中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

44 records (took 0.029 seconds)

    COMPOSITE POLYIMIDE SEPARATOR AND PREPARATION METHOD THEREOF, AND SECONDARY BATTERY
    1.
    发明公开
    COMPOSITE POLYIMIDE SEPARATOR AND PREPARATION METHOD THEREOF, AND SECONDARY BATTERY 审中-公开

    公开(公告)号：US20240076419A1

    公开(公告)日：2024-03-07

    申请号：US18489461

    申请日：2023-10-18

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Shida LI ,  Qineng ZHONG ,  Limei YANG ,  Yichen WU ,  Yifan XUE

    IPC: C08F2/12 ,  C08F8/30 ,  H01M10/04

    CPC classification number: C08F2/12 ,  C08F8/30 ,  H01M10/04

    Abstract: A composite polyimide separator and a preparation method thereof, and a secondary battery are described. The preparation method of the composite polyimide separator comprises: providing a porous polyamic acid film; subjecting a diamine aqueous solution and an acyl chloride organic solution to an interfacial polymerization reaction on a surface of the porous polyamic acid film to obtain a composite polyamic acid separator; and placing the composite polyamic acid separator in vapor of an imidization reagent for imidization treatment to obtain the composite polyimide separator. In the present application, by controlling the parameters of the interfacial polymerization reaction, a composite polyamic acid separator with a dense surface, a loose bottom, and an adjustable surface pore size can be obtained.

    POLYMERIZATION PROCESS
    3.
    发明申请
    POLYMERIZATION PROCESS 审中-公开

    公开(公告)号：US20170233503A1

    公开(公告)日：2017-08-17

    申请号：US15503514

    申请日：2015-08-12

    Applicant: Rohm and Haas Company

    Inventor： John David Finch ,  Andrew M. Savo

    IPC: C08F2/40 ,  C08F2/16 ,  C08F2/18

    CPC classification number: C08F2/40 ,  C08F2/12 ,  C08F2/16 ,  C08F2/18 ,  C08F212/08 ,  C08F212/36

    Abstract: Provided is a method of forming a polymer, comprising (a) providing a reaction mixture comprising (i) one or more vinyl monomers, (ii) one or more pH-sensitive inhibition systems, (iii) one or more initiators, and (iv) water; (b) establishing conditions in said reaction mixture such that a free radical polymerization of said vinyl monomer occurs at a location, and (c) after steps (a) and (b) and prior to completion of said free radical polymerization, changing the pH of said reaction mixture to increase the rate of generation of said free radical polymerization at the location of said free radical polymerization.

    Polydispersity-controlled isoolefin polymerization with polymorphogenates
    6.
    发明授权
    Polydispersity-controlled isoolefin polymerization with polymorphogenates 有权
    多分散控制的异烯烃聚合与多形态

    公开(公告)号：US08178465B2

    公开(公告)日：2012-05-15

    申请号：US13005325

    申请日：2011-01-12

    Applicant: Timothy D. Shaffer ,  Michael F. McDonald ,  David Y. Chung ,  Robert N. Webb ,  Deborah J. Davis ,  Pamela J. Wright

    Inventor： Timothy D. Shaffer ,  Michael F. McDonald ,  David Y. Chung ,  Robert N. Webb ,  Deborah J. Davis ,  Pamela J. Wright

    IPC: C08F4/52 ,  C08F4/14 ,  C08F4/76 ,  C08F10/10

    CPC classification number: C08F210/12 ,  C08F2/04 ,  C08F2/12 ,  C08F236/08 ,  C08F2500/04 ,  C08F4/00

    Abstract: The disclosure provides for a process and polymerization system to produce isoolefin polymers (72) utilizing polymorphogenates (16, 26) in the catalyst system to control polydispersity (MWD). The disclosure also provides a catalyst system (20) comprising a plurality of active catalyst complex species (34) formed by combination of a Lewis acid (24), an initiator (22) and a polymorphogenate (26), as well as polymers made using the catalyst system or process. The polymorphogenate (16, 26) can promote or mimic the formation of different active catalyst complex species (34) having different polymerization rates, i.e. different rates of propagation, chain transfer, or termination, as observed by different polydispersities resulting from the presence of relatively different proportions of the polymorphogenate.

