Oligomeric phosphoric acid esters which carry hydroxyalkoxy...

Details Oligomeric phosphoric acid esters which carry hydroxyalkoxy... Oligomeric phosphoric acid esters which carry hydroxyalkoxy...

C - Chemistry, Metallurgy

07

F

C07F 9/11 (2006.01) C07F 9/09 (2006.01) C08G 18/38 (2006.01) C08G 18/64 (2006.01) C08K 5/521 (2006.01)

Patent

CA 2136770

The invention relates to mixtures of oligomeric phos- phoric acid esters which carry hydroxyalkoxy groups, of the formula I Image (I) in which ? denotes an average chain length of 0.5 to 10, R1 is a hydroxyl-containing radical of the formula IIa, R2 is a radical of the formula III Image (IIa: R7 = H) (III) (IIb: R7 = C1-C6) R3 is a radical of the formula IIb, R4 is R1 or R3; R5, R6 and R7 are an H atom or an alkyl radical having 1 to 6 carbon atoms, m is 0 to 4 and n is 1 to 4. The invention also relates to a process for the prepara- tion of the mixtures and to their use as reactive flameproofing agents in polyurethane foams.

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