Light stable one-shot urethane-urea elastomers
    3.
    发明授权
    Light stable one-shot urethane-urea elastomers 有权
    光稳定的一次性尿素 - 尿素弹性体

    公开(公告)号:US06562932B1

    公开(公告)日:2003-05-13

    申请号:US09976397

    申请日:2001-10-12

    IPC分类号: C08G1810

    摘要: This invention relates to a process for the production of an optically clear, light-stable polyurethane-urea elastomer having an onset softening point of at least 130° C., processed at ambient temperature and casted in a mold at an isocyanate index of 95 to 120. This process comprises reacting: A) a liquid polyisocyanate or polyisocyanate prepolymer having an NCO group content of about 5 to about 50%, an average functionality of 2 to 3, a viscosity of less than 5,000 mPa.s at 25° C.; and B) an isocyanate-reactive component; in the presence of C) at least one organometallic catalyst. The present invention also relates to the optically clear, light-stable polyurethane-urea elastomers produced by this process.

    摘要翻译: 本发明涉及一种生产具有至少130℃起始软化点的光学透明,轻质稳定的聚氨酯 - 脲弹性体的方法,在环境温度下加工并浇铸在异氰酸酯指数为95至 该方法包括使A)具有NCO基团含量为约5至约50%,平均官能度为2至3,25℃时粘度小于5,000mPa.s的液体多异氰酸酯或多异氰酸酯预聚物 ; 和B)异氰酸酯反应性组分; 在C)存在下至少有一种有机金属催化剂。 本发明还涉及通过该方法制备的光学透明的,轻质的聚氨酯 - 脲弹性体。

    Polyurethane-forming composition with adjustable mix viscosity, geotextile composites prepared therefrom and a process for producing such composites
    5.
    发明授权
    Polyurethane-forming composition with adjustable mix viscosity, geotextile composites prepared therefrom and a process for producing such composites 失效
    具有可调混合粘度的聚氨酯形成组合物,由其制备的土工织物复合材料和用于生产这种复合材料的方法

    公开(公告)号:US06632875B2

    公开(公告)日:2003-10-14

    申请号:US09809671

    申请日:2001-03-15

    IPC分类号: C08J300

    摘要: A polyurethane-forming reaction mixture characterized by its ability to be adjusted with respect to its viscosity in response to changing temperature and humidity conditions is achieved with a mixture that includes a liquid polyisocyanate having an isocyanate group content of at least 10% by weight, an isocyanate-reactive component which includes at least one high molecular weight polyol, a urethane catalyst and from 0.2 to 5 parts by weight per 100 parts by weight of isocyanate reactive component of a viscosity adjusting component. The viscosity adjusting component is preferably a diamine, a polyamine and/or an amine-terminated polyol. This reaction mixture is particularly useful for producing polyurethane geotextile composite materials useful as liners for ditches and canals.

    摘要翻译: 一种聚氨酯形成反应混合物的特征在于其响应于温度和湿度条件变化而相对于其粘度进行调节的能力是通过包括异氰酸酯基含量为至少10重量%的液体多异氰酸酯, 异氰酸酯反应性组分,其包含至少一种高分子量多元醇,氨基甲酸酯催化剂和0.2至5重量份/ 100重量份的粘度调节组分的异氰酸酯反应性组分。 粘度调节组分优选为二胺,多胺和/或胺封端的多元醇。 该反应混合物特别适用于生产用作沟渠和沟渠衬里的聚氨酯土工织物复合材料。

    Process for patching canals and ditches with a non-sagging polyurethane composition
    7.
    发明授权
    Process for patching canals and ditches with a non-sagging polyurethane composition 失效
    用不下垂聚氨酯组合物修补运河和沟渠的方法

    公开(公告)号:US06786680B2

    公开(公告)日:2004-09-07

    申请号:US09809453

    申请日:2001-03-15

    IPC分类号: B05D302

    摘要: Seams are sealed and surface defects are repaired in a polyurethane/geotextile composite applied over concrete, an earthen canal or a ditch with a non-sagging polyurethane composition. This non-sagging polyurethane composition is a reaction product of a polyisocyanate, a high molecular weight polyhydroxyl compound, and a compound containing at least two amino groups. A low molecular weight diol or triol, a catalyst and a filler are optionally included in the polyurethane-forming reaction mixture.

