Flame retardants for polyurethanes

Details Flame retardants for polyurethanes Flame retardants for polyurethanes

C - Chemistry, Metallurgy

07

F

400/102, 403/19,

C07F 9/38 (2006.01) C07C 279/24 (2006.01) C07C 279/28 (2006.01) C07F 9/40 (2006.01) C08G 18/38 (2006.01) C08K 5/53 (2006.01) C08K 5/5317 (2006.01) C09K 15/32 (2006.01)

Patent

CA 1273358

ABSTRACT OF THE DISCLOSURE The invention provides polyurethanes and polyisocyanurate having incorporated therein a flame retardant amount of a salt formed by reaction between dimethyl methyl phosphonate, monomethyl methyl phosphonate or methyl phosphonic acid, and a compound of the general formula (I) Image I in which X is O, S or NH, R1 is H, alkyl with 1 to 4 carbon atoms, alkenyl of up to 4 carbon atoms, CN, CONH2 or NH2, R2 is H, alkyl with 1 to 4 carbon atoms or alkenyl of up to 4 carbon atoms or R1 and R2 together with the nitrogen atom to which they are attached form a heterocyclic ring of up to 6 carbon atoms which may optionally contain another hetero atom and R is H, an alkyl group with 1 to 8 carbon atoms, an aryl group with 6 to 10 carbon atoms, a cycloalkyl group with 5 to 12 carbon atoms or a hetero- cyclic group with up to 9 ring carbon atoms, or, together with R1 forms an alkylene chain of 3 to 10 carbon atoms, or R is a group NHR3 wherein R3 is H, alkyl with 1 to 4 carbon atoms, alkenyl of up to 4 carbon atoms, CN, CONH2 or NH2 or together with R1 forms an alkylene chain of 2 or 3 carbon atoms, or R is a group Image where R1 and R2 are as defined above and R4 is a direct bond or an alkylene group having up to 8 carbon atoms or is an arylene group having 6 to 10 carbon atoms.

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