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公开(公告)号：US4219527A
公开(公告)日：1980-08-26
申请号：US956532
申请日：1978-10-31
CPC分类号： C08G63/20 , B29C49/0005
摘要： A process is disclosed for modifying polyethylene terephthalate so that the polyethylene terephthalate may be processed into plastic containers using conventional extrusion blow molding equipment. The polyethylene terephthalate is modified by the incorporation into a polyethylene terephthalate prepolymer of a chain branching agent and a chain terminating agent. The prepolymer is subsequently solid-state polymerized to form a polyethylene terephthalate polymer having high zero shear rate melt viscosity and shear sensitivity. This modified polyethylene terephthalate polymer may be extrusion blow molded in intermittent and continuous processes.
摘要翻译： 公开了一种用于改性聚对苯二甲酸乙二醇酯的方法，使得聚对苯二甲酸乙二醇酯可以使用常规挤出吹塑设备加工成塑料容 聚对苯二甲酸乙二醇酯通过掺入链支化剂和链终止剂的聚对苯二甲酸乙二醇酯预聚物中进行改性。 随后将预聚物固态聚合以形成具有高零剪切速率熔融粘度和剪切敏感性的聚对苯二甲酸乙二醇酯聚合物。 该改性的聚对苯二甲酸乙二醇酯聚合物可以以间歇和连续的方法挤出吹塑成型。
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公开(公告)号：US4161579A
公开(公告)日：1979-07-17
申请号：US894674
申请日：1978-04-10
IPC分类号： C08G63/00 , C08G63/12 , C08G63/20 , C08G63/682 , C08G63/685 , C08G63/78 , C08G63/80 , C08G63/76 , C08G63/70
摘要： A process is disclosed for modifying polyethylene terephthalate so that the polyethylene terephthalate may be processed into plastic containers using conventional extrusion blow molding equipment. The polyethylene terephthalate is modified by the incorporation into a polyethylene terephthalate prepolymer of a chain branching agent and a chain terminating agent. The prepolymer is subsequently solid-state polymerized to form a polyethylene terephthalate polymer having high zero shear rate melt viscosity and shear sensitivity. This modified polyethylene terephthalate polymer may be extrusion blow molded in intermittent and continuous processes.
摘要翻译： 公开了一种用于改性聚对苯二甲酸乙二醇酯的方法，使得聚对苯二甲酸乙二醇酯可以使用常规挤出吹塑设备加工成塑料容 聚对苯二甲酸乙二醇酯通过掺入链支化剂和链终止剂的聚对苯二甲酸乙二醇酯预聚物中进行改性。 随后将预聚物固态聚合以形成具有高零剪切速率熔融粘度和剪切敏感性的聚对苯二甲酸乙二醇酯聚合物。 该改性的聚对苯二甲酸乙二醇酯聚合物可以以间歇和连续的方法挤出吹塑成型。
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公开(公告)号：US4110302A
公开(公告)日：1978-08-29
申请号：US775124
申请日：1977-03-07
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。
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4.发明授权
公开(公告)号：US4071503A
公开(公告)日：1978-01-31
申请号：US715946
申请日：1976-08-19
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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5.发明授权Blend of polyalkylene terephthalate and wholly aromatic polyester and process for producing the same 失效聚对苯二甲酸亚烷基酯和全芳族聚酯的共混物及其制备方法
公开(公告)号：US4408022A
公开(公告)日：1983-10-04
申请号：US330987
申请日：1981-12-15
摘要： A process is provided for forming a novel polymer blend which exhibits an anisotropic melt phase wherein there is chemical interaction between previously formed polymeric blend components to yield a product which is capable of forming shaped articles having highly satisfactory mechanical properties. The process comprises intimately mixing together approximately 50 to 75 percent by weight of polyalkylene terephthalate and 25 to 50 percent by weight of a melt processable polyester which is capable of forming an anisotropic melt phase. A post-polymerization subsequently is conducted in the solid phase in a non-oxidizing atmosphere at a temperature within the range of approximately 250.degree. to 300.degree. C. for a period of time in the range approximately 8 to 72 hours to yield the desired chemical interaction between the previously formed polymeric blend components.
