Process for the production of elastic, optionally cellular, polyurethane
ureas
    3.
    发明授权
    Process for the production of elastic, optionally cellular, polyurethane ureas 失效
    用于生产弹性,任选细胞的聚氨酯脲的方法

    公开(公告)号:US4294934A

    公开(公告)日:1981-10-13

    申请号:US164752

    申请日:1980-06-30

    摘要: The instant invention is directed to a process for the production of polyurethane urea elastomers having a gross density of more than 200 kg/m.sup.3 comprising: casting a reaction mixture of(A) an isocyanate prepolymer produced from(a) 1 mole of a compound containing at least 2 Zerewitinoff-active hydrogen atoms and having a molecular weight of from 400 to 10,000 and(b) 2 to 10 moles of diisocyanatodiphenylmethane,(B) an aromatic diamine, and(C) 0 to 50 mole percent, based on component (B), of a polyol containing primary hydroxyl groups and having a molecular weight of from 62 to 6000, the equivalent ratio between component (A) and components (B) + (C) amounting to between 0.9:1 and 1.3:1,into a mold, hardening the reaction mixture in the mold and subsequently removing it from the mold, the improvement wherein said isocyanate prepolymer (A) has been produced using an isomer mixture comprising:from 15 to 80 mole percent of 2,4'-diisocyanatodiphenylmethane,from 20 to 85 mole percent of 4,4'-diisocyanatodiphenylmethane, andfrom 0 to 20 mole percent of 2,2'-diisocyanatodiphenylmethane.

    摘要翻译: 本发明涉及生产总密度大于200kg / m 3的聚氨酯脲弹性体的方法,包括:浇铸(A)异氰酸酯预聚物的反应混合物,该异氰酸酯预聚物由(a)1摩尔含有 至少2个Zerewitinoff活性氢原子,分子量为400至10,000,和(b)2至10摩尔二异氰酸二苯基甲烷,(B)芳族二胺和(C)0至50摩尔%,基于组分( B),含有伯羟基并且分子量为62至6000的多元醇,组分(A)和组分(B)+(C)之间的当量比为0.9:1至1.3:1,转化为 模具,使模具中的反应混合物硬化,随后将其从模具中除去,改进之处在于所述异氰酸酯预聚物(A)已经使用异构体混合物制备,所述异构体混合物包含:15至80摩尔%的2,4'-二异氰酸根合二苯基甲烷, 20至85摩尔%o f 4,4'-二异氰酸二苯基甲烷和0至20摩尔%的2,2'-二异氰酸二苯基甲烷。

    Process for the production of molded articles having integral skin
    6.
    发明授权
    Process for the production of molded articles having integral skin 失效
    用于生产具有整体皮肤的模制品的方法

    公开(公告)号:US4576970A

    公开(公告)日:1986-03-18

    申请号:US703844

    申请日:1985-02-21

    摘要: The present invention is directed to a process for the production of a molded article having a compact surface layer and a gross density above 900 kg/m.sup.3 via the reaction injection molding technique, comprising introducing a reaction mixture into a closed mold, said reaction mixture comprising:(a) a polyisocyanate component consisting of at least one polyisocyanate in which all the isocyanate groups are aromatically bound,(b) compounds having molecular weights of from 400 to 12,000 and having at least two isocyanate reactive hydrogen atoms,(c) water, in a quantity of at least 0.15 mol per mol of isocyanate groups of component (a), and(d) optionally compounds having molecular weights of from 60 to 399 and having at least two isocyanate reactive hydrogen atoms,wherein the isocyanate index, based on all the reactants taking part in the reaction is from 70 to 125, and wherein a pressure of above 40 bar is maintained in the reaction mixture during the reaction so that the carbon dioxide formed in the course of the reaction remains completely or predominantly in solution in the reaction mixture and in the molded article produced.

    摘要翻译: 本发明涉及通过反应注射成型技术生产具有紧密表面层和总密度高于900kg / m 3的模塑制品的方法,包括将反应混合物引入封闭模具中,所述反应混合物包含 (a)由至少一种多异氰酸酯组成的多异氰酸酯组分,其中所有异氰酸酯基团都被芳族结合,(b)分子量为400至12,000并具有至少两个异氰酸酯反应性氢原子的化合物,(c)水, 每摩尔组分(a)的异氰酸酯基团至少为0.15摩尔的量,和(d)任选分子量为60至399的具有至少两个异氰酸酯反应性氢原子的化合物,其中异氰酸酯指数基于 参与反应的所有反应物均为70〜125,在反应中反应混合物中保持40巴以上的压力,使二氧化碳 在反应过程中形成的反应完全或主要存在于反应混合物和所制备的模制品中的溶液中。

    Process for the production of pneumatic tires having particularly high
dynamic strength
    7.
    发明授权
    Process for the production of pneumatic tires having particularly high dynamic strength 失效
    用于生产具有特别高动态强度的充气轮胎的方法

    公开(公告)号:US4309378A

    公开(公告)日:1982-01-05

    申请号:US178230

    申请日:1980-08-14

    摘要: The instant invention is directed to a process for the production of pneumatic tires having particularly high dynamic strength and low plastic deformability comprising casting or centrifugally casting the following liquid reaction system whose rapid hardening requires temperatures of at most 85.degree. C.:(A) prepolymers or semiprepolymers of specified isocyanates and a polyol or polyol mixture having a hydroxyl functionality of 2.0 to 2.2 and an average molecular weight of from 1,000 to 3,000, wherein the molar ratio of polyol to diisocyanate is from 1:1.5 to 1:4.0,(B) specific aromatic diamine chain extenders,(C) catalysts, and(D) auxiliaries.

    摘要翻译: 本发明涉及一种用于生产具有特别高的动态强度和低塑性变形性的充气轮胎的方法,包括铸造或离心铸造以下液体反应体系,其快速硬化需要至多85℃的温度:(A)预聚物 或指定异氰酸酯的半反式聚合物和羟基官能度为2.0至2.2,平均分子量为1,000至3,000的多元醇或多元醇混合物,其中多元醇与二异氰酸酯的摩尔比为1:1.5至1:4。

    Adhesive compositions
    8.
    发明授权
    Adhesive compositions 有权
    粘合剂组合物

    公开(公告)号:US06506280B2

    公开(公告)日:2003-01-14

    申请号:US09803502

    申请日:2001-03-09

    IPC分类号: C09J17504

    摘要: The present invention relates to an aqueous dispersion containing an isocyanate-reactive polymer and a polyisocyanate, wherein the polyisocyanate has a melting or softening point of >30° C. and is in the form of a finely divided powder having a mean particle diameter of less than 100 &mgr;m. The present invention also relates to an adhesive composition containing this dispersion and to a process for bonding substrates with this composition.

    摘要翻译: 本发明涉及含有异氰酸酯反应性聚合物和多异氰酸酯的水性分散体,其中多异氰酸酯的熔点或软化点为> 30℃,并且为平均粒径较小的细粉末形式 超过100个妈妈。 本发明还涉及含有该分散体的粘合剂组合物以及用该组合物粘结基材的方法。