a chain extending agent and a water-bearing particulate material (b) a water-bearing particulate material surface treated with a chain extending agent or (c) a combination of (a) and (b). The water-bearing particulate material can be titanium dioxide pigment, the chain extending agent can be a multifunctional epoxy compound and the condensation polymer can be polyethylene terephthalate, polybutylene terephthalate or polycarbonate.
    • 本发明涉及一种用于在加热过程中降低热塑性缩聚物的分子量损失的热塑性缩聚物增链剂添加剂包含增链剂组合物,该增链剂组合物选自(a)扩链剂和 含水颗粒材料(b)用链增长剂处理的含水颗粒材料表面或(c)(a)和(b)的组合。 含水颗粒材料可以是二氧化钛颜料,扩链剂可以是多官能环氧化合物,缩聚物可以是聚对苯二甲酸乙二醇酯,聚对苯二甲酸丁二醇酯或聚碳酸酯。