摘要翻译： 提供了一种形成新型聚合物共混物的方法，其显示各向异性熔融相，其中在先前形成的聚合物共混物组分之间存在化学相互作用，以产生能够形成具有非常令人满意的机械性能的成型制品的产品。 该方法包括将约50至75重量％的聚对苯二甲酸亚烷基酯和25至50重量％的能够形成各向异性熔融相的可熔融加工的聚酯紧密混合在一起。 随后在非氧化性气氛中，在大约250℃至300℃的温度范围内，在固相中进行后聚合，时间约为8〜72小时，得到所需化学物质 先前形成的聚合物共混物组分之间的相互作用。
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公开(公告)号：US3943199A
公开(公告)日：1976-03-09
申请号：US490996
申请日：1974-07-23
摘要： An improved flame retardant molding composition of polypropylene terephthalate or polybutylene terephthalate is provided. The composition includes in intimate admixture an oxide of antimony and a specific brominated aromatic polyphosphate copolymer which has been found to be highly compatible with the other components. In a preferred embodiment the molding composition additionally includes a reinforcing agent (e.g. a glass fiber reinforcing agent). Unlike the flame retardant molding compositions of the prior art, the components of the same tend to be non-exuding during utilization of a resulting three-dimensional shaped article at elevated temperatures (e.g. after 66 hours at 175.degree.C.) and thereby render the same suitable for attractive utilization in an even wider range of applications.
摘要翻译： 提供了改进的聚对苯二甲酸丙二醇酯或聚对苯二甲酸丁二醇酯的阻燃模塑组合物。 该组合物包括紧密混合的锑氧化物和特定溴化芳族聚磷酸酯共聚物，已被发现与其它组分高度相容。 在优选实施方案中，模塑组合物另外包括增强剂（例如玻璃纤维增强剂）。 与现有技术的阻燃剂模塑组合物不同，在升高的温度（例如在175℃下66小时之后）使用所得三维成形制品期间，其组分倾向于不渗出，从而使得 同样适用于更广泛应用的有吸引力的利用。
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公开(公告)号：US4234708A
公开(公告)日：1980-11-18
申请号：US32447
申请日：1979-04-23
CPC分类号： C08G63/20
摘要： A process is disclosed for producing a modified polyethylene iso-terephthalate copolymer which may be processed into plastic containers using conventional extrusion blow molding equipment. The copolymer is modified by the incorporation into a polyethylene iso/terephthalate prepolymer of a chain branching agent and a chain terminating agent. The prepolymer is subsequently solid-state polymerized to form a polyethylene iso/terephthalate copolymer having high zero shear rate melt viscosity and shear sensitivity. This modified copolymer is transparent when extrusion blow molded into a shaped article. The modified copolymer may be extrusion blow molded in intermittent and continuous processes.
摘要翻译： 公开了用于生产改性聚对苯二甲酸乙二醇酯共聚物的方法，其可以使用常规挤出吹塑设备加工成塑料容器。 共聚物通过掺入链支化剂和链终止剂的聚乙烯异/对苯二甲酸酯预聚物中而被改性。 随后将预聚物固态聚合以形成具有高零剪切速率熔融粘度和剪切敏感性的聚乙烯异/对苯二甲酸酯共聚物。 当挤出吹塑成型成型制品时，该改性共聚物是透明的。 改性共聚物可以以间歇和连续的方法挤出吹塑成型。
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公开(公告)号：US4128599A
公开(公告)日：1978-12-05
申请号：US753384
申请日：1976-12-22
IPC分类号： C08L77/00
CPC分类号： C08L77/00
摘要： There is disclosed a process for preparing polycarbodiimide modified tractable polyamides having unique rheological properties which include increased melt strength and relative viscosity. These polycarbodiimide modified tractable polyamides are prepared by reacting the carboxyl end groups and to a lesser degree the amine end groups of tractable polyamides such as nylon 6,6, 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 tractable polyamide has improved melt strength and relative viscosity and a decreased number of carboxylic acid and amine end groups. These improved melt strength polyamides 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化二亚胺改性易溶聚酰胺的方法，其包括增加的熔体强度和相对粘度。 这些聚碳化二亚胺改性的可处理聚酰胺是通过使羧基端基反应而得到的，较小程度上是可处理的聚酰胺如尼龙6,6的胺端基，它们与至少一种聚碳化二亚胺的聚碳二亚胺基例如聚 （a）衍生自至少一种芳族二异氰酸酯的（4,4'-二苯基 - 甲烷碳二亚胺），它们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）含有至少三个碳二亚胺单元 每个聚碳二亚胺分子。
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9.发明授权Molding composition suitable for forming improved flame retardant three-dimensional shaped articles 失效适于形成改进的阻燃三维成形制品的成型组合物
公开(公告)号：US4024102A
公开(公告)日：1977-05-17
申请号：US442038
申请日：1974-02-13
CPC分类号： C08K3/2279 , C08L67/02
摘要： An improved flame retardant molding composition of polypropylene terephthalate or polybutylene terephthalate is provided. The composition includes in intimate admixture with the non-halogenated polypropylene terephthalate or polybutylene terephthalate an oxide of antimony, a reinforcing agent (e.g. a glass fiber reinforcing agent), and a polyalkylene-2,5-dibromoterephthalate. Unlike the flame retardant molding compositions of the prior art, the components of the same tend to be non-exuding during utilization of the resulting three-dimensional shaped article at elevated temperatures (e.g. after 66 hours at 175.degree. C.) and thereby render the same suitable for attractive utilization in an even wider range of applications.
