-
公开(公告)号：US5502147A
公开(公告)日：1996-03-26
申请号：US171282
申请日：1993-12-21
申请人： Neil H. Nodelman , David D. Steppan , Albert Magnotta , Robert M. Loring , Richard E. Keegan , William E. Slack
发明人： Neil H. Nodelman , David D. Steppan , Albert Magnotta , Robert M. Loring , Richard E. Keegan , William E. Slack
CPC分类号： C08G18/6505 , C08G18/78 , C08G18/79 , C08G2120/00
摘要： The present invention is directed to polyurethane moldings produced via the RIM process. These polyurethane moldings have excellent reactivity, demold properties (at a 30 s demold), and good elongation and tear strength, and comprise the reaction product of an aliphatic polyisocyanate having a viscosity of less than about 20,000 mPa.multidot.s at 25.degree. C. and a NCO functionality of 2.3 to 4.0 with an isocyanatereactive component comprising b1) a relatively high molecular weight organic compound containing at least one of the groups selected from the group consisting of hydroxy groups and amine groups; and b2) a low molecular weight chain extender selected from the group consisting of diols, triols, primary amines, secondary amines, aminoalcohols, and mixtures thereof; in the presence of a catalyst. The OH:NH ratio of the chain extender is from 1:1 to 25:1.
摘要翻译： 本发明涉及通过RIM工艺生产的聚氨酯模制品。 这些聚氨酯模制品具有优异的反应性，脱模性（30秒脱模）和良好的伸长率和撕裂强度，并且包括在25℃下具有小于约20,000mPax的粘度的脂族多异氰酸酯与NCO的反应产物 具有异氰酸酯反应性组分的2.3至4.0的官能度包含：b1）含有至少一种选自羟基和胺基的基团的相对高分子量的有机化合物; 和b2）选自二醇，三醇，伯胺，仲胺，氨基醇及其混合物的低分子量增链剂; 在催化剂存在下。 扩链剂的OH:NH比为1:1至25:1。
-
公开(公告)号：US5141967A
公开(公告)日：1992-08-25
申请号：US701945
申请日：1991-05-17
申请人： Robson Mafoti , Majid Daneshvar , Robert M. Loring
发明人： Robson Mafoti , Majid Daneshvar , Robert M. Loring
CPC分类号： C08G18/7664 , C08G18/10 , C08G2120/00
摘要： The present invention relates to a process for preparing polyurea-polyurethane elastomers comprising reacting in a closed mold, in accordance with the reaction injection molding technique at an isocyanate index of about 95 to about 110, an isocyanate prepolymer having an isocyanate content of about 5 wt. % to 10 wt. % and a molecular weight range of about 1000 to 4000 with a diamine chain extender having no isocyanate-reactive groups other than amino groups in the substantial absence of compounds having isocyanate-reactive groups other than amino groups. The present invention further relates to the polyureapolyurethane elastomers produced by the process of this invention.
摘要翻译： 本发明涉及一种制备聚脲 - 聚氨酯弹性体的方法，其包括在封闭模具中根据异氰酸酯指数为约95至约110的反应注射成型技术，异氰酸酯含量为约5重量％的异氰酸酯预聚物 。 ％〜10重量％ ％，分子量范围为约1000-4000，二胺扩链剂在不存在除氨基以外的异氰酸酯反应性基团的化合物的情况下，不具有氨基以外的异氰酸酯反应性基团。 本发明还涉及通过本发明的方法生产的聚脲聚氨酯弹性体。
-
公开(公告)号：US4131662A
公开(公告)日：1978-12-26
申请号：US866449
申请日：1978-01-03
CPC分类号： B29C33/60 , B29K2075/00 , Y10S264/14 , Y10S264/77
摘要： The instant invention is directed to novel mold release agents for polyurethane resins and to the use thereof, particularly in the closed mold forming of polyurethane foams. The mold release agents disclosed herein are applied to the surface of the mold prior to molding and broadly comprise talc dispersed in an emulsion of water and an organic solvent.
摘要翻译： 本发明涉及用于聚氨酯树脂的新型脱模剂及其用途，特别是在聚氨酯泡沫的封闭模具成型中。 本文公开的脱模剂在模制之前施加到模具的表面，并且广泛地包括分散在水和有机溶剂的乳液中的滑石。
-
公开(公告)号：US5137788A
公开(公告)日：1992-08-11
申请号：US410211
申请日：1989-09-21
CPC分类号： C08G18/482 , C08G18/6511 , C08G18/6674 , C08G2130/00 , Y10T428/31551 , Y10T428/31678
摘要： Homogeneous storable mixtures containing small quantities of a potassium halide, having a high mixed hydroxyl number or mixed hydroxyl/amine number and an average functionality of at least 2.0 are made by mixing (a) a polyoxyalkylene polyol and/or polyolamine and/or polyamine based on an alkyloxirane having a molecular weight of from 400 to 12,000 and (b) a low molecular weight polyol which is not completely miscible with (a) wherein these mixtures are reacted with a prepolymer or a polyisocyanate to produce shrink stable thermal break urethanes having good adhesion to substrate properties and wherein the use of such mixtures increases processing flexibility without detrimentally affecting the physical properties of the thermal break urethanes produced.
