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    • 2. 发明授权
    • Dimensionally stable closed cell rigid polyisocyanate based foam
prepared from a froth foaming mixture
    • 由泡沫发泡混合物制备的尺寸稳定的闭孔刚性多异氰酸酯基泡沫
    • US5470891A
    • 1995-11-28
    • US491555
    • 1995-06-16
    • Todd J. GreenJohn R. Tucker
    • Todd J. GreenJohn R. Tucker
    • C08G18/18C08G18/20C08J9/14C08G18/48
    • C08J9/146C08G18/1833C08G18/2081C08G2101/0025C08J2375/04
    • There is now provided a closed cell rigid polyisocyanate based foam blowing with a C.sub.1 -C.sub.4 hydrofluorocarbon and water as blowing agents, which possesses a uniform density gradient varying by not more than 10 percent. There is also now provided a froth foaming mixture having good flow by employing a hydroxy terminated polyol which is pH neutral and a tertiary amine ether blow catalyst in an amount of 0.5 weight percent or more, using water and a C.sub.1 -C.sub.4 hydrofluorocarbon having a boiling point of 300 K or less as co-blowing agents.There is also provided a polyol composition having an average OH number of less than 400 and an average functionality of greater than 4, which when reacted with the isocyanate in the presence of a C.sub.1 -C.sub.4 hydrofluorocarbon, yields a rigid closed cell polyisocyanate based dimensionally stable foam.The formulation according to an especially preferred embodiment of the invention simultaneously satisfies the following requirements:1) a formulated polyol composition having a viscosity of 550 cP or less;2) the isocyanate stream and the formulated polyol stream dispensable at a 0.9:1 to 1.3:1 weight ratio, respectively;3) frothing when dispensed from a static mixer;4) produces a frothing foaming mixture having excellent flow characteristics as demonstrated by a substantially uniform density gradient;5) and produces a dimensionally stable closed cell foam having a low overall density of 2.5 pcf or less.
    • 现在提供了以C1-C4氢氟烃和水作为发泡剂吹制的密闭单元刚性多异氰酸酯基泡沫,其具有不超过10%的均匀密度梯度。 现在还使用水和具有沸点的C 1 -C 4氢氟碳化合物,通过使用pH中性的羟基封端的多元醇和叔胺醚吹制催化剂的量为0.5重量%以上,提供了具有良好流动性的泡沫发泡混合物 300K以下作为共发泡剂。 还提供了平均OH值小于400且平均官能度大于4的多元醇组合物,其在C1-C4氢氟碳化合物的存在下与异氰酸酯反应时产生尺寸稳定的刚性闭孔聚异氰酸酯 泡沫。 根据本发明特别优选的实施方案的制剂同时满足以下要求:1)粘度为550cP以下的配制多元醇组合物; 2)异氰酸酯流和配制的多元醇流分别以0.9:1至1.3:1的重量比分配; 3)从静态混合器分配时发泡; 4)产生具有优异流动特性的发泡发泡混合物,如通过基本均匀的密度梯度所证明的; 5),并产生尺寸稳定的闭孔泡沫,其具有2.5pcs或更低的总密度。
    • 4. 发明授权
    • Dimensionally stable closed cell rigid polyisocyanate based foam
prepared from a froth foaming mixture
    • 由泡沫发泡混合物制备的尺寸稳定的闭孔刚性多异氰酸酯基泡沫
    • US5447964A
    • 1995-09-05
    • US419203
    • 1995-04-10
    • Todd J. GreenJohn R. Tucker
    • Todd J. GreenJohn R. Tucker
    • C08G18/18C08G18/20C08J9/14C09K3/00
    • C08J9/146C08G18/1833C08G18/2081C08G2101/0025C08J2375/04
    • There is now provided a closed cell rigid polyisocyanate based foam blowing with a C.sub.1 -C.sub.4 hydrofluorocarbon and water as blowing agents, which possesses a uniform density gradient varying by not more than 10 percent. There is also now provided a froth foaming mixture having good flow by employing a hydroxy terminated polyol which is pH neutral and a tertiary amine ether blow catalyst in an amount of 0.5 weight percent or more, using water and a C.sub.1 -C.sub.4 hydrofluorocarbon having a boiling point of 300 K. or less as co-blowing agents.There is also provided a polyol composition having an average OH number of less than 400 and an average functionality of greater than 4, which when reacted with the isocyanate in the presence of a C.sub.1 -C.sub.4 hydrofluorocarbon, yields a rigid closed cell polyisocyanate based dimensionally stable foam.The formulation according to an especially preferred embodiment of the invention simultaneously satisfies the following requirements:1) a formulated polyol composition having a viscosity of 550 cP or less;2) the isocyanate stream and the formulated polyol stream dispensable at a 0.9:1 to 1.3:1 weight ratio, respectively;3) frothing when dispensed from a static mixer;4) produces a frothing foaming mixture having excellent flow characteristics as demonstrated by a substantially uniform density gradient;5) and produces a dimensionally stable closed cell foam having a low overall density of 2.5 pcf or less.