    摘要翻译: 接缝是密封的,表面缺陷在应用于混凝土,土运道或具有不流挂聚氨酯组合物的沟渠的聚氨酯/土工织物复合物中进行修复。 该非流挂聚氨酯组合物是多异氰酸酯,高分子量多羟基化合物和含有至少两个氨基的化合物的反应产物。 任选地,在形成聚氨酯的反应混合物中包含低分子量二醇或三醇,催化剂和填料。

    Method for producing a polyurethane/geofabric composite
    9.
    发明授权
    Method for producing a polyurethane/geofabric composite 失效
    生产聚氨酯/地质复合材料的方法

    公开(公告)号:US06582771B1

    公开(公告)日:2003-06-24

    申请号:US10138995

    申请日:2002-05-03

    IPC分类号: B05D700

    摘要: The present invention is directed to a method for impregnating at least one geofabric with a liquid solidifiable polyurethane composition, conforming at least one polyurethane-impregnated geofabric to a surface (such as to the surface of a canal, ditch and/or pipe) and allowing the liquid solidifiable polyurethane composition to cure and form a polyurethane/geofabric composite. The liquid solidifiable polyurethane composition is the reaction product of COMPONENT A, COMPONENT B and COMPONENT C, as defined herein. COMPONENT C has the same equivalent weight as COMPONENT B and contains catalyst. One advantage of the present invention is that the ratio of COMPONENT B to COMPONENT C can be adjusted during processing without changing the isocyanate index. As a result, geltimes of liquid solidifiable polyurethane compositions of the present invention can be adjusted to accommodate changes in outdoor application temperature.

    摘要翻译: 本发明涉及一种用液体可固化的聚氨酯组合物浸渍至少一种地砖的方法,该组合物使至少一种聚氨酯浸渍的地砖与表面(例如,到管道表面,沟渠和/或管道)相一致并允许 液体固化聚氨酯组合物固化并形成聚氨酯/地质复合材料。 液体可固化的聚氨酯组合物是如本文所定义的组分A,组分B和组分C的反应产物。 组分C具有与组分B相同的当量重量并含有催化剂。 本发明的一个优点是组分B与组分C的比例可以在加工过程中调节而不改变异氰酸酯指数。 结果,可以调整本发明的液体可固化的聚氨酯组合物的凝胶时间以适应室外施用温度的变化。

    Liquid MDI adducts wtih improved freeze stability
    10.
    发明授权
    Liquid MDI adducts wtih improved freeze stability 失效
    液体MDI加合物改善了冻结稳定性

    公开(公告)号:US06482913B1

    公开(公告)日:2002-11-19

    申请号:US09499316

    申请日:2000-02-07

    IPC分类号: C08G1870

    CPC分类号: C08G18/7664 C08G18/725

    摘要: This invention relates to liquid polyisocyanate compositions having improved freeze stability. These liquid polyisocyanate compositions have an NCO group content of 15 to 30%, and comprise (A) an allophanate-modified MDI and having an NCO group content of 16 to 32.5%, (B) a low molecular weight branched aliphatic dihydroxy compound, and (C) an epoxide functional compound which is present in an amount of 0.01 to 1% by weight, based on the combined weight of components (A) and (B).

    摘要翻译: 本发明涉及具有改进的冷冻稳定性的液体多异氰酸酯组合物 这些液体多异氰酸酯组合物的NCO基含量为15〜30%,并且含有(A)脲基甲酸酯改性MDI,NCO基含量为16〜32.5%,(B)低分子量支链脂肪族二羟基化合物,以及 (C)基于组分(A)和(B)的组合重量,以0.01至1重量%的量存在的环氧官能化合物。