FUNCTIONALIZED COPOLYMERS OF ISOOLEFINS AND DIOLEFINS AND THEIR USE AS COMPATIBILIZERS
    4.
    发明申请
    FUNCTIONALIZED COPOLYMERS OF ISOOLEFINS AND DIOLEFINS AND THEIR USE AS COMPATIBILIZERS 审中-公开
    丙烯酸和二烯的功能性共聚物及其作为配体的用途

    公开(公告)号:US20140004252A1

    公开(公告)日:2014-01-02

    申请号:US13816299

    申请日:2011-08-11

    IPC分类号: A61L31/10

    摘要: Functionalized copolymers of isoolefins and conjugated diolefins, methods of preparing said copolymers, and their use as compatibilizers are disclosed. The diolefin monomer units of the co-polymer are modified at the C—C double bond along the backbone of the copolymer to include an oxygen containing functional group such as epoxide, ester or alcohol. The functionalized copolymers improve the wettabilty of a non-hydrophilic surface towards hydrophilic polymer and allows for the formation of homogenous layers of the hydrophilic polymers. In particular, the spreading of a hydrophilic polymer on a non-hydrophilic substrate is facilitated by applying the co-polymers as an interfacial layer between the two incompatible materials. The resulting coated substrates exhibit resistance to protein adsorption and cell growth after grafting. The co-polymers are especially suited in the coating of biomedical devices where a high degree of uniformity of the coated surface is required.

    摘要翻译: 公开了异烯烃和共轭二烯烃的官能化共聚物,制备所述共聚物的方法及其作为增容剂的用途。 共聚物的二烯烃单体单元沿着共聚物的主链在C-C双键上被修饰,以包括含氧官能团如环氧化物,酯或醇。 官能化共聚物使亲水性聚合物的非亲水性表面的润湿性提高,并允许形成亲水性聚合物的均匀层。 特别地,通过将​​共聚物作为两种不相容材料之间的界面层来促进亲水性聚合物在非亲水性基材上的铺展。 所得涂覆的基质在移植后显示出抗蛋白质吸附和细胞生长。 共聚物特别适用于需要涂层表面高度均匀性的生物医学装置的涂层。

    Apparatus and method for determining a drying time of a piece of wood

    公开(公告)号:US06577143B2

    公开(公告)日:2003-06-10

    申请号:US09982186

    申请日:2001-10-18

    IPC分类号: G01R2704

    CPC分类号: G01N33/46 G01N27/048

    摘要: The drying time of a piece of wood can be determined by the present apparatus and method, based on a current signal passing through the piece of wood. A set of first and second electrodes of a probe are inserted into the piece of wood which may be travelling on a conveyor. The second electrode has an input for receiving electric power. The first electrode has an output for transmission of the current signal having passed through the piece of wood. The probe is driven toward and away from the piece of wood by a driving mechanism controlled by a control circuit. A measuring circuit is coupled to the outputs of the electrodes. The current signals are measured by the measuring circuit, which determines the drying time of the piece of wood.