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    Manufacture of flexible foams
    2.
    发明授权
    Manufacture of flexible foams 失效
    制造柔性泡沫

    公开(公告)号：US4251639A

    公开(公告)日：1981-02-17

    申请号：US28313

    申请日：1979-04-09

    申请人： Wolfgang Jarre ,  Herbert Stutz ,  Ernst Schoen

    发明人： Wolfgang Jarre ,  Herbert Stutz ,  Ernst Schoen

    IPC分类号： C08G18/00 ,  C08G18/72 ,  C08G18/76 ,  C08G18/80 ,  C08G18/14

    CPC分类号： C08G18/8035 ,  C08G18/8041

    摘要： This invention concerns a process for the manufacture of flexible polyurethane foams from urethane-modified aromatic polyisocyanates having an NCO content of 15 to 30 percent by weight and a viscosity of 100 to 2000 centipoises at 20.degree. C., which are obtained by reaction of a mixture of diphenylmethane diisocyanates and polyphenylene polymethylene polyisocyanates containing 55 to 85 percent by weight of diphenylmethane diisocyanate based on the total weight of the polyisocyanate mixture and a hydroxyl compound with 2 to 4 Zerewitinoff active hydrogen atoms and a molecular weight of 60 to 1500, in an equivalency ratio of NCO groups to active hydrogen atoms of the hydroxyl compound of 2:1 to 60:1, polyols, catalysts, blowing agents, and optionally, chain extenders, auxiliaries, and additives.

    摘要翻译： 本发明涉及一种由氨基甲酸酯改性的芳族聚异氰酸酯制备柔性聚氨酯泡沫体的方法，该聚氨酯改性芳族聚异氰酸酯在20℃下的NCO含量为15-30％（重量），粘度为100-2000厘泊，这是通过 基于多异氰酸酯混合物的总重量含有55-85重量％的二苯基甲烷二异氰酸酯和具有2-4个Zerewitinoff活性氢原子并且分子量为60至1500的羟基化合物的二苯基甲烷二异氰酸酯和聚亚苯基多亚甲基多异氰酸酯的混合物， NCO基团与羟基化合物的活性氢原子的当量比为2:1至60:1，多元醇，催化剂，发泡剂和任选的增链剂，助剂和添加剂。

    Low density energy management urethane foam
    3.
    发明授权
    Low density energy management urethane foam 失效
    低密度能量管理聚氨酯泡沫

    公开(公告)号：US4190712A

    公开(公告)日：1980-02-26

    申请号：US936815

    申请日：1978-08-25

    申请人： Kirby E. L. Flanagan

    发明人： Kirby E. L. Flanagan

    IPC分类号： B60R19/18 ,  C08G18/63 ,  C08G18/65 ,  C08G18/69 ,  C08G18/80

    CPC分类号： C08G18/6564 ,  C08G18/632 ,  C08G18/6558 ,  C08G18/6588 ,  C08G18/698 ,  C08G18/80 ,  C08G18/8035 ,  B60R2019/186 ,  C08G2101/0058 ,  C08G2101/0066 ,  C08G2101/0083 ,  Y10S264/14

    摘要： An impact energy-absorbing, low density urethane foam for use in automobile bumpers has good moldability and is relatively temperature insensitive, i.e. gives approximately the same physical performance over a wide range of temperatures. This foam is characterized by its good multiple impact performance and low compression set values. The foam is water blown in a closed mold from a quasi-prepolymer system. The molded density is preferably in the range of 5 to 10 PCF.The foam formulation is based on a polymer polyol of a poly (oxypropylene/ethylene) triol reacted with a styrene/acrylonitrile monomer mixture which triol thus modified is reacted with (1) a roughly 1/5 to 1.5/1 weight amount of a hydroxy terminated polybutadiene homopolymer based on polymer polyol, (2) a 50 to 150 equivalent weight polyol crosslinker of 2 to 6 functionality, (3) a MDI glycol or triol quasi-prepolymer, and (4) some water.

