公开(公告)号：US4698410A

公开(公告)日：1987-10-06

申请号：US878632

申请日：1986-06-26

申请人： Wolfgang Straehle ,  Matthias Marx ,  Uwe Schuett

发明人： Wolfgang Straehle ,  Matthias Marx ,  Uwe Schuett

IPC分类号： C08G18/38 ,  C08G18/40 ,  C08G18/64

CPC分类号： C08G18/3829 ,  C08G18/4081 ,  C08G18/6415

摘要： 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.

摘要翻译： 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

公开(公告)号：US4383050A

公开(公告)日：1983-05-10

申请号：US318754

申请日：1981-11-06

申请人： Dietmar Nissen ,  Hans U. Schmidt ,  Wolfgang Straehle ,  Uwe Schuett ,  Matthias Marx

发明人： Dietmar Nissen ,  Hans U. Schmidt ,  Wolfgang Straehle ,  Uwe Schuett ,  Matthias Marx

IPC分类号： C08G18/36 ,  C08G18/40 ,  C08G18/48 ,  C08G18/66 ,  C08G18/14

CPC分类号： C08G18/487 ,  C08G18/36 ,  C08G18/4018 ,  C08G18/4891 ,  C08G18/6629 ,  C08G2101/0008 ,  C08G2101/0058 ,  C08G2101/0066 ,  C08G2101/0083 ,  Y10S521/904

摘要： Low temperature flexible polyurethane elastomers are prepared by reacting organic polyisocyanates with polyester polyols which have glass transition temperatures of -10.degree. to -80.degree. C. and incorporating therein alkoxylated esters of fatty acids and/or alkoxylated terpene alcohols.

摘要翻译： 通过使有机多异氰酸酯与玻璃化转变温度为-10℃至-80℃的聚酯多元醇反应并加入脂肪酸和/或烷氧基化萜烯醇的烷氧基化酯来制备低温柔性聚氨酯弹性体。