摘要翻译： 提供了改进的聚对苯二甲酸丙二醇酯或聚对苯二甲酸丁二醇酯的阻燃模塑组合物。 该组合物与非卤化聚对苯二甲酸丙二醇酯或聚对苯二甲酸丁二醇酯，锑氧化物，增强剂（例如玻璃纤维增强剂）和聚亚烷基-2,5-二溴对苯二甲酸酯紧密混合。 与现有技术的阻燃剂模塑组合物不同，在升高的温度（例如在175℃下66小时之后）使用所得三维成形制品期间，其组分倾向于不渗出，从而使得 同样适用于更广泛应用的有吸引力的利用。
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10.发明授权Process for forming blend of polyalkylene terephthalate and wholly aromatic polyester which exhibits an anisotropic melt phase 失效形成具有各向异性熔融相的聚对苯二甲酸亚烷基酯和全芳族聚酯的共混物的方法
公开(公告)号：US4451611A
公开(公告)日：1984-05-29
申请号：US330988
申请日：1981-12-15
CPC分类号： C08L67/00 , C08G63/605 , C08L67/04
摘要： An improved process for producing a polymer blend which exhibits an anisotropic melt phase and is capable of forming shaped articles having satisfactory mechanical properties (e.g. tensile strength, flexural strength, and Izod impact strength) is provided. The process comprises the steps of (a) post-polymerizing a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase apart from the blend and (b) subsequently intimately mixing together approximately 85 to 95 percent by weight of the wholly aromatic polyester and approximately 5 to 15 percent by weight of a polyalkylene terephthalate. Accordingly, the wholly aromatic polyester which is capable of forming an anisotropic melt phase serves as the continuous phase in the resulting blend. The post-polymerization step is conducted at a temperature and for a period of time sufficient to increase the inherent viscosity of the wholly aromatic polyester by at least approximately 50 percent, preferably by at least approximately 100 percent. Each of the shaped article mechanical properties identified above is improved over that of the composition in the absence of the polyalkylene terephthalate. The polyalkylene terephthalate is preferably polyethylene terephthalate.
摘要翻译： 提供了一种改进的显示各向异性熔融相并且能够形成具有令人满意的机械性能（例如拉伸强度，弯曲强度和艾佐德冲击强度）的成形制品的聚合物共混物的方法。 该方法包括以下步骤：（a）使可熔融加工的全芳族聚酯进行后聚合，该聚酯能够与共混物分开形成各向异性熔融相，和（b）随后将约85至95重量％的全芳族化合物 聚酯和约5至15重量％的聚对苯二甲酸亚烷基酯。 因此，能够形成各向异性熔融相的全芳族聚酯在所得共混物中用作连续相。 后聚合步骤在足以使全芳族聚酯的比浓对数增加至少约50％，优选至少约100％的温度和时间段进行。 在不存在聚对苯二甲酸亚烷基酯的情况下，上述所确定的每种成型制品的机械性能均优于组合物。 聚对苯二甲酸亚烷基酯优选为聚对苯二甲酸乙二醇酯。
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