Process for improving the photochemical stability of dyeings on
polyester fibre materials
    9.
    发明授权
    Process for improving the photochemical stability of dyeings on polyester fibre materials 失效
    改善聚酯纤维材料染色光化学稳定性的方法

    公开(公告)号:US4895981A

    公开(公告)日:1990-01-23

    申请号:US331071

    申请日:1989-03-24

    CPC classification number: C07D239/42 D06P1/6426 D06P3/54

    Abstract: A process is described for improving the photochemical stability of dyeings on polyester fibre materials by means of UV absorbers of the formula ##STR1## in which R is alkyl, alkoxy, halogen or hydroxyl, R.sub.1 is alkyl, R.sub.2 is hydrogen, halogen, alkyl, alkylamino, hydroxyalkylamino, aralkylamino, alkoxyalkylamino, alkenyl, alkoxy, alkoxy which is substituted by hydroxyl, carboxyl or C.sub.2 -C.sub.5 alkoxycarbonyl, alkenyloxy, phenyl or phenyl which is substituted by halogen, alkyl, hydroxy-C.sub.1 -C.sub.4 alkyl, alkenyloxy, alkoxy, hydroxyl or carboxy-C.sub.1 -C.sub.4 alkoxy, m is 0 or 1 and n is 0, 1 or 2, and also novel compounds of the formula (1) in which m and n are both 0 and R.sub.2 is alkylamino, hydroxyalkylamino, aralkylamino or alkoxyalkylamino.

    Abstract translation: 描述了通过式(1)的UV吸收剂改进聚酯纤维材料上的染色的光化学稳定性的方法,其中R是烷基,烷氧基,卤素或羟基,R 1是烷基,R 2是氢,卤素 烷基,烷基氨基,羟基烷基氨基,芳烷基氨基,烷氧基烷基氨基,烯基,烷氧基,被羟基,羧基或C 2 -C 5烷氧基羰基,烯氧基,苯基或被卤素取代的苯基,烷基,羟基-C 1 -C 4烷基, ,羟基或羧基-C 1 -C 4烷氧基,m为0或1,n为0,1或2,以及其中m和n均为0且R2为烷基氨基,羟烷基氨基,芳烷基氨基或羟烷基氨基的新型式(1)化合物 烷氧基烷基氨基。

    Variably controllable bobbin thread pull-off mechanism
    10.
    发明授权
    Variably controllable bobbin thread pull-off mechanism 失效
    可变的底线线拔出机构

    公开(公告)号:US4380961A

    公开(公告)日:1983-04-26

    申请号:US246564

    申请日:1981-03-23

    CPC classification number: D05B63/00

    Abstract: A variable pull-off mechanism for a sewing machine is provided with a thread pull-off disc on a rotatably mounted shaft which is concentric with the drive shaft of a vertical axis looptaker. The disc is formed with thread catching edges which engage and pull-off thread from a bobbin as the disc is oscillated between a fixed and a controllable position in accordance with the operation of a servomotor responsive to various control signals.

    Abstract translation: 一种用于缝纫机的可变牵引机构在可旋转地安装的轴上设置有螺纹拉出盘,其与垂直轴线取样器的驱动轴同心。 盘根据各种控制信号的伺服电动机的操作,在盘在固定位置和可控位置之间摆动时,将线圈形成有螺纹啮合边缘,从而从线轴上接合和脱开螺纹。

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