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    • 1. 发明申请
    • Organic thiol metal-free stabilizers and plasticizers for halogen-containing polymers
    • 用于含卤聚合物的有机硫醇无金属稳定剂和增塑剂
    • US20050049307A1
    • 2005-03-03
    • US10963480
    • 2004-10-12
    • William StarnesBin Du
    • William StarnesBin Du
    • A61K31/225C07C323/22C11D1/28
    • C07C323/52C07C323/62
    • Organic thiol compounds based on pentaerythritol and dipentaerythritol are described herein. More specifically, the compounds of the present invention are mixed esters of pentaerythritol and dipentaerythritol having at least one sulfhydryl group and preferably a plurality of sulfhydryl groups as well as at least one non-thiol-containing group. The organic thiol compounds are utilized to plasticize and/or heat stabilize halogen-containing polymer compositions especially poly(vinyl chloride) compositions. The compositions are substantially free or free of metal-based stabilizers, Lewis acids and terpenes. The compounds of the present invention are ideally utilized in polymers normally susceptible to deterioration and color change which can occur during processing of the polymer or exposure of the polymer to certain environments and surprisingly also serve as excellent plasticizers.
    • 本文描述了基于季戊四醇和二季戊四醇的有机硫醇化合物。 更具体地说,本发明的化合物是具有至少一个巯基,优选多个巯基的季戊四醇和二季戊四醇的混合酯以及至少一个非硫醇基。 有机硫醇化合物用于塑化和/或热稳定含卤聚合物组合物,特别是聚(氯乙烯)组合物。 组合物基本上不含或不含金属基稳定剂,路易斯酸和萜烯。 本发明的化合物理想地用于通常易于劣化和变色的聚合物,其可能在聚合物加工过程中发生或在聚合物暴露于某些环境中时出现,并且令人惊奇地也用作优异的增塑剂。
    • 6. 发明申请
    • PVC Graft Copolymer Methods and Compositions
    • PVC接枝共聚物方法和组合物
    • US20070032602A1
    • 2007-02-08
    • US11461650
    • 2006-08-01
    • William Starnes
    • William Starnes
    • C08F297/02
    • C08F259/02C08L51/003C08L2666/02
    • Methods are described for preparing graft copolymers from poly(vinyl chloride) or vinyl chloride copolymers comprising reacting these materials with sources of selected metal-centered free radicals in the presence of one or more monomers that can undergo free-radical addition polymerization. The metal-centered free radicals used are capable of abstracting chlorine atoms from the starting polymer to form C-centered radicals that add to the monomer(s) in order to start the growth of branches via a free-radical route. This method is an effective method for producing PVC graft copolymers, and can be used to produce PVC graft copolymers having novel compositions. The methods of the invention are particularly useful for providing highly branched PVC graft copolymers.
    • 描述了从聚(氯乙烯)或氯乙烯共聚物制备接枝共聚物的方法,包括在一种或多种可进行自由基加成聚合的单体的存在下使这些材料与选定的金属中心自由基的源反应。 所用的金属中心自由基能够从起始聚合物中提取氯原子以形成加入单体的C中心自由基,以便通过自由基途径开始分支生长。 该方法是生产PVC接枝共聚物的有效方法,可用于生产具有新型组成的PVC接枝共聚物。 本发明的方法特别适用于提供高度支化的PVC接枝共聚物。