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    • 6. 发明授权
    • Polyester aqueous dispersion and method for preparation thereof
    • 聚酯水分散体及其制备方法
    • US06521679B1
    • 2003-02-18
    • US09786205
    • 2001-03-02
    • Yasuo OkadaHidenori KayaSuguru Tokita
    • Yasuo OkadaHidenori KayaSuguru Tokita
    • C08J305
    • C08J3/03C08J2367/02C08L67/02C08L2201/50C08L2666/18
    • A polyester aqueous dispersion having excellent properties in waterproof, weatherproof, processibility and adhesion, which provides a large allowance for controlling liquid physical properties by post treatment and is advantageous in making dry powders from the dispersion, and an efficient method for preparing the aqueous dispersion at low costs in a simple manner. The polyester aqueous dispersion comprising (i) a water-insoluble polyester and (ii) a polyester containing a sulfonate group bound to a polymer in a concentration of 0.1 to 1.5 mmol equivalents when calculated as —SO3− group per gram of the polymer, and method for preparing a polyester aqueous dispersion comprises a step of melt-kneading a resin composition comprising the water-insoluble polyester (i) and polyester (ii) and a step of phase inversion of adding water or a basic aqueous solution to the molten kneaded mixture thereby to shift the resin composition into the aqueous dispersion.
    • 一种聚酯水性分散体,其具有优异的防水性,耐候性,可加工性和粘合性,通过后处理提供了大量的液体物理性能的限制,并且有利于从分散体制备干燥粉末,以及制备水性分散体的有效方法 低成本简单。 所述聚酯水性分散体包含(i)水溶性聚酯和(ii)含有磺酸盐基团的聚酯,所述磺酸盐基团以每克聚合物的-SO 3 - 基团计算,浓度为0.1〜1.5mmol当量的聚合物,以及 制备聚酯水分散体的方法包括熔融捏合包含水不溶性聚酯(i)和聚酯(ii)的树脂组合物的步骤和将水或碱性水溶液加入到熔融混炼混合物中的相转化步骤 从而将树脂组合物转移到水性分散体中。