利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

18 条记录 (耗时 0.016 秒)

    Chemical process
    4.
    发明授权
    Chemical process 失效
    化学工艺

    公开(公告)号：US5278274A

    公开(公告)日：1994-01-11

    申请号：US774768

    申请日：1991-10-10

    申请人： Gabriel Verhelst ,  Louis Muller ,  Alain Parfondry

    发明人： Gabriel Verhelst ,  Louis Muller ,  Alain Parfondry

    IPC分类号： C08G18/08 ,  C08G18/10 ,  C08G18/76 ,  C08G18/00

    CPC分类号： C08G18/0895 ,  C08G18/10 ,  C08G18/7664 ,  C08G2101/0008 ,  C08G2101/005 ,  C08G2101/0083

    摘要： A continuous process for the preparation of an isocyanate-terminated prepolymer having an NCO content in the range from 2 to 15% by weight, said process comprising the steps of:(A) continuously delivering to a reaction zone an organic polyisocyanate composition and an isocyanate reactive compound having an average molecular weight of at least 1000 the relative proportions of isocyanate composition and isocyanate reactive compound being appropriate for the formation of a prepolymer having an NCO content in the indicated range;(B) allowing the isocyanate composition and the isocyanate reactive compound to react in the reaction zone to form an isocyanate-terminated prepolymer, and(C) continuously removing the prepolymer from the reaction zone.

    摘要翻译： 一种用于制备NCO含量在2至15重量％范围内的异氰酸酯封端的预聚物的连续方法，所述方法包括以下步骤：（A）连续地向反应区输送有机多异氰酸酯组合物和异氰酸酯 平均分子量为1000以上的反应性化合物，其特征在于，所述异氰酸酯组合物和异氰酸酯反应性化合物的相对比例适合于形成指定范围内NCO含量的预聚物; （B）使异氰酸酯组合物和异氰酸酯反应性化合物在反应区中反应形成异氰酸酯封端的预聚物，（C）从反应区连续除去预聚物。

    Manufacture of polyurethane foam
    8.
    发明授权
    Manufacture of polyurethane foam 失效
    聚氨酯泡沫的制造

    公开(公告)号：US4916168A

    公开(公告)日：1990-04-10

    申请号：US247453

    申请日：1988-09-21

    申请人： Tu Pham ,  Louis Muller

    发明人： Tu Pham ,  Louis Muller

    IPC分类号： C08G18/76 ,  C08G18/78 ,  C08G18/79

    CPC分类号： C08G18/7664 ,  C08G18/7806 ,  C08G18/79 ,  C08G2101/0008 ,  C08G2101/0041 ,  C08G2101/0075 ,  C08G2101/0083

    摘要： Flexible polyurethane foam based on methylene diphenyl isocyanates and isocyanate-reactive compounds selected from polyols and polyamines, for which the ratio of the density expressed in kg/m.sup.3 to the compression hardness at 40% compression, expressed in kPa, has a value of at least 20.Such foams may be obtained through a process which comprises reacting methylene diphenyl isocyanates with one or more isocyanate-reactive compounds selected from polyols and polyamines with a functionality of 2-4 and an average equivalent weight ranging from 750-5000 and from 0 to 5 parts by weight of water per 100 parts of polyols and/or polyamine, optionally together with additives conventional in the art, and optionally together with blowing agents other than water, whereas the isocyanate index ranges from 10 to 60.

    Process to enhance polyurethane foam performance
    10.
    发明授权
    Process to enhance polyurethane foam performance 有权
    增强聚氨酯泡沫性能的工艺

    公开(公告)号：US06387972B1

    公开(公告)日：2002-05-14

    申请号：US09784546

    申请日：2001-02-15

    申请人： Hassan El Ghobary ,  Louis Muller

    发明人： Hassan El Ghobary ,  Louis Muller

    IPC分类号： C08J900

    CPC分类号： C08G18/1825 ,  C08G18/089 ,  C08G18/4072 ,  C08G18/7664 ,  C08G2101/0008 ,  C08G2101/005 ,  C08G2101/0083

    摘要： An improved process to enhance polyurethane foam performance is described. Polyurethane foam is prepared by reactions between a polyisocyanate and a polyfunctional isocyanate-reactive component wherein said reactions are conducted in the presence of catalysts composed of (a) a specific reactive tertiary amine compound selected from the group consisting of bis(dimethylaminopropyl)amino-2-propanol, bis(dimethylaminopropyl)amine, dimethylaminopropyldipropanolamine, bis(dimethylamino)-2-propanol, N,N,N′-trimethyl-N′-hydroxyethyl-bis(aminoethyl)ether and mixtures thereof; and (b) at least one carboxylic acid salt of the specific reactive tertiary amine compound selected from the group consisting of hydroxy-carboxylic acid salts and halo-carboxylic acid salts.

    摘要翻译： 描述了改进聚氨酯泡沫性能的改进方法。 通过多异氰酸酯和多官能异氰酸酯反应性成分之间的反应制备聚氨酯泡沫，其中所述反应在催化剂存在下进行，所述催化剂由（a）选自二（二甲基氨基丙基）氨基-2 - 丙醇，双（二甲基氨基丙基）胺，二甲基氨基丙基二丙醇胺，双（二甲基氨基）-2-丙醇，N，N，N'-三甲基-N'-羟乙基 - 双（氨基乙基）醚及其混合物; 和（b）至少一种选自羟基羧酸盐和卤代羧酸盐的比活性叔胺化合物的羧酸盐。