    摘要翻译： 用于汽车保险杠的冲击能量吸收低密度聚氨酯泡沫具有良好的成型性，并且相对温度不敏感，即在宽的温度范围内产生大致相同的物理性能。 该泡沫的特征在于其良好的多重冲击性能和低压缩永久变形值。 泡沫是由准预聚物体系在闭合的模具中进行水吹。 成型密度优选在5至10个PCF的范围内。 泡沫制剂基于与苯乙烯/丙烯腈单体混合物反应的聚（氧化丙烯/乙烯）三醇的聚合物多元醇，其被修饰的三醇与（1）约1/5至1.5 / 1重量的羟基 基于聚合物多元醇的封端的聚丁二烯均聚物，（2）2至6个官能度的50至150当量多元醇交联剂，（3）MDI二醇或三醇准预聚物，和（4）一些水。

    Process for the preparation of fluorochlorohydrocarbon-free, low-density polyurethan soft foams and soft elastic polyurethan molding foams and polyisocyanate mixtures modified with urethan groups on diphenylmethane-diisocyanate base
    8.
    发明授权
    Process for the preparation of fluorochlorohydrocarbon-free, low-density polyurethan soft foams and soft elastic polyurethan molding foams and polyisocyanate mixtures modified with urethan groups on diphenylmethane-diisocyanate base 失效
    用于制备氟代氯代烃，低密度聚氨酯软泡沫和柔性弹性聚氨酯成型泡沫的方法和在二苯基甲烷二异氰酸酯基础上用氨基甲酸酯基团改性的多异氰酸酯混合物

    公开(公告)号：US5374667A

    公开(公告)日：1994-12-20

    申请号：US24589

    申请日：1993-03-01

    申请人： Werner Hinz ,  Ruth Zschiesche ,  Heinz-Dieter Lutter ,  Bernd Bruchmann

    发明人： Werner Hinz ,  Ruth Zschiesche ,  Heinz-Dieter Lutter ,  Bernd Bruchmann

    IPC分类号： C08G18/10 ,  C08G18/48 ,  C08G18/76 ,  C08G18/80 ,  C08G18/00

    CPC分类号： C08G18/8035 ,  C08G18/10 ,  C08G18/4837 ,  C08G18/7664 ,  C08G2101/0008 ,  C08G2101/005 ,  C08G2101/0083 ,  Y10S521/914

    摘要： The invention provides a method for the preparation of fluorochlorohydrocarbon(FCHC)-free polyurethane soft (molded) foam materials with low density, by reactingA) liquid polyisocyanate mixtures containing bound urethane groups, containing 22 to 30 weight percent of NCO groups, which in turn are prepared by reacting a mixture of diphenylmethane-diisocyanate and polyphenyl-polymethylene-polyisocyanates (raw MDI) with at least one polyoxypropylene-polyoxyethylene-polyol with a functionality between 2.5 and 3.5, a hydroxyl number between 50 and 90 and a polymerized ethylene oxide group concentration ranging from more than 30 to less than 50 weight percent, relative to the weight of the polymerized ethylene oxide and 1,2 propylene oxide groups, or by reacting of 4,4'diphenylmethane-diisocyanate (MDI) or and MDI-isomeric mixture with the above-named polyoxypropylene-polyoxyethylene-polyol to an NCO-group-containing quasi-prepolymer, and diluting this quasi-prepolymer with raw-MDI, withB) higher-molecular polyhydroxyl compounds and, if appropriateC) low-molecular chain lengthening and/or cross-linkage-promoting materialsD) propellants,E) catalysts as well as if appropriate,F) auxiliary materials and/or additives, as well as the polyisocyanate mixtures modified with urethane groups (A) which are utilizable in accordance with the process of the invention.

    摘要翻译： 本发明提供了一种通过使含有22-30％（重量）NCO基团的结合的氨基甲酸酯基团的液体多异氰酸酯混合物反应来制备低密度的氟氯烃（FCHC） - 软质（模塑）泡沫材料的方法， 通过使二苯基甲烷 - 二异氰酸酯和聚苯基 - 多亚甲基多异氰酸酯（原MDI）与至少一种官能度在2.5和3.5之间，羟基数在50和90之间的聚氧化丙烯 - 聚氧乙烯 - 多元醇与聚合的环氧乙烷 相对于聚合的环氧乙烷和1,2-环氧丙烷基团的重量，或通过4,4'-二苯基甲烷二异氰酸酯（MDI）或MDI异构体（MDI）的反应，组浓度范围从大于30至小于50重量％ 与上述聚氧丙烯 - 聚氧乙烯 - 多元醇的混合物与含有NCO基的准预聚物混合，并用B-MDI稀释该准预聚物，B） 高分子量多羟基化合物，如果合适C）低分子链延长和/或交联促进材料D）推进剂，E）催化剂以及适当的F）辅助材料和/或添加剂，以及 用氨基甲酸酯基团（A）改性的多异氰酸酯混合物，其可根据本发明的方法使用。