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    • 2. 发明授权
    • Solution of a polyurethane in a polyol and a process for using such a
solution in the production of polyurethane plastics
    • 聚氨酯在多元醇中的溶液以及在制备聚氨酯塑料中使用这种溶液的方法
    • US4371630A
    • 1983-02-01
    • US236949
    • 1981-02-23
    • Klaus KonigHans-Walter IllgerPeter SeifertHolger Meyborg
    • Klaus KonigHans-Walter IllgerPeter SeifertHolger Meyborg
    • C08G18/00C08G18/08C08G18/65C08G18/66C08L75/04C08G18/14C08G18/32C08G18/42
    • C08G18/0857C08L75/04Y10S521/914
    • A solution of a polyurethane in a polyol is made from (a) the reaction product of a polyisocyanate and a diprimary diol, and (b) a polyether in which the reaction product constitutes from 3 to 60 wt. % of the solution. Suitable diprimary diols have a molecular weight of from 90 to 800 and a structure at both hydroxyl groups corresponding to the general formula: ##STR1## in which R.sub.1 represents chlorine, an alkyl, cycloalkyl, aralkyl or aryl radical having from 1 to 10 carbon atoms, which carbon atoms may be substituted or interrupted by chlorine, ester groups, ether groups, amide groups, urethane groups or nitrile groups, andR.sub.2 represents hydrogen or a radical within the definition of R.sub.1.Polyethers which may be employed have at least two hydroxyl groups (at least 80% of which are secondary hydroxyl groups) and an average molecular weight of from 500 to 12,000. The disclosed solutions are particularly useful in the production of flexible polyurethane plastics which are suitable for flamecoating and high frequency bonding.
    • 聚氨酯在多元醇中的溶液由(a)多异氰酸酯与二元二元醇的反应产物和(b)反应产物构成3〜60重量%的聚醚制成。 %的解决方案。 合适的二原子二醇的分子量为90至800,并且在两个羟基上的结构对应于以下通式:其中R 1表示氯,具有1至10个碳原子的烷基,环烷基,芳烷基或芳基 ,哪些碳原子可以被氯,酯基,醚基,酰胺基,氨基甲酸酯基或腈基取代或中断,并且R 2表示氢或R 1定义中的基团。 可以使用的聚醚具有至少两个羟基(其中至少80%是仲羟基),平均分子量为500至12,000。 所公开的解决方案在生产柔性聚氨酯塑料时特别有用,这些塑料适合于熔融和高频粘合。
    • 4. 发明授权
    • Polyamine crosslinking agent formulation and its preparation
    • 多胺交联剂配方及其制备
    • US5705594A
    • 1998-01-06
    • US767564
    • 1996-12-16
    • Klaus KonigOtto NeunerWerner Rasshofer
    • Klaus KonigOtto NeunerWerner Rasshofer
    • C07D251/34C08G59/50C08J3/24C08K5/3492C08L63/00C08L73/02C08L79/02C08G18/08C08G18/10
    • C08G59/5086C07D251/34
    • Liquid polyamine crosslinking agent formulations based on trimerized toluylene 2,4- and/or 2,6-diisocyanate, with formation of an isocyanurate structure and hydrolysis of the isocyanate groups to amine groups, are described. The novel crosslinking agent formulations have a content of 40 to 80% of the total weight of the solids content of the crosslinking agent formulation of 1,3,5-tris-(3-amino-4-methyl-phenyl,2-methyl-3-aminophenyl) isocyanurate (I) which is not further condensed, and a content of not more than 1.0% of the total weight of the crosslinking agent formulations of toluylene-2,4- and/or -2,6-diamine (III). For the preparation, toluylene diisocyanate is trimerized, to form the isocyanurate structure, until 10 to 25% of the NCO groups have been reacted. The toluylene diisocyanate which has not undergone condensation is then distilled off, the bottom product formed by this operation is taken up directly in a solvent A and the 30 to 70% strength by weight solution formed by this procedure is metered into a hydrolysis in water/N,N-dialkyl-carboxylic acid amide in the presence of a catalytic amount of a basic catalyst. After the hydrolysis, the crosslinking agent formulations are brought to a solids content of 35 to 60% of the total weight of the formulation by distilling off a portion of the solvents and adding a solvent B.
    • 描述了基于三聚甲苯2,4-和/或2,6-二异氰酸酯的液态多胺交联剂制剂,其形成异氰脲酸酯结构和将异氰酸酯基团水解为胺基。 新型交联剂配方的含量为交联剂配方的1,3,5-三(3-氨基-4-甲基 - 苯基,2-甲基 - 苯基) - 苯胺的固体含量的总重量的40-80% 3-氨基苯基)异氰脲酸酯(I),其不再进一步缩合,并且不大于甲苯-2,4-和/或-2,6-二胺(III)的交联剂配方的总重量的1.0重量% )。 为了制备,将甲苯二异氰酸酯进行三聚,形成异氰脲酸酯结构,直到10〜25%的NCO基团都已反应。 然后蒸馏除去未进行冷凝的甲苯二异氰酸酯,将通过该操作形成的底部产物直接溶于溶剂A中,并将通过该方法形成的30-70重量%的重量浓度的溶液计量加入水/ N,N-二烷基 - 羧酸酰胺在催化量的碱性催化剂存在下反应。 水解后,通过蒸馏掉一部分溶剂并加入溶剂B使交联剂配方的固体含量达到制剂总重量的35至60%。