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    • 5. 发明授权
    • Process for the preparation of cellular and non-cellular polyurethanes
    • 制备细胞和非细胞聚氨酯的方法
    • US4481309A
    • 1984-11-06
    • US598246
    • 1984-04-09
    • Wolfgang StraehleIngolf BuetheMatthias Marx
    • Wolfgang StraehleIngolf BuetheMatthias Marx
    • C08G18/48C08G18/14
    • C08G18/4887
    • The invention relates to a process for the preparation of cellular or non-cellular polyurethanes through the reaction of organic polyisocyanates with a polyether-polyester polyol component containing di- to tetrafunctional polyether-polyester polyols having hydroxyl numbers of from 10 to 200, which are themselves prepared by esterifying conventional di- to tetrafunctional polyether polyols with carboxylic acid anhydrides, preferably aromatic carboxylic acid anhydrides, in the presence of selected catalysts to form carboxylic acid half esters, and oxyalkylating the resulting carboxylic acid half esters with alkylene oxides in the presence of N-methylimidazole, triethylene diamine, triphenylphosphine or mixtures thereof with thiodialkylene glycol as catalysts.
    • 本发明涉及一种通过有机多异氰酸酯与聚醚 - 聚酯多元醇组分的反应来制备细胞或非细胞聚氨酯的方法,所述聚醚 - 聚酯多元醇组分含有羟基数为10至200的二 - 四官能聚醚 - 聚酯多元醇,它们本身是 通过在常规二 - 四官能聚醚多元醇与羧酸酐(优选芳族羧酸酐)的酯化反应中,在选择的催化剂存在下酯化常规二 - 四官能聚醚多元醇以形成羧酸半酯,并在N存在下,用环氧烷烷氧基化所得羧酸半酯 三甲基咪唑,三亚乙基二胺,三苯基膦或其与硫代亚烷基二醇的混合物作为催化剂。
    • 6. 发明授权
    • Process for the preparation of high-temperature-resistant dense or
cellular polyurethane elastomers
    • 制备耐高温致密或细胞聚氨酯弹性体的方法
    • US4698410A
    • 1987-10-06
    • US878632
    • 1986-06-26
    • Wolfgang StraehleMatthias MarxUwe Schuett
    • Wolfgang StraehleMatthias MarxUwe Schuett
    • C08G18/38C08G18/40C08G18/64
    • C08G18/3829C08G18/4081C08G18/6415
    • The invention relates to a process for preparing high temperature-resistant dense or cellular polyurethane elastomers by reacting the following, preferably using low-pressure processing techniques:(a) organic polyisocyanates, preferably in the form of isocyanate group-containing prepolymers and/or modified urethane group-containing organic polyisocyanates, with(b) relatively high molecular weight compounds having at least 2 reactive hydrogen atoms,(c) urea derivatives and, optionally,(d) chain extenders and/or cross-linking agents in the presence of(e) catalysts and, optionally,(f) blowing agents(g) auxiliaries and/or additiveswherein amino and/or hydroxyl group-substituted ureas and/or polyureas having molecular weights from 200 to 4000 are also used as the urea derivatives. Said ureas and/or polyureas are prepared by reacting organic diisocyanates with primary aliphatic and/or cycloaliphatic diamines and/or alkanolamines in molar ratios of from 1:1.1 to 1:2, preferably in the presence of polyester or polyether polyols as solvents or diluting agents.
    • 本发明涉及通过以下方式制备耐高温致密或细胞聚氨酯弹性体的方法,优选使用低压加工技术:(a)有机多异氰酸酯,优选为含异氰酸酯基的预聚物和/或改性的 含有氨基甲酸酯基团的有机多异氰酸酯,(b)具有至少2个反应性氢原子的相对高分子量的化合物,(c)脲衍生物和任选的(d)扩链剂和/或交联剂,在 e)催化剂和任选的(f)发泡剂(g)助剂和/或添加剂,其中分子量为200-4000的氨基和/或羟基取代的脲和/或聚脲也用作脲衍生物。 所述脲和/或聚脲通过有机二异氰酸酯与脂族和/或脂环族二胺和/或链烷醇胺的摩尔比为1:1.1至1:2的反应制备,优选在作为溶剂的聚酯或聚醚多元醇的存在下或稀释 代理商