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31. 发明授权

US4111887A Reinforced polyoxymethylene molding composition capable of forming composite articles exhibiting improved physical properties 失效
标题翻译：形成复合材料的增强聚甲基乙烯模塑组合物展现改进的物理性能
公开(公告)号：US4111887A
公开(公告)日：1978-09-05
申请号：US846663
申请日：1977-10-28
申请人： Jay R. Shaner , Robert Edelman
发明人： Jay R. Shaner , Robert Edelman
IPC分类号： C08L59/02 , C08L71/00 , C08L79/08 , C08L71/02
CPC分类号： C08L59/02 , C08L71/00 , C08L79/08
摘要： An improved fiber reinforced polyoxymethylene molding composition is provided which when molded forms a composite article having improved physical properties (e.g., tensile strength and Izod impact strength). In admixture with the polyoxymethylene polymer and fibrous reinforcement (e.g., glass fiber) is provided a minor amount (as defined) of a certain polycarbodiimide (as defined) or a combination of the polycarbodiimide and a high molecular weight thermoplastic phenoxy resin. It is believed that the polycarbodiimide either alone or in combination with the thermoplastic phenoxy resin functions primarily by a complex mechanism which is incapable of simple explanation to enhance the adhesion between the chemical functionality of the oxymethylene polymer chain and the fibrous reinforcement.

32. 发明授权

US4110302A Reinforced polycarbodiimide modified polyalkylene terephthalate 失效
标题翻译：增强聚碳化二亚胺改性聚对苯二甲酸亚烷基酯
公开(公告)号：US4110302A
公开(公告)日：1978-08-29
申请号：US775124
申请日：1977-03-07
申请人： Norman W. Thomas , Frank M. Berardinelli , Robert Edelman
发明人： Norman W. Thomas , Frank M. Berardinelli , Robert Edelman
IPC分类号： C08L67/00 , C08G63/00 , C08G63/91 , C08G69/44 , C08K5/03 , C08K7/04 , C08G63/46 , C08G63/76
CPC分类号： C08G69/44
摘要： Molding resin compositions comprising a polycarbodiimide modified polyalkylene terephthalate polymer (polypropylene terephthalate, polybutylene terephthalate, or mixtures thereof) and a reinforcing agent such as glass fibers have been found to exhibit improved impact strength and thus are useful in various molding applications in order to prepare articles of manufacture having, e.g., industrial (e.g., gears, bearings), automotive (e.g., automotive distributor caps, distributor rotors), and electrical (e.g., motor end caps, brush holders) applications. These molding resin compositions are particularly useful in certain automotive, industrial, and electrical applications where greater impact strength may be required to extend the useful life of various articles of manufacture which may be subjected to occasional or continuous shock or impact.These molding resin compositions may be prepared by intimately admixing in the molten state a reinforcing agent such as glass fibers with a polycarbodiimide modified polyalkylene terephthalate polymer formed from the reaction between a polyalkylene terephthalate polymer which is the reaction product of terephthalic acid or a dialkyl ester of terephthalic acid and a glycol selected from the group consisting of trimethylene glycol, tetramethylene glycol, and mixtures thereof, and a polycarbodiimide which is both (1) derived from at least one aromatic diisocyanate which is either unsubstituted or contains up to one methyl substituent on each aromatic ring, and (2) contains at least two carbodiimide units per polycarbodiimide molecule. The components of the composition are preferably prepared by charging the polyalkylene terephthalate to the hopper of a melt screw extruder and adding the polycarbodiimide and reinforcing agent downstream in the extruder--e.g., in the vent port or other side feed port of the extruder.
摘要翻译：已经发现包含聚碳二亚胺改性的聚对苯二甲酸亚烷基酯聚合物（聚对苯二甲酸丙二醇酯，聚对苯二甲酸丁二酯或其混合物）和增强剂如玻璃纤维的成型树脂组合物表现出改善的冲击强度，因此可用于各种模塑应用中以制备制品（例如，齿轮，轴承），汽车（例如，汽车分配器帽，分配器转子）和电气（例如，电动机端盖，电刷架）应用的制造。这些模塑树脂组合物在某些汽车，工业和电气应用中特别有用，其中可能需要较大的冲击强度以延长可能经受偶尔或连续的冲击或冲击的各种制造制品的使用寿命。

33. 发明授权

US4071503A Polycarbodiimide modification of polyesters for extrusion applications 失效
标题翻译：用于挤出应用的聚酯的聚碳化二亚胺改性
公开(公告)号：US4071503A
公开(公告)日：1978-01-31
申请号：US715946
申请日：1976-08-19
申请人： Norman W. Thomas , Frank M. Berardinelli , Robert Edelman
发明人： Norman W. Thomas , Frank M. Berardinelli , Robert Edelman
IPC分类号： C08G63/00 , B29B7/00 , B29C47/00 , B29C47/88 , B29C47/92 , C08G63/682 , C08G73/00 , C08G73/16 , C08L67/02 , C08G63/46 , B29C5/06
CPC分类号： C08L67/02
摘要： There is disclosed a process for preparing polycarbodiimide modified thermoplastic polyesters having unique rheological properties which include increased intrinsic viscosity and melt strength. These polycarbodiimide modified thermoplastic polyesters are prepared by reacting the carboxyl end groups of thermoplastic saturated polyesters which are in a molten state with the polycarbodiimide groups of at least one polycarbodiimide such as poly (4,4'-diphenyl-methane carbodiimide) which both (a) is derived from at least one aromatic diisocyanate which is either unsubstituted or contains up to one methyl substituent on each aromatic ring, and (b) contains at least three carbodiimide units per polycarbodiimide molecule.The resulting polycarbodiimide modified thermoplastic polyester has improved melt strength and intrinsic viscosity and a decreased number of carboxylic acid end groups. These improved melt strength polyesters also have improved die swell and shear sensitivity characteristics and are generally useful in extrusion applications such as blow molding.
摘要翻译：公开了一种制备具有独特流变性能的聚碳二亚胺改性热塑性聚酯的方法，其包括增加的特性粘度和熔体强度。这些聚碳化二亚胺改性的热塑性聚酯通过使熔融状态的热塑性饱和聚酯的羧基端基与至少一种聚碳二亚胺的聚碳二亚胺基团（例如聚（4,4'-二苯基 - 甲烷碳化二亚胺））（）衍生自至少一种芳族二异氰酸酯，其是未取代的或在每个芳族环上含有至多一个甲基取代基，和（b）每个聚碳二亚胺分子含有至少三个碳二亚胺单元。

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