摘要翻译： 通过混合（a）聚氧化烯多元醇和/或多元胺和/或多胺基，制备含有少量卤化钾，具有高混合羟基数或混合羟基/胺数，平均官能度至少为2.0的均匀的可储存混合物 在分子量为400至12,000的烷基环氧乙烷上和（b）与（a）不完全混溶的低分子量多元醇，其中这些混合物与预聚物或多异氰酸酯反应以产生具有良好的收缩稳定的热断裂氨基甲酸酯 与基材性质的粘合性，并且其中使用这种混合物增加了加工柔性，而不会有害地影响所生产的热断裂聚氨酯的物理性能。
-
5.发明授权
公开(公告)号：US4897428A
公开(公告)日：1990-01-30
申请号：US239366
申请日：1988-08-31
CPC分类号： C08K5/17 , C08G18/3275 , C08G18/3281 , C08K5/098 , C08G2120/00 , C08G2125/00
摘要： The present invention is directed to an internal mold release agent, a composition containing the mold release agent, and a method of using such agent. The mold release broadly comprises zinc oleate or zinc laurate and a specific fatty amine derivative.
摘要翻译： 本发明涉及一种内部脱模剂，含有脱模剂的组合物以及使用该脱模剂的方法。 脱模剂广泛地包括油酸锌或月桂酸锌和特定的脂肪胺衍生物。
-
6.发明授权Process for the production of microcellular elastomeric moldings and the resultant products 失效用于生产微孔弹性体模制品和所得产品的方法
公开(公告)号：US4288564A
公开(公告)日：1981-09-08
申请号：US52877
申请日：1979-06-28
CPC分类号： B29C44/348 , B29C67/246 , C08G18/08 , C08G18/6529 , C08K3/0008 , B29K2075/00 , B29K2105/16 , C08G2101/0066 , C08G2120/00 , Y10S264/05 , Y10S264/13 , Y10S264/83
摘要： The instant invention is directed to a process for the production of microcellular elastomeric moldings comprising:(A) introducing a reaction mixture into a closed mold, said reaction mixture comprising:(i) an organic polyisocyanate,(ii) a hydroxyl group containing compound having a molecular weight of from 1800 to 12,000,(iii) a catalyst for the reaction between hydroxyl groups and isocyanate groups,(iv) an active aromatic diamine having at least one alkyl substituent in the orthoposition to a first amino group and two alkyl substituents in ortho-position to a second group, and(v) air and/or nitrogen dissolved under pressure in any one or more of Components (i), (ii), (iii) or (iv),(B) allowing said reaction mixture to react in said mold and(C) removing the resultant product from said mold, the improvement wherein in any of Components (i), (ii), (iii) or (iv) which does contain said air and/or nitrogen dissolved therein there is included an inorganic, finely divided, nitrogen adsorbing agent in an amount sufficient to accelerate the transition of the air and/or nitrogen from the dissolved state to the dispersed state upon release of the pressure (i.e., as the liquid reacting mixture flows into the mold). It is this dispersed state which allows for adequate blowing during the process.
摘要翻译： 本发明涉及一种用于生产微孔弹性体模制品的方法，其包括：（A）将反应混合物引入封闭的模具中，所述反应混合物包含：（i）有机多异氰酸酯，（ii）含羟基的化合物，其具有 分子量为1800至12,000，（iii）用于羟基和异氰酸酯基团之间的反应的催化剂，（iv）活性芳族二胺，其在至少一个与第一个氨基取代的烷基取代基和两个烷基取代基 （v）在组分（i），（ii），（iii）或（iv），（B）中的任何一种或多种中压力溶解的空气和/或氮气，允许所述反应混合物 在所述模具中反应和（C）从所述模具中除去所得产物的改进，其中在其中含有溶解有所述空气和/或氮的组分（i），（ii），（iii）或（iv） 包括无机，细分的氮气 吸附剂的量足以在释放压力（即，当液体反应混合物流入模具中）时将空气和/或氮从溶解状态转变为分散状态。 这是分散状态，允许在该过程中充分吹制。
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.012 秒)