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    • 4. 发明授权
    • Process for preparing polyamideimide resins by direct polymerization
    • 通过直接聚合制备聚酰胺酰亚胺树脂的方法
    • US5955568A
    • 1999-09-21
    • US956923
    • 1997-10-23
    • Kil-Yeong ChoiDong-Hack SuhMi-Hie YiYoung-Taik HongMoon-Young Jin
    • Kil-Yeong ChoiDong-Hack SuhMi-Hie YiYoung-Taik HongMoon-Young Jin
    • C08G73/14C08G69/28
    • C08G73/14
    • The disclosure describes a process for preparing a polyamideimide resin having high molecular weight in a simple manner wherein major problems of the prior processes such as low heat resistance and low melt flowability are improved. The process comprises condensation of an aromatic tricarboxylic acid anhydride and an aromatic diamine in a polar solvent, subjecting the resulting diimidedicarboxylic acid to acyl halogenating agent treatment to give an intermediate having good reactivity at low temperature, and then subjecting the latter to direct polymerization by using diamine as a nucleophilic agent to give a polyamideimide resin having high molecular weight. The polyamideimide resin prepared by the present invention can be used as major heat resistant structural material in advanced industries and as paint, sheet, adhesives, sliding material, fiber and film having heat resistance.
    • 本公开内容描述了以简单的方式制备具有高分子量的聚酰胺酰亚胺树脂的方法,其中诸如低耐热性和低熔融流动性的现有方法的主要问题得到改善。 该方法包括在极性溶剂中将芳族三羧酸酐和芳族二胺缩合,将所得二酰亚胺二羧酸进行酰卤处理,得到在低温下具有良好反应性的中间体,然后使用后者通过使用 二胺作为亲核剂,得到具有高分子量的聚酰胺酰亚胺树脂。 本发明制备的聚酰胺酰亚胺树脂可用作先进工业中的主要耐热结构材料,可用作具有耐热性的油漆,片材,粘合剂,滑动材料,纤维和薄膜。
    • 5. 发明授权
    • Process for preparing polyamideimide resins having high molecular weight
    • 制备高分子量聚酰胺酰亚胺树脂的方法
    • US5532334A
    • 1996-07-02
    • US339391
    • 1994-11-14
    • Kil-Yeong ChoiDong-Hack SuhMi-Hie YiYoung-Taik HongJong-Chan Won
    • Kil-Yeong ChoiDong-Hack SuhMi-Hie YiYoung-Taik HongJong-Chan Won
    • C08G73/14H01B3/30C08G69/26
    • C08G73/14H01B3/303
    • A process for preparing polyamideimide resins having high molecular weights as described wherein major problems of prior art processes such as low heat resistance and low melt flowability are improved. Polyamideimide resins having an intrinsic viscosity of 0.4 to 1.50 dl/g as measured on a solution of dimethylacetamide as a solvent at a concentration of 0.5 g/dl at 30.degree. C., are prepared by reacting an aromatic tricarboxylic acid anhydride with an aromatic diamine in N-methyl pyrrolidone solvent in the presence of a first catalyst selected from a group consisting of thionyl chloride, p-toluenesulphonly chloride, sulfuryl chloride, cyanuric chloride and phosphorus trichloride at a temperature of 50.degree. C. to 130.degree. C. over a period of 1 to 5 hours and further reacting the resultant reaction mixture in the presence of a second catalyst which is a compound of the formula (RO).sub.3 P wherein R is an aliphatic or aromatic substituent, or a compound which is phosphoric acid, pyrophosphoric acid, phosphorous pentaoxide or phosphorous pentachloride as a second catalyst at a temperature of 50.degree. C. to 130.degree. C. over a period of 1 to 5 hours.
    • 制备如上所述的具有高分子量的聚酰胺酰亚胺树脂的方法,其中提高了诸如低耐热性和低熔融流动性的现有技术方法的主要问题。 通过在30℃下以0.5g / dl的浓度作为溶剂的二甲基乙酰胺溶液测定的特性粘度为0.4至1.50dl / g的聚酰胺酰亚胺树脂通过芳族三羧酸酐与芳族二胺 在N-甲基吡咯烷酮溶剂中,在50℃至130℃的温度下,在选自亚硫酰氯,对甲苯磺酰氯,磺酰氯,氰尿酰氯和三氯化磷的第一催化剂存在下,在 时间为1至5小时,并且在第二催化剂存在下进一步反应,所述第二催化剂是式(RO)3P的化合物,其中R是脂族或芳族取代基,或者是磷酸化合物,焦磷酸 ,五氧化二磷或五氯化磷作为第二催化剂,温度为50〜130℃,时间为1〜5小时。