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    • 4. 发明授权
    • Polyamide and film made from at least one monomolecular layer of a
polyamide
    • 聚酰胺和薄膜从一个单一分子层聚酰胺制成
    • US5166307A
    • 1992-11-24
    • US402863
    • 1989-09-05
    • Harald CherdronWerner PrassUde ScheunemannDonald Lupo
    • Harald CherdronWerner PrassUde ScheunemannDonald Lupo
    • B05D1/20B32B27/34C08G69/26C08J5/18
    • B05D1/202B82Y30/00B82Y40/00C08G69/26Y10T428/265Y10T428/31725Y10T428/31728
    • Polyamides of the general formula [N(A)-X-N(B)-CO-Y-CO-].sub.n are described, in which Y denotes a divalent group, X a divalent radical whose chain contains at least two carbon atoms, A and B independently of one another denote H or a C.sub.1 to C.sub.26 alkyl group and n denotes an integer greater than 4. The said polyamides contain at least one alkyl group of C.sub.6 to C.sub.26 per repeating unit. The groups X and/or Y contain at leat one CH.sub.2 group in the chain. The polyamides are prepared by reaction of a diamine of the formula NHA-X-NHB with an about equimolar amount of a reactive derivative of a dicarboxylic acid of the formula COOH-Y-COOH. The polyamides obtained can be used in order to prepare highly ordered monomolecular LB films on a support. For this purpose, the polyamide is dissolved in a volatile organic solvent which is immiscible with water and the solution is spread on the water/air interface. After evaporation of the solvent the layer is compressed and transferred to a solid support by the LB technique. The film is very stable and can be used to prepare optical waveguide systems, filters for optical purposes or protective layers.
    • 描述了通式[N(A)-XN(B)-CO-Y-CO-] n的聚酰胺,其中Y表示二价基团,X是其链含有至少两个碳原子的二价基团,A和 B彼此独立地表示H或C1至C26烷基,n表示大于4的整数。所述聚酰胺每个重复单元含有至少一个C6至C26的烷基。 基团X和/或Y在链中含有一个CH 2基团。 聚酰胺通过式NHA-X-NHB的二胺与约等摩尔量的式COOH -Y-COOH的二羧酸的活性衍生物的反应来制备。 获得的聚酰胺可用于在载体上制备高度有序的单分子LB膜。 为此,将聚酰胺溶解在与水不混溶的挥发性有机溶剂中,并将溶液铺展在水/空气界面上。 溶剂蒸发后,将层压缩并通过LB技术转移至固体支持物。 该膜非常稳定,可用于制备光波导系统,用于光学目的的滤光片或保护层。