SEGMENTED UREA AND SILOXANE COPOLYMERS AND THEIR PREPARATION METHODS
    1.
    发明申请
    SEGMENTED UREA AND SILOXANE COPOLYMERS AND THEIR PREPARATION METHODS 审中-公开
    分离的尿素和硅氧烷共聚物及其制备方法

    公开(公告)号:WO2006002045A3

    公开(公告)日:2007-01-25

    申请号:PCT/US2005020946

    申请日:2005-06-15

    CPC classification number: C08G18/10 C08G18/61 C08G77/458 C08G18/3228 C08G18/50

    Abstract: Using novel synthetic techniques, siloxane-urea segmented copolymers are made. The copolymers advantageously contain a polyether interface, with controlled morphologies and properties. High molecular weight, high strength siloxane-urea copolymers with urea hard segment contents ranging from 5 to over 60% by weight may be prepared. Polymer properties that can independently be controlled include modulus (1.0 to 120 MPa), ultimate tensile strength (1.5 to 25 MPa), level of equilibrium water absorption (~ 0 to 100% by weight) and refractive index (1.43 to 1..46).

    Abstract translation: 使用新的合成技术制备硅氧烷 - 尿素分段共聚物。 共聚物有利地包含具有受控形态和性质的聚醚界面。 可以制备高分子量,高强度硅氧烷 - 尿素共聚物,尿素硬链段含量范围为5-60重量%。 可以独立控制的聚合物性质包括模量(1.0至120MPa),极限拉伸强度(1.5至25MPa),平衡吸水度(〜0至100重量%)和折射率(1.43至1..46 )。

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