Patent ID: 8519035

Claim:
A method comprising flame retarding or reducing the flammability of organic material by incorporating into a material at least one compound of formula I or of at least one polymer containing repeating units of the formula II or a mixture thereof where each R 1 is independently selected from the group consisting of hydroxy, C 1 -C 10 -alkyl, C 1 -C 10 -alkoxy, C 3 -C 10 -cycloalkyl, C 3 -C 10 -cycloalkoxy, C 6 -C 10 -aryloxy, alkyl, C 6 -C 10 -aryl-C 1 -C 4 -alkoxy, NR 2 R 3 , COR 2 , COOR 2 and CONR 2 R 3 ; each R 2 is independently selected from the group consisting of hydrogen, C 1 -C 10 -alkyl, C 3 -C 10 -cycloalkyl, C 6 -C 10 -aryl and C 6 -C 10 -aryl-C 1 -C 4 -alkyl; R 3 independently has one of the meanings given for R 2 ; m is 0, 1, 2 or 3; and n is an integer from 1 to 6, wherein the organic material is not an epoxy resin or an epoxy resin containing material.