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    • 5. 发明授权
    • Thermoplastic polyurethanes for processing in extruders and/or on
calenders
    • 用于在挤出机和/或压延机中加工的热塑性聚氨酯
    • US4371684A
    • 1983-02-01
    • US271308
    • 1981-05-29
    • Bernd QuiringGeorg NiederdellmannWilhelm GoyertHans Wagner
    • Bernd QuiringGeorg NiederdellmannWilhelm GoyertHans Wagner
    • C08G18/10C08G18/61C08G18/65C08G18/42
    • C08G18/6511C08G18/10C08G18/61
    • The invention is directed to a process extruding or melt roll calendering thermoplastic polyurethanes wherein the polyurethanes used are synthesized from p1 (a) one or more relatively high molecular weight substantially linear polyols having molecular weights in the range from 400 to 10,000(b) diphenyl methane and/or hexamethylene diisocyanate and(c) a mixture of 85 to 99% by weight of 1,4-butane diol and 1 to 15% by weight of at least one co-extender selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, diethylene 1,2-propane diol, 1,3-butane diol, 1,6-hexane diol, 2-ethyl-1,3-hexane diol, 2,2-dimethyl-1,3-propane diol, 1,4-bis-hydroxymethyl cyclohexane, hydroquinone-bis-hydroxyethyl ether, and mixtures thereof, the equivalent ratio of NCO groups in component (B) to the Zerewitinoff-active hydrogen atoms in components (A) and (C) being from 0.9:1 to 1.2:1 and the molar ratio of component (A) to (C) being from 1:20 to 5:1.
    • 本发明涉及一种挤出或熔融辊压延热塑性聚氨酯的方法,其中使用的聚氨酯由p1(a)一种或多种相对高分子量的基本上线性的多元醇合成,分子量范围为400至10,000(b)二苯基甲烷 和/或六亚甲基二异氰酸酯和(c)85-99重量%的1,4-丁二醇和1-15重量%的选自乙二醇,二甘醇的至少一种共扩链剂的混合物 三甘醇,二乙二醇1,2-丙二醇,1,3-丁二醇,1,6-己二醇,2-乙基-1,3-己二醇,2,2-二甲基-1,3-丙二醇, 1,4-双羟甲基环己烷,氢醌双羟乙基醚及其混合物,组分(B)中的NCO基与组分(A)和(C)中的Zerewitinoff活性氢原子的当量比为0.9 :1〜1.2:1,成分(A)与(C)的摩尔比为1:20〜5:1。
    • 10. 发明授权
    • Process for the separation of polyurethane foam hydrolysates into polyol
and diamine
    • 将聚氨酯泡沫水解物分离成多元醇和二胺的方法
    • US4282367A
    • 1981-08-04
    • US105059
    • 1979-12-19
    • Georg NiederdellmannNorbert RoemerErnst Grigat
    • Georg NiederdellmannNorbert RoemerErnst Grigat
    • C08G18/00C08G18/82C08J11/16C08G18/48C08G18/14
    • C08J11/16C08J2375/04Y02W30/705Y10S521/914
    • The instant invention is directed to a process for the separation of polyurethane hydrolysates into polyamines and polyols which can be used again for the production of polyurethanes, comprising introducing gaseous hydrogen chloride into the hydrolysate mixture which has optionally been diluted with an inert solvent, and removing the precipitated amine salt by filtration, characterized in that(a) gaseous hydrogen chloride is optionally first introduced into the hydrolysate in a quantity of from 0.02 to 0.07 mol per amine equivalent, the reaction mixture is filtered and the filter residue is discarded, then(b) from 0.20 to 0.47 mol of gaseous hydrogen chloride per mol of amine equivalents still present is introduced into the filtrate and the precipitated amine salt is filtered off, then(c) stage (b) is repeated one or more times until the amine group content in the filtrate is below 1% by weight, based on the solvent-free filtrate, and finally(d) precipitation of the amine is completed by the introduction of from 0.5 to 1.0 mol of gaseous hydrogen chloride, based on the amine equivalents remaining in the filtrate.
    • 本发明涉及将聚氨酯水解物分离成多胺和多元醇的方法,其可以再次用于生产聚氨酯,包括将气态氯化氢引入到任选用惰性溶剂稀释的水解产物混合物中,并除去 通过过滤沉淀的胺盐,其特征在于,(a)气态氯化氢任选地首先以每个胺当量为0.02至0.07mol的量引入水解产物中,将反应混合物过滤并弃去过滤残余物,然后( b)将0.20至0.47摩尔的气态氯化氢/摩尔仍存在的胺当量引入滤液中,滤出沉淀的胺盐,然后(c)重复步骤(b)一次或多次,直至胺基 基于无溶剂的滤液,滤液中的含量低于1重量%,最后(d)胺的沉淀完全 通过根据残留在滤液中的胺当量,从0.5至1.0mol的气态氯化氢引入。