Abstract: Phosphorus-containing flame retardant mixtures, a process for production of said mixtures and use of said mixtures, and also epoxy resin formulations which comprise said flame retardant mixtures. The present invention relates to phosphorus-containing flame retardant mixtures, comprising individual flame retardants having in each case one or more functional groups of the formulae (I), (II) and (III), where, based on the total quantity of functional groups in the flame retardant mixture, 1 to 98 mol % of functional groups of the formula (I), 1 to 35 mol % of functional groups of the formula (II) and 1 to 98 mol % of functional groups of the formula (III) are present, and where R1 and R2 are identical or different and are mutually independently hydrogen, C1- to C12-alkyl, linear or branched, and/or C6- to C18-aryl and the entirety of (I), (II) and (III) is always 100 mol %.

Abstract: The invention relates to additive mixtures for plastics containing phosphinic acid of the formula (I) as component A, wherein R1 and R2 mean ethyl, M is Al, Fe, TiOp or Zn, m means 2 to <4, preferably 2 or 3, and p=(4?m)/2 is a compound selected from the group of Al, Fe, TiOp or Zn salts of ethylbutylphosphinic acid, dibutylphosphinic acid, ethylhexylphosphinic acid, butylhexylphosphinic acid and/or dihexylphosphinic acid as component B, phosphonic acid salt of formula (II) as component C, wherein R3 means ethyl, Met is Al, Fe, TiOq or Zn, n means 2 to 3, and q=(4?n)/2, and antimony, tin and/or indium as component D. Polymer compositions containing said additive mixtures are characterized by exceptional flame protection and by very good laser markability or laser weldability.

Abstract: A flame-retardant polyamide composition can be prepared with a glow wire ignition temperature of not less than 775° C. Such a composition can include a polyamide having a melting point of not more than 290° C. as component A, fillers and/or reinforcers as component B, a phosphinic salt of the formula (I) as component C, a compound selected from the group of the Al, Fe, TiOp and Zn salts of ethylbutylphosphinic acid, of dibutylphosphinic acid, of ethylhexylphosphinic acid, of butylhexylphosphinic acid and/or of dihexylphosphinic acid as component D, a phosphonic salt of the formula (II) as component E, and a melamine polyphosphate having an average degree of condensation of 2 to 200 as component F. Additional components can be included in the composition.

Abstract: Flame retardant mixtures, flame-retardant polymer compositions, cables endowed therewith and use thereof What are described are flame retardant mixtures comprising a) salt of a phosphinic acid of the formula (I) in which R1 and R2 are independently alkyl, cycloalkyl, aryl or aralkyl that are optionally substituted, M is an m-valent cation, and m is 1 to 4, b) salt of a phosphinic acid of the formula (II) that differs from component a) in which R3 is optionally substituted alkyl, cycloalkyl, cycloalkylalkyl, aryl or aralkyl, preferably with alkyl radicals as substituents, R4 is alkyl with an even number of carbon atoms, with the proviso that, if R1 and/or R2 are alkyl, R4 has twice, three times or four times the number of carbon atoms of R1 or R2, M is an n-valent cation, and n is 1 to 4, c) organylphosphonate, d) phosphite, e) silicate, alumosilicate and/or silicon dioxide which is solid at 25° C.

Abstract: The invention relates to diorganylphosphinic salts containing 0.0001% to 99.9999% by weight of iron, to a process for preparation thereof and to the use thereof.

Abstract: Flame-retardant mixtures containing: a) salt of phosphinic acid of formula (I), wherein R1 and R2 mean, independently of each other, alkyl-, cycloalkyl-, aryl- or aralkyl, substituted as applicable, M is m-valent cation, and m means 1 to 4, b) salt of phosphinic acid of formula (II), differing from component a), wherein R3 means substituted, as applicable, alkyl-, cycloalkyl-, cycloalkyl-alkyl, aryl- or aralkyl, preferably with alkyl radicals as substituents, R4 is alkyl having even number of carbon atoms (if R1 and/or R2 are alkyl, R4 has double, triple or quadruple the number of carbon atoms of R1 or R2), M is n-valent cation and n means 1 to 4, c) organylphosphonate, d) phosphite, e) as applicable, a representative selected from the group consisting of triazine complex, polyphosphate, hypophosphite, nitrogenous diphosphate, organophosphate, phosphazene and/or polyphosphonate, f) as applicable, a representative selected from the group consisting of metal hydroxide, metal carbonate, metal borate, zinc stanna

