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    • 8. 发明授权
    • Preparation of flexible, soft polyurethane foams having viscoelastic,
structure-borne soundproofing properties, and polyoxyalkylene-polyol
mixtures which can be used for this purpose
    • 制备具有粘弹性,结构隔音性能的柔性,软质聚氨酯泡沫,以及可用于此目的的聚氧化烯 - 多元醇混合物
    • US5420170A
    • 1995-05-30
    • US619265
    • 1990-11-28
    • Heinz-Dieter LutterReinhard LeppkesPeter HornWalter DeckerVolker HaaseWerner Hinz
    • Heinz-Dieter LutterReinhard LeppkesPeter HornWalter DeckerVolker HaaseWerner Hinz
    • C08G18/48C08G18/66
    • C08G18/4804C08G18/4841C08G18/6674C08G2101/0008C08G2101/0058C08G2101/0083C08G2350/00Y10S521/914
    • The present invention relates to a process for the preparation of flexible, soft polyurethane foams having viscoelastic, structure-borne soundproofing properties in a temperature range of from -20.degree. C. to +80.degree. C. by reactinga) a polyoxyalkylene-polyol mixture containingai) block polyoxypropylene-polyoxyethylene-polyol mixture having a hydroxyl number of from 14 to 65 and containing from 2 to 9% by weight of terminal ethylene oxide units, based on the weight of the polyoxypropylene units, prepared by anionic polymerization, at elevated temperatures, of 1,2-propyleneoxide onto an initiator molecule mixture having a mean functionality of from 2.3 to 2.8, comprising water and glycerol and/or trimethylolpropane, and polymerization of acylene oxide onto the resultant polyoxypropylene adduct, andaii) one or more difunctional and/or trifunctional polyoxypropylene-polyoxyethylene-polyol containing from 60 to 85% by weight of oxyethylene units, based on the total weight of polymerized alkylene oxide units, and having a hydroxyl number of from 20 to 80, andb) if desired low-molecular-weight chain extenders withc) organic and/or modified organic polyisocyanates in the presence ofd) catalysts,e) blowing agents, preferably water, and, if desired,f) auxiliaries and/or additives,and to the polyoxyalkylene-polyol mixtures (a) which can be used for this purpose.
    • 本发明涉及一种制备柔软的软质聚氨酯泡沫的方法,该泡沫在-20℃至+ 80℃的温度范围内具有粘弹性结构的隔音性能,通过使a)聚氧化烯 - 多元醇混合物 含有ai)嵌段聚氧丙烯 - 聚氧乙烯 - 多元醇混合物,羟基数为14至65,并含有2至9重量%的末端环氧乙烷单元,基于通过阴离子聚合制备的聚氧丙烯单元的重量,在升高的 温度,1,2-环氧丙烷至平均官能度为2.3至2.8的引发剂分子混合物,包含水和甘油和/或三羟甲基丙烷,以及将芳族氧化物聚合到所得聚氧丙烯加合物上,以及aii)一种或多种双官能 和/或含有60至85重量%的氧化乙烯单元的三官能聚氧丙烯 - 聚氧乙烯 - 多元醇,基于聚合的Al的总重量 环氧乙烷单元,羟值为20至80,和b)如果需要,在d)催化剂存在下,c)有机和/或改性有机多异氰酸酯的低分子增链剂,e)发泡剂, 如果需要,f)助剂和/或添加剂,以及可用于该目的的聚氧化烯 - 多元醇混合物(a)。
    • 9. 发明授权
    • Polyoxypropylene-polyols and polyoxypropylene-polyoxyethylene-polyols
containing hydroxyl groups
    • 含有羟基的聚氧丙烯 - 多元醇和聚氧丙烯 - 聚氧乙烯 - 多元醇
    • US5340916A
    • 1994-08-23
    • US966228
    • 1992-10-26
    • Rolf HennWerner HinzLudwig SchusterKlaus Vorspohl
    • Rolf HennWerner HinzLudwig SchusterKlaus Vorspohl
    • C08G18/48C08G65/26C08G65/28C07C43/10C08G65/08
    • C08G18/4816C08G18/4829C08G65/2606C08G2101/0025C08G2101/005C08G2105/02Y10S521/902
    • The present invention relates to a process for the preparation of a hard foam containing urethane groups or urethane and isocyanurate groups by the polyisocyanate polyaddition process, by reactinga) a polyoxypropylene- or polyoxyethylene-polyoxypropylene-polyol containing secondary hydroxyl groups, having a functionality of from 3.5 to 4.3, a hydroxyl number of from 350 to 650 and a viscosity of from 500 to 2,500 mPa.multidot.s at 23.degree. C. and prepared by anionic polymerization of 1,2-propylene oxide or ethylene oxide and 1,2-propylene oxide onto an initiator molecule mixture containing, based on the total weight,a1) from 40 to 80% by weight of a hexanetetrol,a2) from 1 to 30% by weight of a hexanetriol,a3) from 0 to 35% by weight of glycerol anda4) from 0 to 15% by weight of sorbitol or mannitol, or a mixture thereof,b) optionally, a low-molecular-weight chain extender and/or crosslinking agent withc) an organic, modified or unmodified polyisocyanate; in the presence ofd) a blowing agent,e) a catalyst and, optionally,f) assistants and/or additives, and novel polyoxypropylene-polyols and polyoxyethylene-polyoxypropylene-polyols which can be used for this purpose.
    • 本发明涉及通过使a)具有仲羟基的聚氧丙烯或聚氧乙烯 - 聚氧丙烯 - 多元醇,具有官能度的官能度的方法,通过多异氰酸酯加聚方法制备含有氨基甲酸酯基团或聚氨酯和异氰脲酸酯基团的硬质泡沫的方法, 3.5至4.3,羟值为350至650,在23℃下的粘度为500至2500mPax,并通过将1,2-环氧丙烷或环氧乙烷和1,2-环氧丙烷阴离子聚合制备到 包含基于总重量的起始分子混合物,a1)为40至80重量%的己烷四醇,a2)1至30重量%的己烷三醇,a3)0至35重量%的甘油和 a4)0至15重量%的山梨糖醇或甘露醇或其混合物,b)任选的低分子量增链剂和/或交联剂,c)有机,改性或未改性的多异氰酸酯; 在d)发泡剂的存在下,e)可以用于此目的的催化剂和任选的f)助剂和/或添加剂,以及新的聚氧丙烯 - 多元醇和聚氧乙烯 - 聚氧丙烯 - 多元醇。