Flame-resistant polyurethanes

Details Flame-resistant polyurethanes Flame-resistant polyurethanes

C - Chemistry, Metallurgy

08

L

C08L 75/04 (2006.01) C08G 18/38 (2006.01) C08G 18/64 (2006.01) C08G 79/04 (2006.01) C08K 5/521 (2006.01) C08L 85/02 (2006.01)

Patent

CA 2136768

The flame-resistant polyurethanes of the invention comprise, as flameproofing agents, mixtures of oligomeric phosphoric 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 II a, R2 is a radical of the formula III Image (II a: R7 = H) (III) (II b: R7 = C1-C6) R3 is a radical of the formula II b, 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.

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