-
1.发明授权Isocyanate prepolymers produced from toluene diisocyanate residue dissolved in toluene diisocyanate 失效由甲苯二异氰酸酯残基溶解在甲苯二异氰酸酯中产生的异氰酸酯预聚物
公开(公告)号：US5756636A
公开(公告)日：1998-05-26
申请号：US774278
申请日：1996-12-27
IPC分类号： C08G18/10 , C08G18/48 , C08G18/72 , C08G18/76 , C07C269/02 , C07C271/26
CPC分类号： C08G18/10 , C08G18/4837 , C08G18/727 , C08G18/7621
摘要： A substantially solid free isocyanate prepolymer is made by reacting an isocyanate mixture which is made up of a toluene diisocyanate residue containing monomeric toluene diisocyanate and optionally, additional monomeric toluene diisocyanate in an amount such that the total NCO content is at least 37% with a polyether polyol having an ethylene oxide content of at least 30%. The polyether polyol has a molecular weight of from about 200 to about 6,000 and a functionality of from 2 to 6. The product prepolymers are particularly useful in the production of polyurethanes.
摘要翻译： 通过使由含有单体甲苯二异氰酸酯的甲苯二异氰酸酯残基和任选的另外的单体甲苯二异氰酸酯组成的异氰酸酯混合物与总聚NCO含量至少为37％的量与聚醚反应制备基本上无固体的异氰酸酯预聚物 环氧乙烷含量至少为30％的多元醇。 聚醚多元醇具有约200至约6,000的分子量和2至6的官能度。该产品预聚物特别可用于生产聚氨酯。
-
公开(公告)号：US5565497A
公开(公告)日：1996-10-15
申请号：US569827
申请日：1995-12-07
申请人： Judy A. Godbey , Jyothi S. Pisipati
发明人： Judy A. Godbey , Jyothi S. Pisipati
CPC分类号： C08J9/0066 , C08G18/708 , C08J9/14 , C08K3/04 , C08G2101/0025 , C08G2101/005 , C08J2375/04
摘要： A process for the manufacture of a closed cell, rigid, polymer foam from polymer foam-forming ingredients containing a filler which comprises:(a) dispersing the filler in at least a portion of the foam-forming ingredients to form a filled dispersion, a fluorochemical surfactant being incorporated in the foam-forming ingredients either before, during or after the dispersing operation to form a dispersion containing a filler and a fluorochemical surfactant,(b) mixing the dispersion formed in step (a) with any remaining foam-forming ingredient or ingredients, and(c) foaming and curing the resultant foam-forming composition.The fluorochemical surfactant improves the stability, flowability and mixing of the dispersion during the foam production.
摘要翻译： 一种用于从包含填料的聚合物泡沫形成成分制备闭孔刚性聚合物泡沫的方法，其包括：（a）将所述填料分散在所述泡沫形成成分的至少一部分中以形成填充的分散体， 氟化表面活性剂在分散操作之前，期间或之后加入发泡成分中，以形成含有填料和含氟表面活性剂的分散体，（b）将步骤（a）中形成的分散体与任何剩余的起泡成分 或成分，和（c）发泡和固化所得到的泡沫形成组合物。 含氟表面活性剂改善泡沫生产期间分散体的稳定性，流动性和混合性。
-
3.发明授权Toluene diisocyanate residue-based compositions as fillers for polyisocyanates 失效基于甲苯二异氰酸酯残基的组合物作为多异氰酸酯的填料
公开(公告)号：US5753750A
公开(公告)日：1998-05-19
申请号：US777316
申请日：1996-12-27
CPC分类号： C08G18/8064 , C08G18/727 , C08K5/29
摘要： TDI residue-based urethane-filled isocyanate compositions are produced by reacting a TDI residue satisfying specified criteria with a monofunctional alcohol in amounts such that the equivalent ratio of isocyanate groups to hydroxyl groups is from about 0.9:1 to about 1:0.9. This reaction product is then dissolved in a diisocyanate or polyisocyanate. These TDI residue-based urethane-filled isocyanate compositions are particularly useful in the production of polyurethanes.
摘要翻译： 通过使满足特定标准的TDI残基与单官能醇反应，使得异氰酸酯基与羟基的当量比为约0.9:1至约1:0.9来制备TDI残余物聚氨酯填充的异氰酸酯组合物。 然后将该反应产物溶解在二异氰酸酯或多异氰酸酯中。 这些基于TDI残渣的氨基甲酸酯填充的异氰酸酯组合物特别可用于生产聚氨酯。
-
-
搜索结果
3 条记录 (耗时 0.009 秒)
