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    • 9. 发明授权
    • Prepolymers containing isocyanate groups and a method for the production thereof
    • 含有异氰酸酯基团的预聚物及其制备方法
    • US06495652B1
    • 2002-12-17
    • US09673046
    • 2000-10-09
    • Michael ReicheltUdo RotermundRenate HempelPeter FalkePeter von MalotkiHolger Seifert
    • Michael ReicheltUdo RotermundRenate HempelPeter FalkePeter von MalotkiHolger Seifert
    • C08G1876
    • C09K3/1021C08G18/10C08G18/5006C08G18/7664C08G2101/0008C08G2101/0025C08G2101/0083C08G18/6674
    • Prepolymers which contain isocyanate groups, have an NCO content of at least 30.0% by weight and can be prepared by reacting an isocyanate mixture consisting predominantly of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates and having a proportion of two-ring isomers of not more than 74% by weight with at least 4-functional polyols or a mixture of polyols having a mean functionality of at least 4, where the polyols or polyol mixtures have a hydroxyl number of from 200 to 1650 mg KOH/g and a number average molecular weight of less than 1100 g/mol. The present invention also provides a process for preparing these prepolymers containing isocyanate groups, provides for their use for producing polyurethanes and provides a process for producing polyurethanes by reacting at least one novel prepolymer containing isocyanate groups, if desired in admixture with further organic and/or modified organic isocyanates (a), with compounds having at least two reactive hydrogen atoms (b) in the presence of, if desired, blowing agents (c), catalysts (d) and, if desired, further auxiliaries and/or additives (e).
    • 含有异氰酸酯基的预聚物的NCO含量至少为30.0重量%,可以通过使主要由二苯基甲烷二异氰酸酯和聚苯基聚亚甲基多异氰酸酯组成的异氰酸酯混合物与二苯基聚亚甲基多异氰酸酯的比例为不超过74%的双环异构体比例 重量与至少4-官能多元醇或平均官能度至少为4的多元醇的混合物,其中多元醇或多元醇混合物的羟值为200至1650mg KOH / g,数均分子量小于 1100g / mol。 本发明还提供了制备这些含有异氰酸酯基团的预聚物的方法,提供了它们用于生产聚氨酯的方法,并且提供了通过使至少一种含有异氰酸酯基团的新型预聚物(如果需要)与另外的有机和/或 如果需要,发泡剂(c),催化剂(d)和(如果需要的话)其它助剂和/或添加剂(e)的存在下,改性有机异氰酸酯(a),具有至少两个反应性氢原子的化合物(b) )。
    • 10. 发明申请
    • PREPOLYMERS CONTAINING ISOCYANATE GROUPS AND A METHOD FOR THE PRODUCTION THEREOF
    • 含异氰酸酯基及其制造方法预聚物
    • WO9961501A8
    • 2000-01-27
    • PCT/EP9903195
    • 1999-05-10
    • BASF AGREICHELT MICHAELROTERMUND UDOHEMPEL RENATEFALKE PETERVON MALOTKI PETERSEIFERT HOLGER
    • REICHELT MICHAELROTERMUND UDOHEMPEL RENATEFALKE PETERVON MALOTKI PETERSEIFERT HOLGER
    • C08G18/10C08G18/50C08G18/76C09K3/10C08G18/48
    • C09K3/1021C08G18/10C08G18/5006C08G18/7664C08G2101/0008C08G2101/0025C08G2101/0083C08G18/6674
    • The invention relates to prepolymers which contain isocyanate groups and which can be produced by reacting an isocyanate mixture, said mixture being predominantly comprised of diphenylmethane diisocyanates and polyphenyl polymethylene polyisocyanates, with a maximum proportion of two-core isomers of 74 wt.% with at least 4 functional polyols or with a mixture of polyols having an average functionality of at least 4. The polyols or polyol mixture comprise(s) a hydroxyl value ranging from 200 to 1650 mg KOH/g and an average molar mass of less than 1100 g/mol with an NCO content of at least 30.0 wt.%. In addition, the invention relates to a method for producing these prepolymers which contain isocyanate groups, to their use for producing polyurethanes, and to a method for producing polyurethanes by reacting at least one of the inventive prepolymers which contain isocyanate groups, optionally mixed with additional organic and/or modified organic isocyanates (a), with compounds having at least two reactive hydrogen atoms (b) in the presence of optional expanding agents (c), catalysts (d), optional additional auxiliary agents and/or additives (e).
    • 本发明涉及含有可获得异氰酸酯基通过由二苯基甲烷二异氰酸酯和多苯基多亚甲基多异氰酸酯的主要的异氰酸酯混合物反应的预聚物,具有至少4官能的多元醇的不大于74重量%或具有至少4的平均官能度的多元醇的混合物两环异构体的比例 方法,其中所述多元醇或多元混合物具有的羟基数为200至1650毫克KOH /克和低于1100克/ mol的数均分子量,具有至少30.0重量%的NCO含量。 本发明的目的也可用于,任选地与另外的有机和/或改性的有机异氰酸酯的混合物制备含异氰酸酯基团,它们用于制备聚氨酯这些预聚物和含有异氰酸酯基的至少一种本发明的预聚物反应制备的聚氨酯的处理的方法(a)中 与具有化合物中的至少两个反应性氢原子(b)中,如果需要的话的情况下,发泡剂(C),催化剂(D),以及任选的其它助剂和/或添加剂(E)。