Patent ID: 7446140

Claim:
A diorganylphosphinic salt of the formula (I) a diorganyldiphosphinic salt of the formula (II), a polymer of the diorganylphosphinic salt of the formula (I), a polymer of the diorganyldiphosphinic salt of the formula (II), or a mixture thereof where R 1 and R 2 are identical or different and are C 1 -C 6 -alkyl, linear or branched, or aryl; R 3 is C 1 -C 10 -alkylene, linear or branched, C 6 -C 10 -arylene, -alkylaryiene, or -alkylarylene; M is Mg, Ca, Al, Sb, Sn, Ge, Ti, Fe, Zr, Zn, Ce, Bi, Sr, Mn, Li, Na, K, a protonated nitrogen base or a mixture thereof; m is from 1 to 4; n is from 1 to 4; x is from 1 to 4, wherein there is at least one partially water-soluble, ionizable compound, wherein the total content of at least one partially water-soluble, ionizable compound and the water-soluble content of the at least one partially water-soluble, ionizable compound is from 8200 to 100 ppm, wherein the at least one partially water-soluble, compound is a sulfate and wherein the total content of sulfate is from 3800 to 100 ppm, and the content of water-soluble sulfate is from 1200 to 10 ppm.