    Abstract translation: 本公开提供了一种方法和聚合体系，以在催化剂体系中利用多形态（16,26）来产生异构烯烃聚合物（72）以控制多分散性（MWD）。 本公开还提供了催化剂体系（20），其包含通过路易斯酸（24），引发剂（22）和多形态（26）的组合形成的多种活性催化剂络合物（34），以及使用 催化剂体系或工艺。 聚异构体（16,26）可以促进或模拟具有不同聚合速率的不同活性催化剂复合物（34）的形成，即不同的传播速率，链转移或终止，如通过相对存在导致的不同多分散性所观察到的 不同比例的多形态。

    Methods and Systems for Controlling Polymer Particle Size
    7.
    发明申请
    Methods and Systems for Controlling Polymer Particle Size 有权
    控制聚合物粒径的方法和系统

    公开(公告)号：US20100130704A1

    公开(公告)日：2010-05-27

    申请号：US12632490

    申请日：2009-12-07

    Applicant: John D. Hottovy ,  Gregory G. Hendrickson

    Inventor： John D. Hottovy ,  Gregory G. Hendrickson

    IPC: C08F2/01 ,  B01J19/00 ,  C08F110/02

    CPC classification number: C08F2/002 ,  B01J19/0006 ,  B01J19/002 ,  B01J19/1837 ,  B01J2208/00734 ,  B01J2219/00191 ,  B01J2219/00247 ,  B01J2219/00254 ,  C08F2/12 ,  C08F10/00 ,  C08F10/02 ,  C08F110/02 ,  C08F2400/02 ,  C08F2/14 ,  C08F2/00 ,  C08F2500/24

    Abstract: Techniques are provided for producing polymer particles of a size just slightly larger than the size of polymer fines. The technique may prevent or limit the occurrence of reactor fouls associated with large polymer particles. The technique also may provide a greater weight percentage of solids in the reactor. The desired polymer particle size may be achieved by employing a catalyst having particles of a size determined based on the expected catalyst productivity. In certain embodiments, the catalyst particle size may be determined based on the expected catalyst productivity, the polymer particle density, the catalyst particle density, and/or the polymer particle size.

    Abstract translation: 提供了用于生产尺寸略大于聚合物细粒尺寸的聚合物颗粒的技术。 该技术可以防止或限制与大聚合物颗粒相关联的反应堆污染物的发生。 该技术还可以在反应器中提供更大的固体重量百分比。 所需的聚合物粒度可以通过使用具有基于预期的催化剂生产率确定的尺寸的颗粒的催化剂来实现。 在某些实施方案中，可以基于预期的催化剂生产率，聚合物颗粒密度，催化剂颗粒密度和/或聚合物粒度来确定催化剂粒度。

    PROCESS FOR POLYMERISING ALPHA-OLEFIN MONOMERS
    9.
    发明申请
    PROCESS FOR POLYMERISING ALPHA-OLEFIN MONOMERS 审中-公开

    公开(公告)号：US20180327518A1

    公开(公告)日：2018-11-15

    申请号：US15773040

    申请日：2016-11-22

    Applicant: Borealis AG

    Inventor： Kauno Alastalo ,  Mohammad Al-Haj Ali ,  Vasileios Kanellopoulos ,  Apostolos Krallis

    IPC: C08F2/01 ,  C08F2/14 ,  B01J19/18

    CPC classification number: C08F2/01 ,  B01J19/1837 ,  C08F2/12 ,  C08F2/14 ,  C08F10/02 ,  C08F10/06

    Abstract: A process for polymerising alpha-olefin monomers in a loop reactor comprising the steps of introducing a main feed stream (2) comprising at least one alpha-olefin monomer into the loop reactor (1); introducing a polymerisation catalyst into the loop reactor (1); polymerising the at least one alpha-olefin monomer in the presence of the polymerisation catalyst in the loop reactor (1) to produce a slurry comprising polyolefin particles; withdrawing an outlet stream (4) comprising at least a portion of the slurry from the loop reactor (1); adding a first feed stream (9) comprising the at least one alpha-olefin monomer and/or hydrogen to the outlet stream (4) to form a concentrator inlet stream (8); introducing the concentrator inlet stream (8) into a concentrator (5); withdrawing from the concentrator (5) an overflow stream (6) comprising the polyolefin particles, wherein the concentration of the polyolefin particles in the overflow stream (6) is smaller than in the concentrator inlet stream (8); withdrawing from the concentrator (5) a bottom outlet stream (12) comprising the polyolefin particles, wherein the concentration of the polyolefin particles in the bottom outlet stream (12) is greater than in the concentrator inlet stream (8); returning the overflow stream (6) into the loop reactor (1) in an area different from that from which the outlet stream (4) is withdrawn.

Patent Agency Ranking