    • 现在提供了以C1-C4氢氟烃和水作为发泡剂吹制的密闭单元刚性多异氰酸酯基泡沫,其具有不超过10%的均匀密度梯度。 现在还使用水和具有沸点的C 1 -C 4氢氟碳化合物,通过使用pH中性的羟基封端的多元醇和叔胺醚吹制催化剂的量为0.5重量%以上,提供了具有良好流动性的泡沫发泡混合物 点为300K以下作为共发泡剂。 还提供了平均OH值小于400且平均官能度大于4的多元醇组合物,其在C1-C4氢氟碳化合物的存在下与异氰酸酯反应时产生尺寸稳定的刚性闭孔聚异氰酸酯 泡沫。 根据本发明特别优选的实施方案的制剂同时满足以下要求:1)粘度为550cP以下的配制多元醇组合物; 2)异氰酸酯流和配制的多元醇流分别以0.9:1至1.3:1的重量比分配; 3)从静态混合器分配时发泡; 4)产生具有优异流动特性的发泡发泡混合物,如通过基本均匀的密度梯度所证明的; 5),并产生尺寸稳定的闭孔泡沫,其具有2.5pcs或更低的总密度。
    • 10. 发明授权
    • Dimensionally stable closed cell rigid polyisocyanate based foam
prepared from a froth foaming mixture
    • 由泡沫发泡混合物制备的尺寸稳定的闭孔刚性多异氰酸酯基泡沫
    • US5455283A
    • 1995-10-03
    • US420163
    • 1995-04-11
    • Todd J. GreenJohn R. Tucker
    • Todd J. GreenJohn R. Tucker
    • C08G18/18C08G18/20C08J9/14C08G18/12
    • C08J9/146C08G18/1833C08G18/2081C08G2101/0025C08J2375/04
    • There is now provided a closed cell rigid polyisocyanate based foam blowing with a C.sub.1 -C.sub.4 hydrofluorocarbon and water as blowing agents, which possesses a uniform density gradient varying by not more than 10 percent. There is also now provided a froth foaming mixture having good flow by employing a hydroxy terminated polyol which is pH neutral and a tertiary amine ether blow catalyst in an amount of 0.5 weight percent or more, using water and a C.sub.1 -C.sub.4 hydrofluorocarbon having a boiling point of 300.degree. K. or less as co-blowing agents.There is also provided a polyol composition having an average OH number of less than 400 and an average functionality of greater than 4, which when reacted with the isocyanate in the presence of a C.sub.1 -C.sub.4 hydrofluorocarbon, yields a rigid closed cell polyisocyanate based dimensionally stable foam.The formulation according to an especially preferred embodiment of the invention simultaneously satisfies the following requirements:1) a formulated polyol composition having a viscosity of 550 cP or less;2) the isocyanate stream and the formulated polyol stream dispensable at a 0.9:1 to 1.3:1 weight ratio, respectively;3) frothing when dispensed from a static mixer;4) produces a frothing foaming mixture having excellent flow characteristics as demonstrated by a substantially uniform density gradient;5) and produces a dimensionally stable dosed cell foam having a low overall density of 2.5 pcf or less.
    • 现在提供了以C1-C4氢氟烃和水作为发泡剂吹制的密闭单元刚性多异氰酸酯基泡沫,其具有不超过10%的均匀密度梯度。 现在还使用水和具有沸点的C 1 -C 4氢氟碳化合物,通过使用pH中性的羟基封端的多元醇和叔胺醚吹制催化剂的量为0.5重量%以上,提供了具有良好流动性的泡沫发泡混合物 300℃以下作为共发泡剂。 还提供了平均OH值小于400且平均官能度大于4的多元醇组合物,其在C1-C4氢氟碳化合物的存在下与异氰酸酯反应时产生尺寸稳定的刚性闭孔聚异氰酸酯 泡沫。 根据本发明特别优选的实施方案的制剂同时满足以下要求:1)粘度为550cP以下的配制多元醇组合物; 2)异氰酸酯流和配制的多元醇流分别以0.9:1至1.3:1的重量比分配; 3)从静态混合器分配时发泡; 4)产生具有优异流动特性的发泡发泡混合物,如通过基本均匀的密度梯度所证明的; 5),并产生具有2.5PCF或更低的总体密度低的尺寸稳定的剂量泡沫体。