Processes for preparing copolymers
    1.
    发明授权
    Processes for preparing copolymers 失效
    制备共聚物的方法

    公开(公告)号:US6124409A

    公开(公告)日:2000-09-26

    申请号:US929457

    申请日:1992-08-12

    摘要: Disclosed is a process for preparing copolymers which comprises, in the order stated: (1) adding monomers containing unsaturated carbon-to-carbon bonds, a first polymerization initiator, a second polymerization initiator, and a solvent to a reaction vessel; (2) purging the resulting solution with an inert gas; (3) sealing the reaction vessel and pressurizing it by addition of an inert gas to a pressure of from about 20 to about 600 kilopascals over ambient atmospheric pressure; (4) maintaining the temperature within the pressurized reaction vessel at a temperature of from about 50 to about 100.degree. C. for a period of from about 60 to about 300 minutes; (5) thereafter maintaining the temperature within the pressurized reaction vessel at a temperature of from about 80 to about 115.degree. C. for a period of from about 30 to about 300 minutes, wherein the temperature in step (5) is higher than the temperature in step (4); and (6) subsequently maintaining the temperature within the pressurized reaction vessel at a temperature of from about 115 to about 160.degree. C. for a period of from about 30 to about 180 minutes, wherein the temperature in step (6) is higher than the temperature in step (5). Polymers prepared according to the process of the present invention can be particularly useful in migration imaging members.

    摘要翻译: 公开了一种制备共聚物的方法,其顺序包括:(1)向反应容器中加入含有不饱和碳 - 碳键的单体,第一聚合引发剂,第二聚合引发剂和溶剂; (2)用惰性气体吹扫所得溶液; (3)密封反应容器并通过在环境大气压下加入约20至约600千帕斯卡的惰性气体对其加压; (4)将加压反应容器内的温度维持在约50至约100℃的温度下约60至约300分钟; (5)之后将加压反应容器内的温度保持在约80至约115℃的温度下约30至约300分钟的时间,其中步骤(5)中的温度高于温度 在步骤(4)中; 和(6)随后将加压反应容器内的温度保持在约115至约160℃的温度下约30至约180分钟的时间,其中步骤(6)中的温度高于 步骤(5)中的温度。 根据本发明的方法制备的聚合物可以在迁移成像构件中特别有用。

    Meltblown fiber battery separator
    2.
    发明授权
    Meltblown fiber battery separator 失效
    熔喷纤维电池隔膜

    公开(公告)号:US6120939A

    公开(公告)日:2000-09-19

    申请号:US6362

    申请日:1998-01-13

    IPC分类号: H01M2/16 H01M2/18

    摘要: Battery separator comprising a consolidated nonwoven mat of ultrafine polymeric fibers in which at least 10% of said fibers have a diameter less than 1 micron and which mat has an average pore size of less than 3 .mu.m. The fiber mat is formed by meltblowing using modified conditions to produce a self-bonded web having the desired content of ultra fine fibers.

    摘要翻译: 电池隔板包括超细聚合物纤维的固结非织造垫,其中至少10%的所述纤维具有小于1微米的直径,并且该垫的平均孔径小于3微米。 通过使用改进的条件通过熔喷法形成纤维垫以产生具有所需含量的超细纤维的自粘合纤维网。

    Retroreflective articles of nanoporous construction and method for the manufacture thereof
    3.
    发明授权
    Retroreflective articles of nanoporous construction and method for the manufacture thereof 失效
    纳米多孔结构的逆反射制品及其制造方法

    公开(公告)号:US06861134B1

    公开(公告)日:2005-03-01

    申请号:US09824612

    申请日:2001-04-02

    申请人: Eric M. Peters

    发明人: Eric M. Peters

    IPC分类号: B32B3/00 B32B3/26

    摘要: A retroreflective article comprises a) a microporous substrate (52) containing a plurality of pores (56) which are less than 0.5 μm in diameter; and b) a layer of reflective material (54) located on the surface (58) of the substrate such that the reflective material layer at least partially obscures a plurality of the pores of the substrate. A method for the production of a reflective article comprises the steps of a) providing a substrate which contains pores which have a diameter of less than 0.5 μm; and b) applying a layer of reflective material to the substrate in such a way that the reflective material layer at least partially obscures a plurality of the pores of the substrate.

    摘要翻译: 一种逆反射制品包括:a)包含直径小于0.5μm的多个孔(56)的微孔基材(52) 以及b)位于所述基板的所述表面(58)上的反射材料层(54),使得所述反射材料层至少部分地遮蔽所述基板的多个孔。 制造反射制品的方法包括以下步骤:a)提供含有直径小于0.5μm的孔的基底; 以及b)将所述反射材料层施加到所述基底上,使得所述反射材料层至少部分地遮蔽所述基底的多个孔。