15-03-2018 дата публикации
Номер: US20180072865A1
Flame retardant mixtures comprising as component (A) 30% to 99.9% by weight of dialkylphosphinic salts of the formula (II), a and b may be the same or different and are each independently 1 to 9, and where the carbon chains may be linear, branched or cyclic and M is Mg, Ca, Al, Sb, Sn, Ge, Ti, Fe, Zr, Zn, Ce, Bi, Sr, Mn, Li, Na, K and/or a protonated nitrogen base and m is 1 to 4, as component (B) 0.1% to 70% by weight of alkyl hydroxyalkylphosphinyl organylcarboxylic acid salts and/or ester salts of the formula (I) where R1CyH2y+1 with y=2 to 8, R2, R3, R4, R5, R6 are the same or different and are each independently H, CxH2x+1, CxH2x−1, CxH2x−3, CxH2xCO2X, CxH2x−2CO2X, CxH2x−4CO2X, (C2H3CO2X)u and u=0 to 1000000, CO2X, CxH2x(P(O)(OM)R1), CxH2x−2(P(O)(OM)R1)(CO2X) and/or CH2CO2X, where, in the R1, R2, R3, R4, R5 and R6 groups, the carbon chains may be linear, branched or cyclic, M′ is Mg, Ca, Al, Sb, Sn, Ge, Fe, Ti, Zr, Zn, Ce, Bi, Sr, Mn, Li, Na, K, H and/or N-containing cations, x is 1 to 25, X is H, M, CzH2z+1 and z is 1 to 8, with the proviso that at least one of the R2, R3, R4, R5, R6 groups is not H, and the compounds of formula (II) and formula (I) are different compounds. 2. The flame retardant mixture as claimed in claim 1 , comprisingas component (A) 50 to 99.9 wt % of dialkylphosphinic salts of the formula (II), and as component (B) 0.1 to 50 wt % of alkyl-hydroxyalkylphosphinyl-organylcarboxylic salts of the formula (I), ester salts of the formula (I) or a combination thereof.3. The flame retardant mixture as claimed in claim 1 , comprisingas component (A) 90 to 99.8 wt % of dialkylphosphinic salts of the formula (II), andas component (B) 0.2 to 10 wt % of alkyl-hydroxyalkylphosphinyl-organylcarboxylic salts of the formula (I) ester salts of the formula (I) or a combination thereof.4. The flame retardant mixture as claimed in claim 1 , wherein a and b in formula (II) are identical or different and claim 1 , independently of one another claim 1 , are each ...
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