Abstract: The invention relates to flame-retardant polyamide compositions with a glow wire ignition temperature of not less than 775° C., comprising polyamide having a melting point of not more than 290° C. as component A, fillers and/or reinforcers as component B, phosphinic salt of the formula (I) as component C in which R1 and R2 are ethyl, M is Al, Fe, TiOp or Zn, m is 2 to 3, and p=(4?m)/2 compound selected from the group of the Al, Fe, TiOp and Zn salts of ethylbutylphosphinic acid, of dibutylphosphinic acid, of ethylhexylphosphinic acid, of butylhexylphosphinic acid and/or of dihexylphosphinic acid as component D phosphonic salt of the formula (II) as component E in which R3 is ethyl, Met is Al, Fe, TiOq or Zn, n is 2 to 3, and q=(4?n)/2, and melamine polyphosphate having an average degree of condensation of 2 to 200 as component F.

Abstract: The invention relates to flame-retardant polyamide compositions comprising polyamide having a melting point of not more than 290° C. as component A, fillers and/or reinforcers as component B, phosphinic salt of the formula (I) as component C in which R1 and R2 are ethyl, M is Al, Fe, TiOp or Zn, m is 2 to 3, and p=(4?m)/2 compound selected from the group of the Al, Fe, TiOp and Zn salts of ethylbutylphosphinic acid, of dibutylphosphinic acid, of ethylhexylphosphinic acid, of butylhexylphosphinic acid and/or of dihexylphosphinic acid as component D phosphonic salt of the formula as component E in which R3 is ethyl, Met is Al, Fe, TiOq or Zn, n is 2 to 3, and q=(4?n)/2 melamine polyphosphate having an average degree of condensation of 2 to 200 as component F, and gray colorant as component G.

Abstract: The invention relates to a novel flame retardant-stabilizer combination for thermoplastic polymers, comprising, as component A, from 25 to 99.9% by weight of a phosphinic acid salt of the formula (I) wherein R1, R2 are the same or different and are each C1-C8-alkyl, linear or branched, C6-C18-aryl, C7-C18-arylalkyl or C7-C18-alkylaryl, or R1 and R2 form one or more rings with each other, M is Mg, Ca, Al, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, K and/or a protonated nitrogen base; m is from 1 to 4; as component B, from 0 to 75% by weight of a synergist or of a phosphorus/nitrogen flame retardant and, as component C, from 0.1 to 30% by weight of telomeric phosphinic acid salts as component D, from 0 to 20% by weight of organo phosphonic acid salt, as component E, from 0 to 5% by weight of phosphonic acid salt, the sum of the components always being 100% by weight, and wherein the angle of repose of said flame retardant-stabilizer combination is between 5° and 45°.

Abstract: The invention relates to a flame retardant mixture comprising 99.9999% to 87% by weight of diorganylphosphinic acid salts as component A) and 0.0001% to 13% by weight of iron as component B), where the sum total of A) and B) is 100% by weight. The invention likewise relates to processes for producing the aforementioned flame retardant mixture and to the use thereof.

Abstract: What are described are flame-retardant polyamide compositions having a heat deflection temperature HDT-A of at least 280° C., comprising polyamide having a melting point of not less than 290° C. as component A, fillers and/or reinforcers as component B, phosphinic salt of the formula (I) as component C in which R1 and R2 are ethyl, M is Al, Fe, TiOp or Zn, m is 2 to 3, and p=(4?m)/2 compound selected from the group of the Al, Fe, TiOp and Zn salts of ethylbutylphosphinic acid, of dibutylphosphinic acid, of ethylhexylphosphinic acid, of butylhexylphosphinic acid and/or of dihexylphosphinic acid as component D, and monoethylphosphinic salt of the formula II as component E in which R3 is ethyl, Met is Al, Fe, TiOq or Zn, n is 2 to 3, and q=(4?n)/2. The polyamide compositions can be used for production of fibers, films and shaped bodies, especially for applications in the electricals and electronics sector.

