首页> 外国专利> Thermostable polyurethane-amide used for medical equipment esp. catheter - and prepn. by polycondensing low-mol., amine-terminated partly crystalline polyamide from bis:sec. di:amine with bis:chloro-carbonate ester

Thermostable polyurethane-amide used for medical equipment esp. catheter - and prepn. by polycondensing low-mol., amine-terminated partly crystalline polyamide from bis:sec. di:amine with bis:chloro-carbonate ester

机译：特别是用于医疗设备的耐高温聚氨酯酰胺。导管-和准备。通过缩聚由bis：sec得到的低分子量，胺端基的部分结晶的聚酰胺。二胺与二碳酸氯酯

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New polyurethane-amides (I) are obtd. by condensing (co)polyamides (II) with bischlorocarbonate esters of the formula Cl-CO-O-R-O-CO-Cl (III); R = 4-22C alkylene, in which up to 2 CH2 gps. may be replaced by O atoms. (II) are low mol., mainly amine-terminated and at least 20 (wt.)% partly crystalline. They have Mn = 500-15000 and are prepd. from 6-44C alkane-dicarboxylic acids (IV) and bis-sec. diamines of the formula R1HN-Alk-NHR2 (VA) or Pip-Alk-Pip (VB); R1-2 = 1-22C alkyl; or R1+R2 = 2-12C alkylene, completing a heterocycle; Alk = 2-12C alkylene; Pip = piperidyl with free NH gps. (V) is unsubstd. piperidine (VC). USE/ADVANTAGE - (I) are used for making medical equipment and catheters. They are esp. suitable for films or tubes for medical purposes, e.g. implants. (I) are also useful for making other mouldings, including films and fibres. (I) are resistant to hydrolysis, have the required mechanical properties and are very thermostable, with max. wt. loss at over 450 deg.C. Their properties can be varied widely by selecting suitable (II) to give resinous thermoplastics and thermoplastic elastomers.

机译：新的聚氨酯酰胺（I）被淘汰。通过将（共）聚酰胺（II）与式Cl-CO-O-R-O-CO-Cl（III）的二氯碳酸酯缩合; R = 4-22C亚烷基，其中高达2 CH2 gps。可以被O原子取代。（II）是低摩尔的，主要是胺封端的，并且至少20（wt。）％的部分结晶。它们的Mn = 500-15000且已制备。由6-44C烷烃-二羧酸（IV）和双-仲。式R 1 HN-Alk-NHR 2（VA）或Pip-Alk-Pip（VB）的二胺; R1-2 ＝ 1-22C烷基;或R 1 + R 2 ＝ 2-12C亚烷基，完成一个杂环;或烷基＝ 2-12C亚烷基; Pip =带有游离NH gps的哌啶基。（V）是未取代的。哌啶（VC）。使用/优点-（I）用于制造医疗设备和导管。他们特别是。适用于医疗用途的胶卷或胶片，例如植入物。（I）还可用于制造其他模制品，包括薄膜和纤维。（I）耐水解，具有所需的机械性能，并且非常热稳定，最大重量450℃以上的损失。通过选择合适的（II）以得到树脂热塑性塑料和热塑性弹性体，它们的性能可以广泛地变化。

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公开/公告号DE4233025A1

专利类型
公开/公告日1994-04-07

原文格式PDF
申请/专利权人 BAYER AG 51373 LEVERKUSEN DE;
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申请/专利号DE19924233025
发明设计人 HUGL HERBERT DIPL.-CHEM. DR. 5060 BERGISCH GLADBACH DE;KOEHLER BURKHARD DIPL.-CHEM. DR. 4150 KREFELD DE;DHEIN ROLF DIPL.-CHEM. DR. 4150 KREFELD DE;
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申请日1992-10-01
分类号C08G71/04;
国家 DE
入库时间 2022-08-22 04:36:03

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