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1.发明授权Copolyamide based on tetramethylene terephthalamide and hexamethylene terephthalamide 有权基于对苯二甲酰对苯二胺和对苯二甲酰己二胺的共聚酰胺公开(公告)号：US06747120B2
公开(公告)日：2004-06-08
申请号：US10109055
申请日：2002-03-29
IPC分类号： C08G6902
CPC分类号： C08L77/00 , C08G69/26 , C08G69/265 , C08G69/28
摘要： The invention relates to a semi-aromatic polyamide containing at least tetramethylene terephthalamide units and also hexamethylene terephthalamide units. The copolyamide has a melting point higher than approximately 290° C., a high crystallinity and a good stability. Preferably the copolyamide according to the invention contains approximately 30-75 mol % hexamethylene terephthalamide units and also approximately 0.01-20 mol % other units. The invention also relates to a process for the preparation of a semi-aromatic copolyamide containing at least tetramethylene terephthalamide units and hexamethylene terephthalamide units, characterized in that, successively, a first polymerization is effected in the melt phase, followed by an post-polymerization of the low molar mass polymer thus obtained in the solid phase; and to compositions and products that contain said copolyamide.
摘要翻译： 本发明涉及至少含有对苯二甲酰胺单元和对苯二甲酰己二胺单元的半芳族聚酰胺。共聚酰胺的熔点高于约290℃，结晶度高，稳定性好。优选本发明的共聚酰胺 含有约30-75摩尔％的对苯二甲酰己二胺单元和约0.01-20摩尔％的其它单元。本发明还涉及制备至少含有对苯二甲酰胺单元和对苯二甲酰己二胺单元的半芳族共聚酰胺的方法，其特征在于 接着在熔融相中进行第一次聚合，然后在固相中由此获得的低摩尔质量聚合物进行后聚合; 以及含有所述共聚酰胺的组合物和产品。
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公开(公告)号：US09428612B2
公开(公告)日：2016-08-30
申请号：US12161602
申请日：2007-01-23
CPC分类号： C08G69/265 , C08G69/02 , C08G69/26 , C08G81/028 , C08L77/06
摘要： The invention relates to a semi-crystalline semi-aromatic polyamide comprising A-A-B-B units derived from (a) dicarboxylic acids consisting of a mixture of aromatic dicarboxylic acid and aliphatic dicarboxylic acid and (b) diamines consisting of a mixture of long chain aliphatic diamine and short chain aliphatic diamine, wherein (a-i) the aromatic dicarboxylic acid consists for at least 80 mole % of terephthalic acid, and (a-ii) the aliphatic dicarboxylic acid constitutes at least 5 mole % of the dicarboxylic acids, (b-i) the short chain aliphatic diamine constitutes at least 10 mole % of the diamines, and (c) the aromatic dicarboxylic acid and the long chain aliphatic diamine constitute 60-90 mole % of the total molar amount of dicarboxylic acids and diamines.
摘要翻译： 本发明涉及一种半结晶半芳族聚酰胺，其包含衍生自（a）由芳族二羧酸和脂族二羧酸的混合物组成的二羧酸的AABB单元和（b）由长链脂族二胺和短链脂肪族二胺的混合物组成的二胺 链烯基二胺，其中（ai）芳族二羧酸由至少80摩尔％的对苯二甲酸组成，和（a-ii）脂族二羧酸构成至少5摩尔％的二羧酸，（bi）短链 脂肪族二胺占二胺的至少10摩尔％，（c）芳族二羧酸和长链脂肪族二胺构成二羧酸和二胺的总摩尔量的60〜90摩尔％。
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3.发明授权Solid-state post-condensation process for increasing the molecular weight of a polyamide 有权用于提高聚酰胺分子量的固态后缩合方法公开(公告)号：US07767782B2
公开(公告)日：2010-08-03
申请号：US10501733
申请日：2003-01-07
IPC分类号： C08G69/28
摘要： The invention relates to a process for increasing the molecular weight of a polyamide via solid-state post-condensation by exposing the polyamide in the solid-state at elevated temperature to an inert gas atmosphere, that comprises a step (a) wherein the gas atmosphere to which the polyamide is exposed has a dew temperature Tdew-1, followed by a step (b) wherein the gas atmosphere to which the polyamide is exposed has a dew temperature Tdew-2, whereby Tdew-1 is higher than Tdew-2. The effect is that a high molecular weight polyamide can be obtained in a shorter production time.
摘要翻译： 本发明涉及一种通过将固体状态的聚酰胺在升高的温度下暴露于惰性气体气氛中，通过固态后冷凝来提高聚酰胺的分子量的方法，其包括步骤（a），其中气体气氛 聚酰胺露出的露点温度为Tdew-1，接着是暴露于聚酰胺的气体气氛具有露点温度Tdew-2的步骤（b），由此Tdew-1高于Tdew-2。 其效果是可以在更短的生产时间内获得高分子量聚酰胺。
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