Abstract: The invention relates to flame-retardant polyamide compositions comprising polyamide having a melting point of not more than 290° C. as component A, fillers and/or reinforcers as component B, phosphinic salt of the formula (I) as component C in which R1 and R2 are ethyl, M is Al, Fe, TiOp or Zn, m is 2 to 3, and p=(4?m)/2 compound selected from the group of the Al, Fe, TiOp and Zn salts of ethylbutylphosphinic acid, of dibutylphosphinic acid, of ethylhexylphosphinic acid, of butylhexylphosphinic acid and/or of dihexylphosphinic acid as component D phosphonic salt of the formula (II) as component E in which R3 is ethyl, Met is Al, Fe, TiOq or Zn, n is 2 to 3, and q=(4?n)/2 melamine polyphosphate having an average degree of condensation of 2 to 200 as component F, and wax selected from the group of the polyolefin waxes, amide waxes, natural waxes, long-chain aliphatic carboxylic acids and/or the esters or salts thereof as component G.

Abstract: The invention relates to flame-retardant polyester compositions comprising thermoplastic polyester as component A, fillers and/or reinforcers as component B, phosphinic salt of the formula (I) as component C in which R1 and R2 are ethyl, M is Al, Fe, TiOp or Zn, m is 2 to 3, and p=(4?m)/2 compound selected from the group of the Al, Fe, TiOp and Zn salts of ethylbutylphosphinic acid, of dibutylphosphinic acid, of ethylhexylphosphinic acid, of butylhexylphosphinic acid and/or of dihexylphosphinic acid as component D phosphonic salt of the formula II as component E in which R3 is ethyl, Met is Al, Fe, TiOq or Zn, n is 2 to 3, and q=(4?n)/2, inorganic phosphonate as component F, and wax selected from the group consisting of the polyolefin waxes, amide waxes, natural waxes, long-chain aliphatic carboxylic acids and/or esters or salts thereof as component G.

Abstract: The invention relates to flame-retardant polyamide compositions having a heat deflection temperature HDT-A of not less than 280° C., comprising polyamide having a melting point of not less than 290° C. as component A, fillers and/or reinforcers as component B, phosphinic salt of the formula (I) as component C in which R1 and R2 are ethyl, M is Al, Fe, TiOp or Zn, m is 2 to 3, and p=(4?m)/2 compound selected from the group of the Al, Fe, TiOp and Zn salts of ethylbutylphosphinic acid, of dibutylphosphinic acid, of ethylhexylphosphinic acid, of butylhexylphosphinic acid and/or of dihexylphosphinic acid as component D, and phosphonic salt of the formula (II) as component E in which R3 is ethyl, Met is Al, Fe, TiOq or Zn, n is 2 to 3, and q=(4?n)/2. The polyamide compositions can be used for production of fibers, films and shaped bodies, especially for applications in the electricals and electronics sector.

Abstract: The invention relates to flame-retardant polyamide compositions comprising polyamide having a melting point of not more than 290° C. as component A, fillers and/or reinforcers as component B, phosphinic salt of the formula (I) as component C in which R1 and R2 are ethyl, M is Al, Fe, TiOp or Zn, m is 2 to 3, and p=(4?m)/2 compound selected from the group of the Al, Fe, TiOp and Zn salts of ethylbutylphosphinic acid, of dibutylphosphinic acid, of ethylhexylphosphinic acid, of butylhexylphosphinic acid and/or of dihexylphosphinic acid as component D phosphonic salt of the formula (II) as component E in which R3 is ethyl, Met is Al, Fe, TiOq or Zn, n is 2 to 3, and q=(4?n)/2 melamine polyphosphate having an average degree of condensation of 2 to 200 as component F, sterically hindered phenolic antioxidant as component G, and/or organic phosphite and/or organic phosphonite as component H.

