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41.发明授权
公开(公告)号：US6027818A
公开(公告)日：2000-02-22
申请号：US330268
申请日：1999-06-11
IPC分类号： B60R21/215 , C08G59/50 , C08G63/672 , C08G63/91 , C08L63/00 , C08L67/02 , B32B27/10 , C08F20/00
CPC分类号： C08L67/025 , C08G59/50 , C08G63/916 , C08L63/00 , B60R21/215 , C08G63/672 , Y10T428/31786 , Y10T428/3179
摘要： Copolyether ester elastomers are provided which contain epoxide compounds. The compositions show improved bloom resistance in the presence of diamines with minimum increase in melt viscosity. Also disclosed are methods to improve appearance and eliminate bloom from finished products comprising thermoplastic copolyesters by lowering the level of acid terminated oligomers in the thermoplastic copolyesters with epoxide compounds.
摘要翻译： 提供含有环氧化合物的共聚醚酯弹性体。 组合物在二胺的存在下显示出改善的耐花性，其熔体粘度的增加最小。 还公开了通过用环氧化物化合物降低热塑性共聚酯中的酸封端的低聚物的水平来改善外观并消除包含热塑性共聚酯的成品的绽放的方法。
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公开(公告)号：US4016349A
公开(公告)日：1977-04-05
申请号：US627460
申请日：1975-10-30
CPC分类号： C08F6/02
摘要： Vanadium catalyst residues can be removed from solutions of organic solvents of homopolymers of .alpha.-olefins or their copolymers with hydrocarbon monomers by first contacting at a temperature of about room temperature to about 140.degree. C. the polymer solutions with polar liquid extractants supported on an inert, finely divided, solid material, such as diatomaceous silica, silica gel, alumina, or molecular sieves, then separating the solution from the solid material. Water is the preferred polar liquid, and diatomaceous silica is the preferred supporting material. Polymers recovered from solutions treated according to the process of this invention have a much lesser proportion of vanadium contaminants than those recovered from untreated solutions. This vanadium removal process is simple and inexpensive.
摘要翻译： 可以在约室温至约140℃的温度下首先接触α-烯烃均聚物或其与烃单体的共聚物的有机溶剂的溶液中，将钒催化剂残余物除去，负载在惰性气体上的极性液体萃取剂的聚合物溶液 精细分散的固体材料，例如硅藻土，硅胶，氧化铝或分子筛，然后将溶液与固体材料分离。 水是优选的极性液体，硅藻土是优选的支撑材料。 从根据本发明方法处理的溶液中回收的聚合物的钒污染物比从未处理溶液中回收的那些少得多。 这种钒去除工艺简单而便宜。
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