摘要:
There is provided herein a composition comprising: (a) a flexible polyurethane foam-forming mixture and; an effective flame retarding amount of at least one nan halogen-containing cyclic phosphate ester of the general formula (I) wherein R 1 and R 2 , are the same or different, linear or branched alkyl group containing from up to about 10 carbon atoms, optionally containing heteroatom substituents, provided that R 1 and R 2 are not both methyl; and R 3 -R 7 are each independently hydrogen or the same or different linear or branched alkyl group containing up to about 4 carbon atoms, optionally containing heteroatom substituents; provided that the cyclic phosphate ester is a liquid or is substantially soluble in at least one different liquid flame retardant and/or the hydroxyl-containing component of the flexible polyurethane foam-forming mixture; the cyclic phosphate ester of formula (I) contains at least 8.5 weight percent phosphorous based on the total weight of any phosphorous containing component(s); and, provided that the composition is in the absence of melamine compound. There is also provided a flame retardant additive composition comprising the cyclic phosphate ester of formula (I) and at least one different liquid flame retardant, Further, there is provided a process of making a flame retarded polyurethane foam mixture.