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    • 1. 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) )。
    • 4. 发明授权
    • Production of rigid polyurethane foams
    • 生产刚性聚氨酯泡沫
    • US5895792A
    • 1999-04-20
    • US935911
    • 1997-09-23
    • Udo RotermundRenate HempelHolger SeifertWerner Wiegmann
    • Udo RotermundRenate HempelHolger SeifertWerner Wiegmann
    • C08J9/12C08G18/06C08G18/48C08G18/50
    • C08G18/5033C08G18/482C08G2101/0025C08G2101/0033C08G2101/005C08G2101/0058C08G2101/0083
    • In a process for producing rigid polyurethane foams having improved heat distortion resistance and reduced thermal conductivity by reactinga) polyisocyanates withb) compounds containing hydrogen atoms reactive toward isocyanates, in the presence ofc) water, and, if desired,d) physically acting blowing agents ande) catalysts and known auxiliaries and/or additives, the compounds b) containing hydrogen atoms reactive toward isocyanates are a polyol mixture comprisingb1) a polyol which can be prepared by addition of ethylene oxide and/or propylene oxide onto a hexitol or a hexitol mixture, with the total hexitol content of the polyol mixture being from 15 to 30% by weight, based on the polyol mixture, andb2) a polyol which can be prepared by addition of ethylene oxide and/or propylene oxide onto one or more aromatic amines, with the total amine content of the polyol mixture being from 1 to 10% by weight, based on the polyol mixture, and the amount of the polyol mixture in the component b) is from 60 to 100 parts by mass per 100 parts by mass of the component b).
    • 在制备具有改善的耐热变形性和降低热导率的硬质聚氨酯泡沫体的方法中,通过使a)多异氰酸酯与b)在c)水和(如果需要)d)的存在下,对含有氢原子的异氰酸酯反应的化合物d) 发泡剂和e)催化剂和已知的助剂和/或添加剂,包含对异氰酸酯具有反应性的氢原子的化合物b)是多元醇混合物,其包含b1)可以通过在己糖醇中加入环氧乙烷和/或环氧丙烷制备的多元醇 或己糖醇混合物,其中多元醇混合物的总己糖醇含量为基于多元醇混合物的15至30重量%,和b2)可通过将环氧乙烷和/或环氧丙烷加成到一个上制备的多元醇 或更多的芳族胺,多元醇混合物的总胺含量基于多元醇混合物为1至10重量%,并且组分中的多元醇混合物的量 b)相对于100质量份组分b)为60〜100质量份。
    • 10. 发明申请
    • RIGID POLYURETHANE FOAMS
    • 刚性聚氨酯泡沫塑料
    • US20100016461A1
    • 2010-01-21
    • US12522002
    • 2008-01-09
    • Holger SeifertJohann KlassenLouis Du RieuWerner WiegmannGuenter Matzke
    • Holger SeifertJohann KlassenLouis Du RieuWerner WiegmannGuenter Matzke
    • C08G18/72
    • C08G18/7664C08G18/4804C08G18/797
    • The invention relates to rigid polyurethane foams which can be produced by reacting a) polyisocyanates with b) compounds having at least two hydrogen atoms which are reacted toward isocyanate groups in the presence of c) blowing agents,  wherein the polyisocyanate a) used is a mixture of diphenylmethane diisocyanate and polyphenylenepolymethylene polyisocyanates comprising a1) 30-35% by weight of diphenylmethane diisocyanate, a2) 21-28% by weight of polyphenylenepolymethylene polyisocyanate having three aromatic rings, a3) 8-13% by weight of polyphenylenepolymethylene polyisocyanate having four aromatic rings, a4) 24-41% by weight of polyphenylenepolymethylene polyisocyanate having five or more aromatic rings, where the percentages by weight of the components a1) to a4) are based on the total weight of the components a1) to a4) and add up to 100% by weight.
    • 本发明涉及硬质聚氨酯泡沫体,其可通过使a)多异氰酸酯与b)在c)发泡剂存在下与至少两个氢原子反应的化合物反应而制备,其中使用的多异氰酸酯a)是混合物 二苯基甲烷二异氰酸酯和聚亚苯基多亚甲基多异氰酸酯,其包含a1)30-35重量%的二苯基甲烷二异氰酸酯,a2)21-28重量%的具有三个芳环的聚亚苯基多亚甲基多异氰酸酯,a3)8-13重量%的具有四个芳环的聚苯基聚亚甲基多异氰酸酯 ,a4)24-41重量%的具有五个或更多个芳环的聚亚苯基多亚甲基多异氰酸酯,其中组分a1)至a4)的重量百分比基于组分a1)至a4的总重量),并加起来 100重量%。