Abstract: The invention relates to flame-retardant polyamide compositions comprising polyamide having a melting point of not more than 290° C. as component A, fillers and/or reinforcers as component B, phosphinic salt of the formula (I) as component C in which R1 and R2 are ethyl, M is Al, Fe, TiOp or Zn, m is 2 to <4, and p=(4?m)/2 compound selected from the group of the Al, Fe, TiOp and Zn salts of ethylbutylphosphinic acid, of dibutylphosphinic acid, of ethylhexylphosphinic acid, of butylhexylphosphinic acid and/or of dihexylphosphinic acid as component D phosphonic salt of the formula II as component E in which R3 is ethyl, Met is Al, Fe, TiOq or Zn, n is 2 to <4, and q=(4?n)/2 melamine polyphosphate having an average degree of condensation of 2 to 200 as component F, and black colorant as component G. The black polyamide compositions can be used for production of fibers, films and shaped bodies, especially for applications in the electricals and electronics sector.

Abstract: The invention relates to additive mixtures for plastics containing phosphinic acid salt of formula (I) as component A, where R1 and R2 mean ethyl, M is Al, Fe, TiOp or Zn, m means 2 to 3, preferably 2 or 3, and p=(4?m)/2 is a compound selected from the group of Al salts, Fe salts, TiOp salts or Zn salts of ethylbutylphosphinic acid, dibutylphosphinic acid, ethylhexylphosphinic acid, butylhexylphosphinic acid and/or dihexylphosphinic acid as component B, phosphonic acid salt of formula (II) as component C, where R3 means ethyl, Met is Al, Fe, TiOq or Zn, n means 2 to 3, preferably 2 or 3, and q=(4?n)/2, and copper as component D.

Abstract: The invention relates to additive mixtures for plastics containing phosphinic acid of the formula (I) as component A, wherein R1 and R2 mean ethyl, M is Al, Fe, TiOp or Zn, m means 2 to <4, preferably 2 or 3, and p=(4?m)/2 is a compound selected from the group of Al, Fe, TiOp or Zn salts of ethylbutylphosphinic acid, dibutylphosphinic acid, ethylhexylphosphinic acid, butylhexylphosphinic acid and/or dihexylphosphinic acid as component B, phosphonic acid salt of formula (II) as component C, wherein R3 means ethyl, Met is Al, Fe, TiOq or Zn, n means 2 to 3, and q=(4?n)/2, and antimony, tin and/or indium as component D. Polymer compositions containing said additive mixtures are characterized by exceptional flame protection and by very good laser markability or laser weldability.

Abstract: 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.

Abstract: The invention relates to the process for preparing ethylenedialkylphosphinic acids, esters and salts, wherein a) a phosphonic acid source (I) is reacted with olefins (IV) in the presence of a catalyst A to give an alkylphosphonous acid (II), or salt or ester thereof, b) the alkylphosphonous acid (II), or the salt or ester thereof, is reacted with an acetylenic compound (V) in the presence of a catalyst B to give the ethylenedialkylphosphinic acid derivative (III) where R1, R2, R3, R4, R5, R6, R11, R12, R13, R14 are the same or different and are each independently H, C1-C18-alkyl, C6-C18-aryl, C6-C18-aralkyl, C6-C18-alkylaryl, where the C6-C18-aryl, C6-C18-aralkyl, C6-C18-alkylaryl groups may be substituted by —C(O)CH3, OH, CH2OH, NH2, NO2, OCH3, SH and/or OC(O)CH3, and X is Mg, Ca, Al, Sb, Sn, Ge, Ti, Fe, Zr, Zn, Ce, Bi, Sr, Mn, Cu, Ni, Li, Na, K, H and/or a protonated nitrogen base, and/or is H, C1-C18-alkyl, C6-C18-aryl, C6-C18-aralkyl, C6-C18-alkylaryl, (CH2)kOH, CH2—CHOH—CH2OH, (CH2)kO(CH2)lH, (CH2