Isocyanate prepolymers, a process for their preparation and their use
    1.
    发明授权
    Isocyanate prepolymers, a process for their preparation and their use 失效
    异氰酸酯预聚物,其制备方法及其应用

    公开(公告)号:US5574124A

    公开(公告)日:1996-11-12

    申请号:US510887

    申请日:1995-08-03

    摘要: Isocyanate prepolymers having an NCO content of 1.5 to 5.0 wt. % and a monomeric diisocyanate content of less than 0.5 wt. % which are the reaction products ofA) aromatic or cycloaliphatic diisocyanates withB) mixtures ofB1) polyether polyols having a molecular weight of 1000 to 3000 andB2) polyester carbonate diols having a molecular weight of 700 to 3000,wherein components B1) and B2) are present in a weight ratio of 0.25:1 to 1.5:1;a process for the preparation of these isocyanate prepolymers by reacting the preceding starting materials at an NCO/OH equivalent ratio of at least 1.5:1 and optionally with subsequent removing unreacted monomeric diisocyanate by distillation; and the use of these isocyanate prepolymers as binders for sealing or coating compositions.

    摘要翻译: NCO含量为1.5〜5.0重量%的异氰酸酯预聚物 %,单体二异氰酸酯含量小于0.5wt。 %,其为A)芳族或脂环族二异氰酸酯与B)B1)分子量为1000〜3000的聚醚多元醇和B2的混合物的反应产物)分子量为700〜3000的聚酯碳酸酯二醇,其中组分B1)和 B2)以0.25:1至1.5:1的重量比存在; 通过使前述原料以至少1.5:1的NCO / OH当量比反应制备这些异氰酸酯预聚物的方法,任选地随后通过蒸馏除去未反应的单体二异氰酸酯; 以及这些异氰酸酯预聚物作为粘合剂用于密封或涂布组合物的用途。

    Polyether-polysiloxane polyols
    2.
    发明授权
    Polyether-polysiloxane polyols 有权
    聚醚 - 聚硅氧烷多元醇

    公开(公告)号:US07834082B2

    公开(公告)日:2010-11-16

    申请号:US11654173

    申请日:2007-01-17

    IPC分类号: C08L83/00

    CPC分类号: C08G77/46 C08L83/12

    摘要: A method of making a polyether-polydialkylsiloxane block copolymer is provided. The method comprises providing a mixture comprising at least one alkylene oxide and at least one silanol-terminated polydialkylsiloxane; and polymerizing the mixture in the presence of a double metal cyanide complex catalyst, and optionally in the presence of an aprotic solvent and/or an antioxidant. A polyether-polydialkylsiloxane block copolymer having a molecular weight of 150-50,000 g/mole and having a polydispersity index of 1.0 to 1.5 made by the above method is also provided.

    摘要翻译: 提供了制备聚醚 - 聚二烷基硅氧烷嵌段共聚物的方法。 该方法包括提供包含至少一种烯化氧和至少一种硅烷醇封端的聚二烷基硅氧烷的混合物; 并在双金属氰化物配合物催化剂的存在下,任选地在非质子溶剂和/或抗氧化剂的存在下使混合物聚合。 还提供了通过上述方法制备的分子量为150-50,000g / mol并具有1.0至1.5的多分散指数的聚醚 - 聚二烷基硅氧烷嵌段共聚物。

    Polyether-polysiloxane polyols
    4.
    发明申请
    Polyether-polysiloxane polyols 有权
    聚醚 - 聚硅氧烷多元醇

    公开(公告)号:US20080171829A1

    公开(公告)日:2008-07-17

    申请号:US11654173

    申请日:2007-01-17

    CPC分类号: C08G77/46 C08L83/12

    摘要: A method of making a polyether-polydialkylsiloxane block copolymer is provided. The method comprises providing a mixture comprising at least one alkylene oxide and at least one silanol-terminated polydialkylsiloxane; and polymerizing the mixture in the presence of a double metal cyanide complex catalyst, and optionally in the presence of an aprotic solvent and/or an antioxidant. A polyether-polydialkylsiloxane block copolymer having a molecular weight of 150-50,000 g/mole and having a polydispersity index of 1.0 to 1.5 made by the above method is also provided.

    摘要翻译: 提供了制备聚醚 - 聚二烷基硅氧烷嵌段共聚物的方法。 该方法包括提供包含至少一种烯化氧和至少一种硅烷醇封端的聚二烷基硅氧烷的混合物; 并在双金属氰化物配合物催化剂的存在下,任选地在非质子溶剂和/或抗氧化剂的存在下使混合物聚合。 还提供了通过上述方法制备的分子量为150-50,000g / mol并具有1.0至1.5的多分散指数的聚醚 - 聚二烷基硅氧烷嵌段共聚物。