| 摘要 |
A low-dust pulverized flame retardant composition comprises: (A) organophosphorous flame retardant component and (B) dust-reduction additive(s). (A) comprises a specified metal or (substituted) ammonium dialkyl-phosphinate (I) and/or diphosphinate (II) and/or polymer. The composition has an average particle size of 0.1-1000 microns and average bulk density of 80-800 g/l and the B:A ratio is 1:(9999-4). A low-dust pulverized flame retardant composition comprises: (A) organophosphorous flame retardant component comprising a specified metal or (substituted) ammonium dialkyl-phosphinate of formula (I) and/or diphosphinate of formula (II) and/or polymer, and (B) dust-reduction additive(s). The composition has an average particle size of 0.1-1000 microns and average bulk density of 80-800 g/l and the B:A ratio is 1:(9999-4). R1, R2 = linear or branched 1-6 0C alkyl and/or aryl; R3 = linear or branched 1-10 C alkylene or 6-10 C arylene, alkylarylene or arylalkylene; M = Mg, Ca, Al, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, K and/or a protonized nitrogen base; m, n, x = 1-4. Independent claims are also included for the following: (1) 3 methods of preparing the composition; (2) flame-retardant polymer molding compositions containing such composition(s).
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