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    Oxymethylene Copolymers and the Use Thereof and Process for the Preparation of Oxymethylene Copolymers
    5.
    发明申请
    Oxymethylene Copolymers and the Use Thereof and Process for the Preparation of Oxymethylene Copolymers 失效
    亚甲基共聚物及其用途和制备亚甲基共聚物的方法

    公开(公告)号：US20090270572A1

    公开(公告)日：2009-10-29

    申请号：US12423625

    申请日：2009-04-14

    申请人： Michael Haubs ,  Michael Hoffmockel ,  Jurgen Lingnau ,  Robert Gronner ,  Michael Gene Yearwood

    发明人： Michael Haubs ,  Michael Hoffmockel ,  Jurgen Lingnau ,  Robert Gronner ,  Michael Gene Yearwood

    IPC分类号： C08F4/32 ,  C08F16/12 ,  C08F16/34 ,  C08F24/00 ,  C08F2/00

    CPC分类号： C08G2/24 ,  C08G2/04 ,  C08G2/34

    摘要： Oxymethylene copolymers having a high proportion of terminal alkyl ether groups and having terminal hydroxyalkylene groups are described. These polymers are distinguished by high thermal stability and high hot water resistance.Furthermore, a process for the preparation of oxymethylene copolymers is described in which the polymerization of at least one monomer forming —CH2—O— units is effected in the presence of at least one acetal of formaldehyde and of at least one initiator of cationic polymerization and the initiator of cationic polymerization is used in an amount of less than or equal to 10−4 mol %, based on the amount of the monomers present at the beginning of the polymerization and forming —CH2—O— units, in which starting materials of the polymerization are used such that the content of water and formic acid at the beginning of the polymerization is less than or equal to 40 ppm, and in which the initiator and/or the active polymer chains are deactivated by treatment of the prepared polymer with a base-containing protic solvent.

    摘要翻译： 描述了具有高比例的末端烷基醚基团并具有末端羟基亚烷基的甲醛共聚物。 这些聚合物的特征在于高热稳定性和高耐热水性。 此外，描述了制备甲醛共聚物的方法，其中形成-CH 2 -O-单元的至少一种单体的聚合在至少一种甲醛缩醛和至少一种阳离子聚合引发剂的存在下进行，并且 基于聚合开始时存在的单体的量和形成-CH 2 -O-单元，阳离子聚合引发剂的用量小于或等于10-4mol％，其中起始原料为 使用聚合，使得聚合开始时的水和甲酸的含量小于或等于40ppm，并且其中引发剂和/或活性聚合物链通过用制备的聚合物处理而失活 含碱性质子溶剂。

    Oxymethylene copolymers and the use thereof and process for the preparation of oxymethylene copolymers
    6.
    发明授权
    Oxymethylene copolymers and the use thereof and process for the preparation of oxymethylene copolymers 失效
    甲醛共聚物及其用途和制备甲醛共聚物的方法

    公开(公告)号：US08133966B2

    公开(公告)日：2012-03-13

    申请号：US12423625

    申请日：2009-04-14

    申请人： Michael Haubs ,  Michael Hoffmockel ,  Jürgen Lingnau ,  Robert Gronner ,  Michael Gene Yearwood

    发明人： Michael Haubs ,  Michael Hoffmockel ,  Jürgen Lingnau ,  Robert Gronner ,  Michael Gene Yearwood

    IPC分类号： C08G12/00

    CPC分类号： C08G2/24 ,  C08G2/04 ,  C08G2/34

    摘要： Oxymethylene copolymers having a high proportion of terminal alkyl ether groups and having terminal hydroxyalkylene groups are described. These polymers are distinguished by high thermal stability and high hot water resistance. Furthermore, a process for the preparation of oxymethylene copolymers is described in which the polymerization of at least one monomer forming —CH2—O— units is effected in the presence of at least one acetal of formaldehyde and of at least one initiator of cationic polymerization and the initiator of cationic polymerization is used in an amount of less than or equal to 10−4 mol %, based on the amount of the monomers present at the beginning of the polymerization and forming —CH2—O— units, in which starting materials of the polymerization are used such that the content of water and formic acid at the beginning of the polymerization is less than or equal to 40 ppm, and in which the initiator and/or the active polymer chains are deactivated by treatment of the prepared polymer with a base-containing protic solvent.

    摘要翻译： 描述了具有高比例的末端烷基醚基团并具有末端羟基亚烷基的甲醛共聚物。 这些聚合物的特征在于高热稳定性和高耐热水性。 此外，描述了制备甲醛共聚物的方法，其中形成-CH 2 -O-单元的至少一种单体的聚合在至少一种甲醛缩醛和至少一种阳离子聚合引发剂的存在下进行，并且 基于聚合开始时存在的单体的量和形成-CH 2 -O-单元，阳离子聚合引发剂的用量小于或等于10-4mol％，其中起始原料为 使用聚合，使得聚合开始时的水和甲酸的含量小于或等于40ppm，并且其中引发剂和/或活性聚合物链通过用制备的聚合物处理而失活 含碱性质子溶剂。