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    • 73. 发明授权
    • Continuous process for thermal splitting of carbamic acid esters
    • 氨基甲酸酯热分解的连续工艺
    • US4692550A
    • 1987-09-08
    • US485347
    • 1983-04-15
    • Theodor EngbertGunter HammenHartmut KnofelKlaus Konig
    • Theodor EngbertGunter HammenHartmut KnofelKlaus Konig
    • C07C263/04C07C27/00C07C31/02C07C31/125C07C67/00C07C241/00C07C265/00C07C265/04C07C265/12C07C118/00
    • C07C263/04
    • N-monosubstituted carbamic acid esters are thermally split on a continuous basis in a tube reactor. The carbamic acid ester which is flowed down or passed over the inner wall of a tube reactor is thermally split at a temperature of from 150.degree. to 450.degree. C. and under a pressure of from 0.001 to 20 bar into at least two fractions. One fraction is predominantly isocyanate and a second fraction is predominantly hydroxyl compound. These fractions may be separated by removing one as a gaseous fraction formed under the splitting conditions from the head of the reactor and collecting the second fraction as a liquid which accumulates at the base of the reactor. If both fractions are gaseous under the splitting conditions, they are both removed from the head of the reactor and subsequently separated by fractionating columns for example. This process is particularly advantageous in that isocyanate and hydroxyl fractions are obtained in high yield without using a solvent.
    • N-单取代氨基甲酸酯在管式反应器中以连续的方式热分解。 流过或流过管式反应器内壁的氨基甲酸酯在150℃至450℃的温度和0.001至20巴的压力下热分解成至少两个馏分。 一个部分主要是异氰酸酯,第二部分主要是羟基化合物。 这些级分可以通过除去在分离条件下从反应器的头部形成的气态馏分来分离,并将第二馏分作为积聚在反应器底部的液体进行收集。 如果两个馏分在分解条件下都是气态的,则它们都从反应器的头部移出,并随后通过分馏塔例如分离。 该方法特别有利的是在不使用溶剂的情况下以高产率获得异氰酸酯和羟基部分。
    • 76. 发明授权
    • Solutions of oligo-urethane ethers in polyether polyols and their use in
a process for the production of polyurethane foams
    • 聚醚多元醇中的寡聚氨酯醚的溶液及其在生产聚氨酯泡沫体的方法中的应用
    • US4427798A
    • 1984-01-24
    • US356877
    • 1982-03-10
    • Klaus KonigGernot BeckerPeter Seifert
    • Klaus KonigGernot BeckerPeter Seifert
    • C08L71/00C08G18/00C08G18/10C08G18/38C08G18/48C08G18/50C08G18/66C08J3/12C08L71/02C09J5/00C09J5/08C08G18/14
    • C08G18/5045C08G18/10C08G18/3831C08G18/4804C08G18/6666
    • The invention relates to solutions of(A) from 3 to 60% by weight, based on the combined ether-polyol content, of separately prepared oligo-urethane ethers containing terminal OH.sup.- groups in the form of reaction products of(a) diisocyanates with(b) dialcohols having an average molecular weight of from 200 to 800, the stoichiometric ratio of (a) to (b) amounting to various values based on the average molecular weight of the dialcohols, in(B) polyether polyols containing at least 2 hydroxyl groups and having an average molecular weight of from 1000 to 12,000 and to their use in a proess for the production of polyurethane foams capable of being effectively flame-laminated and (high-frequency) welded without any adverse effect upon their other properties. The process for producing flame-laminatable and high-frequency-weldable flexible polyurethane foams is characterized by the reaction of(i) polyisocyanates with(ii) relatively high molecular weight compounds containing at least 2 hydroxyl groups,(iii) optionally other relatively high molecular weight and/or low molecular weight compounds containing isocyanate-reactive hydrogen atoms and water,(iv) optionally in the presence of other blowing agents, catalysts, foam stabilizers and other additives,such solutions described above being exclusively or partly used as the relatively high molecular weight compounds which contain hydroxyl groups.
