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1.
公开(公告)号:US4072638A
公开(公告)日:1978-02-07
申请号:US729424
申请日:1976-10-04
IPC分类号: C08G18/50 , C08G59/14 , C08G65/22 , C08G65/24 , C08G65/26 , C08G65/324 , C08G65/327 , C08G65/335
CPC分类号: C08G18/5006 , C08G59/1427 , C08G65/223 , C08G65/24 , C08G65/2639 , C08G65/324 , C08G65/327 , C08G65/335
摘要: Rigid and semi-rigid, fire-resisting polyurethane foams which are prepared by reacting in the presence of a foaming agent and a reaction catalyst an organic polyisocyanate and at least one polyether-polyol having the general formula: ##STR1## IN WHICH Z REPRESENTS A NUMBER BETWEEN 2 AND 6, X AND Y REPRESENT NUMBERS BETWEEN 0 AND 12 SUCH THAT THE MEAN VALUE X+Y PER CHAIN IS BETWEEN 0 AND 12, AND THAT Z (X+Y), IN WHICH X+Y REPRESENTS THE MEAN VALUE OF X+Y IN THE ENTIRE MOLECULE, IS BETWEEN 1 AND 72, AND Z represents a radical of valence z which is the residue of an organic polyhydroxyl compound initiator having from 2 and 6 hydroxyl groups.
摘要翻译: 刚性和半刚性的耐火聚氨酯泡沫,其通过在发泡剂和反应催化剂存在下反应制备,有机多异氰酸酯和至少一种具有以下通式的聚醚多元醇:其中Z代表A 2和6之间的数字,X和Y代表0和12之间的代表数字,即平均值X + Y在0和12之间,以及Z(X + Y),其中X + Y表示平均值 X + Y在整个分子中为1和72,Z表示价数z的基团,其是具有2和6个羟基的有机多羟基化合物引发剂的残基。
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2.
公开(公告)号:US4173710A
公开(公告)日:1979-11-06
申请号:US851252
申请日:1977-11-14
IPC分类号: C07C43/13 , C08G18/50 , C08G59/14 , C08G65/22 , C08G65/24 , C08G65/26 , C08G65/324 , C08G65/327 , C08G65/335 , C07C43/02 , C07C43/12 , C08J9/00
CPC分类号: C08G18/5006 , C07C43/137 , C08G59/1427 , C08G65/223 , C08G65/24 , C08G65/2639 , C08G65/324 , C08G65/327 , C08G65/335
摘要: New halogenated polyether polyols for the production of permanently fire-proof polyurethane foams, said halogenated polyether polyols corresponding to the general formula: ##STR1## in which z represents a number between 2 and 6, x and y represent numbers between 0 and 12 such that the mean value x+y per chain is between 0 and 12, and that z (x+y), in which x+y represents the mean value of x+y in the entire molecule, is between 1 and 72, and Z represents the residue of a halogenated polyhydroxyl compound initiator and comprises a C.sub.2 to C.sub.6 halogenated aliphatic radical of valence z, the halogen being selected from the group consisting of chlorine and bromine.
摘要翻译: 用于生产永久防火聚氨酯泡沫的新型卤代聚醚多元醇,所述卤代聚醚多元醇对应于以下通式:其中z表示2至6之间的数字,其中z表示0至12之间的数字,从而使得 每个链的平均值x + y在0和12之间,并且其中x + y表示整个分子中x + y的平均值的z(x + y)在1和72之间,并且Z表示 卤代多羟基化合物引发剂的残基,并且包含价数z的C2至C6卤代脂族基,卤素选自氯和溴。
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公开(公告)号:US06369231B1
公开(公告)日:2002-04-09
申请号:US08480400
申请日:1995-06-07
申请人: René Walraevens , James Franklin , Paul Trouillet
发明人: René Walraevens , James Franklin , Paul Trouillet
IPC分类号: C07D21172
CPC分类号: C07D213/61
摘要: Described are processes for producing 2-chloropyridine by reacting pyridine with molecular chlorine in the vapor phase in the presence of a catalyst which includes an organic compound which generates free radicals under the conditions of the reaction.
摘要翻译: 描述的是在催化剂存在下,通过吡啶与分子氯在气相中反应制备2-氯吡啶的方法,所述催化剂包括在反应条件下产生自由基的有机化合物。
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