Low density polymers and methods of making and using same
    1.
    发明授权
    Low density polymers and methods of making and using same 失效
    低密度聚合物及其制造和使用方法

    公开(公告)号:US6020387A

    公开(公告)日:2000-02-01

    申请号:US934744

    申请日:1997-09-22

    IPC分类号: C08G18/36 C08K3/00 C08G18/06

    CPC分类号: C08G18/36 C08K3/0008

    摘要: A low density polymer composition including a polymer component capable of being cured, a low density filler in an amount sufficient to reduce the density of the polymer and a thixotrope present in a sufficient amount to impart a sufficient viscosity and to inhibit separation of the filler from the polymer until after the polymer is cured. The resulting lightweight, filled polymer composition is a strong electrical insulator, has low shrinkage, a low coefficient of thermal expansion, low cured density and a soft filler that does not harden the polymer. Methods of preparing and using the low density polymer compositions are also disclosed.

    摘要翻译: 包含能够固化的聚合物组分的低密度聚合物组合物,足以降低聚合物密度的量的低密度填料和足以赋予足够粘度并且抑制填料的分离的触变剂 直到聚合物固化之后。 所得到的轻质填充聚合物组合物是强电绝缘体,具有低收缩率,低热膨胀系数,低固化密度和不使聚合物硬化的软填料。 还公开了制备和使用低密度聚合物组合物的方法。

    Extended polyurethanes
    4.
    发明授权
    Extended polyurethanes 失效
    扩展型聚氨酯

    公开(公告)号:US4533598A

    公开(公告)日:1985-08-06

    申请号:US553196

    申请日:1983-11-18

    摘要: A cyclic olefin extended polyurethane system comprising the reaction product of an isocyanate terminated polyisocyanate with a polyol in the presence of a cyclic olefin extender and, optionally, a liquid ester or other type of extender. Said polyurethane systems are cured, crosslinked, non-spewing, grease compatible, and reenterable. This extended polyurethane is further characterized as having superior insulating properties so that it can be used for repairing, encapsulation or reclaiming electrical or telephone cables as well as hard volume encapsulants for general elastomer use. The extended polyurethane is comprised of a defined polyurethane, novel extender combinations, and optionally, a coupling agent.

    摘要翻译: 一种环状烯烃延伸聚氨酯体系,其包含异氰酸酯封端的多异氰酸酯与多元醇在环烯烃增量剂和任选的液体酯或其它类型的增量剂存在下的反应产物。 所述聚氨酯体系是固化的,交联的,不喷出的,润滑脂相容的,并且可重新连接。 该扩展的聚氨酯的特征还在于具有优异的绝缘性能,使得其可用于修复,封装或回收电气或电话电缆以及用于一般弹性体使用的硬容积密封剂。 扩展的聚氨酯由限定的聚氨酯,新型的增量剂组合和任选的偶联剂组成。

    Ricinoleate modified hydrocarbon polyols
    6.
    发明授权
    Ricinoleate modified hydrocarbon polyols 失效
    蓖麻油酸改性烃多元醇

    公开(公告)号:US4742112A

    公开(公告)日:1988-05-03

    申请号:US6415

    申请日:1987-01-23

    IPC分类号: C08G18/65 C08G18/28

    CPC分类号: C08G18/6576 C08G18/6547

    摘要: Polyol mixtures having about 10 to 60 weight percent of a ricinoleate compound and 90 to 40 weight percent of a C.sub.2 -C.sub.6 hydrocarbon polymer having at least one hydroxyl group. Polyurethane compositions comprising the reaction product of this polyol mixture with an organic isocyanate compound. These compositions may optionally include certain extender compounds. Also, a method for lowering the viscosity of C.sub.2 -C.sub.6 hydrocarbon polymer having at least one hydroxyl group by adding a ricinoleate compound thereto.

    摘要翻译: 具有约10至60重量%的蓖麻酸酯化合物和90至40重量%的具有至少一个羟基的C 2 -C 6烃聚合物的多元醇混合物。 包括该多元醇混合物与有机异氰酸酯化合物的反应产物的聚氨酯组合物。 这些组合物可任选地包括某些增量剂化合物。 另外,通过向其中加入蓖麻油酸酯化合物来降低具有至少一个羟基的C 2 -C 6烃聚合物的粘度的方法。

    Process for using ricinoleate plasticized polyurethanes for sealing
electrical devices
    7.
    发明授权
    Process for using ricinoleate plasticized polyurethanes for sealing electrical devices 失效
    使用蓖麻醇酸增塑聚氨酯密封电气设备的方法

    公开(公告)号:US4705723A

    公开(公告)日:1987-11-10

    申请号:US945986

    申请日:1986-12-24

    摘要: A plasticized polyurethane gel system comprising the reaction product of an isocyanate compound and a polyol in the presence of a ricinoleate plasticizer compound having a total solubility parameter of between about 8.3 and 8.9 or between about 9.1 and 9.7. Said polyurethane systems are cured, cross-linked, nonspewing, grease compatible, and reenterable. This extended polyurethane is further characterized as having superior insulating properties so that it can be used of repairing, encapsulating or reclaiming electrical or telecommunication cables as well as for hard volume encapsulants or general elastomer use.

    摘要翻译: 一种增塑聚氨酯凝胶体系,其包含异氰酸酯化合物和多元醇在总溶解度参数为约8.3至8.9之间或约9.1至9.7之间的蓖麻油酸酯增塑剂化合物存在下的反应产物。 所述聚氨酯体系固化,交联,不透明,润滑脂相容,并且可重新连接。 该延伸的聚氨酯的特征还在于具有优异的绝缘性能,使得其可用于修复,封装或回收电缆或通信电缆以及硬体积密封剂或一般弹性体使用。