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公开(公告)号：US5089600A
公开(公告)日：1992-02-18
申请号：US394581
申请日：1989-08-16
摘要： Copolymers comprising amide units and urea units are prepared by melt phase interchange of diaryl esters of dicarboxylic acids with diamines and diesters of carbonic acid with diamines. The products are tough resins, useful per se as molding compounds, or in blends with other thermoplastic polymers.
摘要翻译： 包含酰胺单元和尿素单元的共聚物通过将二羧酸的二芳基酯与碳酸与二胺的二胺和二酯进行熔融相互交换来制备。 该产品是韧性树脂，本身可用作模塑料，或与其它热塑性聚合物的共混物。
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公开(公告)号：US4973746A
公开(公告)日：1990-11-27
申请号：US261800
申请日：1988-10-24
IPC分类号： C07C27/00 , C07C29/09 , C07C31/20 , C07C209/48 , C07C209/50 , C07C211/18 , C07C211/27 , C07C227/04 , C07C229/38 , C07C231/02 , C07C233/65 , C07C253/20 , C07C255/51
CPC分类号： C07C209/48 , C07C227/04 , C07C231/02 , C07C253/20 , C07C253/30 , C07C2101/14
摘要： Scrap poly(ethyleneterephthalate) is converted to useful amine and diamine monomers such as para-xylylenediamine, 1,4-bis(aminomethyl)cyclohexane and 4-aminomethyl benzoic acid for the production of various polyamides. The conversion of poly(ethyleneterephthalate) to diamine monomers is achieved by a three step process involving (a) ammonolysis of the poly(ethyleneterephthalate) to produce terephthalamide and ethylene glycol; (b) pyrolytic dehydration of the terephthalamide to produce terephthalonitrile; and (c) hydrogenation of the terephthalonitrile to produce the para-xylylene diamine and/or 1,4-bis(aminomethyl)cyclohexane. The conversion of poly(ethyleneterephthalate) to 4-aminomethyl benzoic acid involves the steps of (a) ammonolysis of the poly(ethyleneterephthalate) to produce terephthalamide; (b) partial pyrolytic dehydration of said terephthalamide to produce 4-cyanobenzoic acid; and (c) hydrogenation of said 4-cyanobenzoic acid to produce 4-aminomethylbenzoic acid. The process of the present invention permits the conversion of low value PET scrap such as beverage bottles, fibers and film to relatively high value and relatively pure diamine monomers and ethylene glycol.
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公开(公告)号：US4876317A
公开(公告)日：1989-10-24
申请号：US139482
申请日：1987-12-30
摘要： Copolymers comprising amide units and urea units are prepared by melt phase interchange of diaryl esters of dicarboxylic acids with diamines and diesters of carbonic acid with diamines. The products are tough resins, useful per se as molding compounds, or in blends with other thermoplastic polymers.
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4.发明授权Color minimization during melt preparation of polyamides with hypophosphorus acid 失效用低磷酸熔融制备聚酰胺时的颜色最小化
公开(公告)号：US4983718A
公开(公告)日：1991-01-08
申请号：US364360
申请日：1989-06-09
CPC分类号： C08G69/28
摘要： A process for minimizing the formation of color during preparation of polyamides by interchange of diesters of dicarboxylic acids with diamines in the presence of hypophosphorous acid.
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公开(公告)号：US4918149A
公开(公告)日：1990-04-17
申请号：US266978
申请日：1988-11-04
IPC分类号： C08L69/00
CPC分类号： C08L69/00
摘要： A polyphthalatecarbonate/polycarbonate blend exhibits improved resistance to hazing and yellowing from prolonged exposure to ultraviolet radiation. The blend is useful in the production of transparent, ultraviolet radiation stable sheets and films.
摘要翻译： 聚对苯二甲酸碳酸酯/聚碳酸酯共混物表现出改善的抗长时间暴露于紫外线辐射下的起雾和变黄。 该混合物可用于生产透明，紫外线辐射稳定的片材和薄膜。
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公开(公告)号：US5516855A
公开(公告)日：1996-05-14
申请号：US508324
申请日：1995-07-27
CPC分类号： C08G69/44
摘要： Copolymers comprising amide units and ester units are prepared by melt phase interchange of diaryl esters of dicarboxylic acids and diamines with dihydric alcohols and diesters of aromatic dicarboxylic acids. The products are tough resins, useful per se as molding compounds, and to compatibilize and toughen other thermoplastic polymers.
