申请人:E. I. Du Pont de Nemours and Company
公开号:US04038312A1
公开(公告)日:1977-07-26
Polycyclic phosphorous triamides of the formula ##STR1## in which R.sup.1 and R.sup.2, alike or different, are alkylene of 2 to about 6 carbons; R.sup.3 and R.sup.4, alike or different, are alkyl of 1 to about 8 carbons, cycloalkyl of 5 to about 8 carbons, or aralkyl where the aryl group is of 6 to about 12 carbons and the alkyl is of 1 to about 8 carbons; or R.sup.3 and R.sup.4 are joined together to form an alkylene group of 2 to about 6 carbons which may be interrupted by 1. a ##STR2## group where Q is hydrogen or alkyl of 1 to about 18 carbons, or 2. ONE OR TWO --O-- linkages; There are at least 2 carbons between each two hetero atoms in the outer ring system, and when the triamide is tricyclic, at least one of the chains between the nitrogens linked to phosphorus contains at least three atoms Are useful as flame retardants for cotton.
多环磷三酰胺的化学式为##STR1##,其中R.sup.1和R.sup.2,相同或不同,是2到约6个碳原子的烷基;R.sup.3和R.sup.4,相同或不同,是1到约8个碳原子的烷基,5到约8个碳原子的环烷基,或芳基烷基,其中芳基含有6到约12个碳原子,烷基含有1到约8个碳原子;或者R.sup.3和R.sup.4相互连接形成一个2到约6个碳原子的烷基,该烷基可以被1.一个##STR2##基团(其中Q是氢或1到约18个碳原子的烷基)或2.一个或两个--O--键连接所中断;在外环系统中,每两个异原子之间至少有2个碳原子,当三酰胺为三环时,连接到磷的氮原子之间的链中至少有一个含有至少三个原子。这些化合物可用作棉花的阻燃剂。