    • 本发明涉及(A)基于所组合的醚 - 多元醇含量的(A)3至60重量%的分别制备的(a)二异氰酸酯与(a)二异氰酸酯的反应产物形式的末端OH-基团的低聚 - (b)平均分子量为200至800的二醇,(a)至(b)的化学计量比为基于二醇的平均分子量而计算的各种值,(B)含至少2个 羟基,其平均分子量为1000至12,000,并且用于生产能够有效地进行火焰层压和(高频)焊接的聚氨酯泡沫体,而对其它性能没有任何不利影响。 用于生产火焰层压和高频可焊性软质聚氨酯泡沫的方法的特征在于(i)多异氰酸酯与(ii)含有至少2个羟基的相对高分子量化合物的反应,(iii)任选其它相对高分子量 含有异氰酸酯反应性氢原子和水的重量和/或低分子量化合物,(iv)任选地在其它发泡剂,催化剂,泡沫稳定剂和其它添加剂的存在下,上述这样的溶液仅仅或​​部分用作相对高的 含有羟基的分子量化合物。
    • 78. 发明授权
    • Process for the preparation of carbonic acid aryl esters of
polyester-diols lengthened via carbonate groups and their use for the
preparation of polyester-diol bis-diphenol carbonates and
polyester/polycarbonates
    • 通过碳酸酯基延长的聚酯二醇的碳酸芳酯的制备方法及其用于制备聚酯 - 二醇双二酚碳酸酯和聚酯/聚碳酸酯的用途
    • US4297455A
    • 1981-10-27
    • US910986
    • 1978-05-30
    • Christian LindnerCarlhans SulingHerbert BartlManfred SchreckenbergDieter FreitagKlaus Konig
    • Christian LindnerCarlhans SulingHerbert BartlManfred SchreckenbergDieter FreitagKlaus Konig
    • C08G63/64C08G63/00C08G63/76
    • C08G63/64
    • The present invention relates to a process for the preparation of bis-carbonic acid aryl esters of polyester-diols, lengthened via --OCOO-- groups, characterized in that polyester-diols with molecular weights Mn (number-average) of over 250, preferably over 600, are heated with carbonic acid bis-aryl esters at temperatures between about 100.degree. C. and 200.degree. C., preferably between about 110.degree. C. and 180.degree. C., in vacuo below about 35 mm Hg, preferably between about 25 and 1 mm Hg, in the presence of catalysts, less than one mol of carbonic acid bis-aryl ester being employed per OH group of the polyester-diol and the hydroxyaryl compounds formed being distilled off.The invention further relates to the bis-carbonic acid aryl esters of polyester-diols lengthened via --OCOO-- groups obtained according to the instant invention and their use for the preparation of polyester diol bis-diphenol carbonates, lengthened via carbonate groups, characterized in that polyester-diol bis-aryl carbonates are reacted with a diphenol at a temperature of from about 100.degree. to about 200.degree. C. in vacuo below about 35 mm Hg in the presence of a catalyst, wherein more than 1 mol of diphenol is employed per mol of carbonic acid aryl ester groups of the polyester-diol bis-aryl carbonate, lengthened via carbonate groups, and the resulting hydroxyaryl compound is distilled off.The invention finally relates to the polyester-diol bis-diphenol carbonates, lengthened via carbonate groups obtained according to the instant invention and their use for the preparation of polyester/polycarbonates and the polycarbonate/polyesters so prepared.
    • 本发明涉及通过-OCOO-基团延长的聚酯二醇的双碳酸芳基酯的制备方法,其特征在于分子量Mn(数均分子)超过250的聚酯二醇优选超过 600,在约100℃至200℃之间,优选约110℃至180℃之间的温度下,用碳酸双芳基酯加热,真空度低于约35mmHg,优选约25mm 和1mm Hg,在催化剂的存在下,每聚酯二醇的OH基和所形成的羟基芳基化合物使用少于1摩尔的碳酸双芳基酯。 本发明还涉及通过根据本发明获得的-OCOO-基团延长的聚酯二醇的双碳酸芳基酯及其用于制备通过碳酸酯基团延长的聚酯二醇双 - 二酚酚酸酯的用途,其特征在于 在催化剂存在下,聚酯 - 二醇双芳基碳酸酯与二酚在约100至约200℃的温度下在真空下在约35mm Hg下真空反应,其中每次使用多于1mol的二酚 将通过碳酸酯基延长的聚酯 - 二醇双芳基碳酸酯的碳酸芳基酯基和所得羟基芳基化合物蒸馏出。 本发明最终涉及通过根据本发明获得的碳酸酯基团延长的聚酯 - 二醇双 - 二酚碳酸酯及其制备聚酯/聚碳酸酯和如此制备的聚碳酸酯/聚酯的用途。