公开(公告)号：US20100056659A1

公开(公告)日：2010-03-04

申请号：US12231212

申请日：2008-08-29

申请人： James W. Rosthauser ,  Theodore S. Frick ,  Michael T. Wellman

发明人： James W. Rosthauser ,  Theodore S. Frick ,  Michael T. Wellman

IPC分类号： B29C44/02 ,  C08G18/76

CPC分类号： C08G18/664 ,  C04B26/16 ,  C04B2201/20 ,  C08G18/4018 ,  C08G18/6674 ,  C08G2101/0025 ,  C08G2101/0083 ,  C08K3/016 ,  C08L27/06 ,  C08L75/04 ,  C08L2666/04 ,  C04B38/0067 ,  C04B38/02 ,  C04B2103/63

摘要： This invention relates to fire-resistant, flexible, molded, medium density polyurethane foams. These foams typically have a density of from 10 to 30 pcf. The foams are the reaction product of a) at least one polyester polyol, b) at least one highly branched polyether polyol, c) at least one chain extender, d) a polymethylene poly(phenyl isocyanate), an isocyanate group containing prepolymer based on a polymethylene poly(phenyl isocyanate), or mixtures thereof, e) a solid flame retardant and f) water. This invention also relates to a process for preparing these polyurethane foams in open molds.

摘要翻译： 本发明涉及耐火，柔性，模塑，中等密度聚氨酯泡沫。 这些泡沫通常具有10至30pcf的密度。 泡沫是a）至少一种聚酯多元醇的反应产物，b）至少一种高度支化的聚醚多元醇，c）至少一种扩链剂，d）多亚甲基聚（苯基异氰酸酯），基于异氰酸酯基的预聚物基于 聚亚甲基聚（苯基异氰酸酯）或其混合物，e）固体阻燃剂和f）水。 本发明还涉及在开模中制备这些聚氨酯泡沫的方法。

公开(公告)号：US20080207784A1

公开(公告)日：2008-08-28

申请号：US11881603

申请日：2007-07-27

申请人： Jan L. Clatty ,  Michael T. Wellman ,  Michael A. Masciantonio

发明人： Jan L. Clatty ,  Michael T. Wellman ,  Michael A. Masciantonio

IPC分类号： C08J9/00

CPC分类号： C08J9/0066 ,  C08G18/4812 ,  C08G18/4866 ,  C08G2101/0025 ,  C08G2101/005 ,  C08G2101/0083 ,  C08J9/0061 ,  C08J2375/04 ,  C08J2427/00

摘要： The present invention provides a rigid polyurethane foam comprising the reaction product, at an isocyanate index of from about 90 to about 400, of a polyisocyanate and a polyol component comprising, about 20 wt. % to about 80 wt. %, based on the weight of the polyol component, of a double metal cyamide (DMC)-catalyzed polyether polyol having a number average molecular weight of greater than about 1,000 Daltons (Da), about 80 wt. % to about 20 wt. %, based on the weight of the polyol component, of a sucrose-based polyol having a functionality of from about 2.5 to about 6 and a number average molecular weight of from about 350 Da to less than about 1,000 Da, and about 0 wt. % to about 40 wt. %, based on the weight of the polyol component, of a low molecular weight organic compound having a number average molecular weight of less than about 600 Da in the presence of water, polyvinylchloride (PVC) particles having a diameter of from about 0.1 microns to about 200 microns, glass beads having a diameter of from about 40 microns to about 400 microns, and about 1 wt. % to about 30 wt. %, based on the weight of the polyol component, of expanded graphite, optionally, in the presence of at least one of carbon dioxide, surfactants, flame retardants other than expanded graphite, crosslinking agents, pigments and catalysts, wherein the rigid polyurethane foam with a density of about 10 pcf to about 25 pcf has a heat sag measured at 102 mm overhang at 121° C. and one hour of less than about 5 mm and an average after-glow time of less than about 35 seconds. The inventive rigid polyurethane foams exhibit improved burn properties and reduced after-glow while maintaining improved heat sag performance over commercial materials.

摘要翻译： 本发明提供一种硬质聚氨酯泡沫，其包含异氰酸酯指数为约90至约400的多异氰酸酯和多元醇组分的反应产物，其包含约20重量％ ％至约80wt。 基于多元醇组分的重量，数均分子量大于约1,000道尔顿（Da）的双金属环酰胺（DMC）催化的聚醚多元醇，约80wt。 ％至约20wt。 基于多元醇组分的重量，官能度为约2.5至约6，数均分子量为约350Da至小于约1,000Da的蔗糖基多元醇和约0wt。 ％至约40wt。 基于多元醇组分的重量，在水存在下具有数均分子量小于约600Da的低分子量有机化合物，直径为约0.1微米的聚氯乙烯（PVC）颗粒至 约200微米，直径约40微米至约400微米的玻璃珠和约1重量％ ％至约30wt。 任选地，在二氧化碳，表面活性剂，膨胀石墨以外的阻燃剂，交联剂，颜料和催化剂中的至少一种的存在下，膨胀石墨的重量基于多元醇组分的重量％，其中硬质聚氨酯泡沫与 约10 pcf至约25 pcf的密度在121℃悬伸时测量的热下垂和小于约5mm的1小时以及小于约35秒的平均余辉时间。 本发明的刚性聚氨酯泡沫具有改进的燃烧性能和减少的余辉，同时保持与商业材料相比改善的热下垂性能。