摘要翻译： 包含酰胺单元和酯单元的共聚物通过二元羧酸和二胺的二芳基酯与二元醇和芳族二羧酸的二酯的熔融相互交换来制备。 该产品是韧性树脂，本身作为模塑料是有用的，并且使其它热塑性聚合物相容化和增韧。
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公开(公告)号：US5340885A
公开(公告)日：1994-08-23
申请号：US8272
申请日：1993-01-25
CPC分类号： C08G69/44
摘要： Copolymers comprising amide units and ester units are prepared by melt phase interchange of diaryl esters of dicarboxylic acids and diamines with dihydric alcohols and diesters of aromatic dicarboxylic acids. The products are tough resins, useful per se as molding compounds, and to compatibilize and toughen other thermoplastic polymers.
摘要翻译： 包含酰胺单元和酯单元的共聚物通过二元羧酸和二胺的二芳基酯与二元醇和芳族二羧酸的二酯的熔融相互交换来制备。 该产品是韧性树脂，本身作为模塑料是有用的，并且使其它热塑性聚合物相容化和增韧。
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公开(公告)号：US5070177A
公开(公告)日：1991-12-03
申请号：US372240
申请日：1989-06-26
IPC分类号： C08G63/64
CPC分类号： C08G63/64
摘要： An aromatic polyphthalatecarbonate resin having a small percentage of phthalate units therein exhibits improved resistance to hazing and yellowing upon exposure to ultraviolet radiation. The polyphthalate carbonate resin is derived from the reaction products of a phthalate compound, a dihydric phenol and a carbonate precursor.
摘要翻译： 具有小百分比的邻苯二甲酸酯单元的芳族聚对苯二甲酸酯碳酸酯树脂在暴露于紫外线辐射时显示出改善的耐候性和变黄性。 聚邻苯二甲酸酯碳酸酯树脂衍生自邻苯二甲酸酯化合物，二元酚和碳酸酯前体的反应产物。
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公开(公告)号：US4567249A
公开(公告)日：1986-01-28
申请号：US553152
申请日：1983-11-18
申请人： Daniel W. Fox , Sheldon J. Shafer
发明人： Daniel W. Fox , Sheldon J. Shafer
CPC分类号： C08G69/28
摘要： Melt-processable polyamides are prepared smoothly and rapidly by interchange of diesters of dicarboxylic acids with diamines in a solventless melt phase process.
摘要翻译： 可熔融加工的聚酰胺通过在无溶剂熔融相方法中将二羧酸二酯与二胺交换而顺利而快速地制备。
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10.发明授权Method for regenerating a sulfonated aromatic organic polymeric ion-exchange resin bed having deactivated aminoorganomercaptan groups with phenol 失效用苯酚再生具有失活的氨基有机硫醇基团的磺化芳族有机聚合物离子交换树脂床的方法
公开(公告)号：US5428075A
公开(公告)日：1995-06-27
申请号：US236815
申请日：1994-05-02
IPC分类号： B01J49/00 , B01J31/10 , B01J31/40 , B01J38/52 , B01J39/20 , C07C37/20 , C07C39/12 , C07C39/16
CPC分类号： B01J31/10 , B01J31/0217 , B01J31/0225 , B01J31/0237 , B01J31/0271 , B01J31/4007 , C07C37/20 , B01J2231/342 , Y02P20/52 , Y02P20/584
摘要： A method is provided for regenerating deactivated sulfonated aromatic organic ion-exchange resin beds, such as a polystyrene ion-exchange resin bed, having chemically combined amino organo mercaptan groups with anhydrous phenol at an elevated temperature.
摘要翻译： 提供了一种在高温下再生具有化学结合的氨基有机硫醇基团与无水苯酚的失活的磺化芳族有机离子交换树脂床如聚苯乙烯离子交换树脂床的方法。
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