Abstract: Provided herein is a process for isolating at least one (thio)phosphoric acid derivative, which has a boiling point of at least 70° C., from a product mixture including the at least one (thio)phosphoric acid derivative, at least one salt selected from ammonium salts and alkali metal chlorides, at least one polar solvent selected from the group consisting of ester solvents and ether solvents, and optionally at least one HCl scavenger; wherein the process is based on first dissolving the (thio)phosphoric acid derivative to be able to remove the at least one salt, and then causing solids formation of the (thio)phosphoric acid derivative.

Abstract: Provided herein is a process for isolating at least one (thio)phosphoric acid derivative, which has a boiling point of at least 70° C., from a product mixture including the at least one (thio)phosphoric acid derivative, at least one salt selected from ammonium salts and alkali metal chlorides, at least one polar solvent selected from the group consisting of ester solvents and ether solvents, and optionally at least one HCl scavenger; wherein the process is based on first dissolving the (thio)phosphoric acid derivative to be able to remove the at least one salt, and then causing solids formation of the (thio)phosphoric acid derivative.

Abstract: Use of a phosphorus compound of the formula (I) as flame retardant, where the definitions of the symbols in the formula (I) are as follows: A is one of the following groups: Y is —P(?X2)SR3R4, H, a straight-chain or branched C1-C12-alkyl group, C5-C6-cycloalkyl, C6-C12-aryl, or benzyl, where the four last-mentioned groups are unsubstituted or have substitution by one or more radicals from the group of C1-C4-alkyl or C1-C4-alkenyl; R1, R2, R3, and R4 are identical or different and are hydrogen, OH, C1-C16-alkyl, C1-C16-alkenyl, C1-C16-alkoxy, C1-C16-alkenoxy, C3-C10-cycloalkyl, C3-C10-cycloalkoxy, C6-C10-aryl, C6-C10-aryloxy, C6-C10-aryl-C1-C16-alkyl, C6-C10-aryl-C1-C16-alkoxy, SR9 COR10, COOR11, CONR12R13 or two radicals R1, R2, R3, or R4 form, together with the phosphorus atom to which they are bonded, or the P—O-A-O—P group, a ring system; R5, R6, R7, and R8 are identical or different and are H, C1-C16-alkyl, C1-C16-alkenyl, C1-C16-alkoxy, C1-C16-alkenoxy; R9, R10, R11, R12, R13 are identical or

Abstract: A flame retardant comprising a) at least one sulfur compound of the formula (I) A1-(Z1)m—(S)n—(Z2)p-A2??(I) where the definitions of the symbols and indices are as follows: A1 and A2 are identical or different, being C6-C12-aryl, cyclohexyl, Si(ORa)3, a saturated, partially unsaturated, or aromatic, mono- or bicyclic ring having from 3 to 12 ring members and comprising one or more heteroatoms from the group of N, O, and S, where the system is unsubstituted or has substitution by one or more substituents of the group of O, OH, S, SH, COORb, CONRcRd, C1-C18-alkyl, C1-C18-alkoxy, C1-C18-thioalkyl, C6-C12-aryl, C6-C12-aryloxy, C2-C18-alkenyl, C2-C18-alkenoxy, C2-C18-alkynyl, and C2-C18-alkinoxy; Z1 and Z2 are identical or different, being —CO— or —CS—; Ra is C1-C18-alkyl; Rb, Rc, and Rd are identical or different, being H, C1-C18-alkyl, C6-C12-aryl, or an aromatic, mono- or bicyclic ring having from 3 to 12 ring members and comprising one or more heteroatoms from the group of N, O, and S; m and p are identic

Abstract: Disclosed is a polymer foam with density in the range from 5 to 120 kg/m3 composed of a polymer component including at least one styrene polymer and from 0.1 to 5 parts by weight of a flame retardant mixture including at least one phosphorus compound of the formula PR1R2R3. A process for producing the polymer is also disclosed.

Abstract: The invention relates to a polymer composition containing i) styrene polymer(s) and ii) phosphorylated polyether(s) with from 0.5 to 40% by weight phosphorus content, the main chain of which is formed exclusively from carbon atoms and from oxygen atoms, and which has at least three terminal and/or pendant OH groups, where these have been substituted with where ˜ indicates the bond to the polymer skeleton of the polyether; Y is O or S; t is 0 or 1; R1 and R2, being identical or different, are H, C1-C18-alkyl, C2-C18-alkenyl, C2-C18-alkynyl, C3-C10-cycloalkyl, C6-C10-aryl, furyl, C6-C10-aryl-C1-C10-alkyl, OR3, SR3, NR3R4, COR3, COOR3 or CONR3R4, or R1 and R2 form, together with the phosphorus atom P, a 4-8-membered ring system; R3 and R4, being identical or different, are H, C1-C16-alkyl, C2-C16-alkenyl, C3C16-alkynyl, C3-C10-cycloalkyl, C6-C10-aryl or C6-C10-aryl-C1-C10-alkyl, and/or polycarbonates containing phosphorus-containing group(s) of the general formula (I).

Abstract: Use of a phosphorus compound of the formula (I) as flame retardant, where the definitions of the symbols in the formula (I) are as follows: A is one of the following groups: Y is —P(?X2)SR3R4, H, a straight-chain or branched C1-C12-alkyl group, C5-C6-cycloalkyl, C6-C12-aryl, or benzyl, where the four last-mentioned groups are unsubstituted or have substitution by one or more radicals from the group of C1-C4-alkyl or C1-C4-alkenyl; R1, R2, R3, and R4 are identical or different and are hydrogen, OH, C1-C16-alkyl, C1-C16-alkenyl, C1-C16-alkoxy, C1-C16-alkenoxy, C3-C10-cycloalkyl, C3-C10-cycloalkoxy, C6-C10-aryl, C6-C10-aryloxy, C6-C10-aryl-C1-C16-alkyl, C6-C10-aryl-C1-C16-alkoxy, SR9 COR10, COOR11, CONR12R13 or two radicals R1, R2, R3, or R4 form, together with the phosphorus atom to which they are bonded, or the P—O-A-O—P group, a ring system; R5, R6, R7, and R8 are identical or different and are H, C1-C16-alkyl, C1-C16-alkenyl, C1-C16-alkoxy, C1-C16-alkenoxy; R9, R10, R11, R12, R13 are identical or

Abstract: The present invention is related to the use of specific derivatives of diphosphines as flame retardants in aromatic and heteroaromatic epoxy resins and to a method for reducing the flammability of organic material comprising aromatic and/or heteroaromatic epoxy resins in which the specific derivates of diphosphines are incorporated. Moreover, the invention is related to an aromatic and/or heteroaromatic epoxy resin composition containing aromatic and heteroaromatic epoxy resin as such or in processed form and incorporated in the aromatic and/or heteroaromatic epoxy resin at least one of the derivatives of diphosphines in an amount of from 1 to 35% by weight, based on the weight of the aromatic and/or heteroaromatic epoxy resin.

Abstract: Flame-retardant polymer foams which comprise, as flame retardant, at least one halogenated polymer, for example brominated polystyrene or styrene-butadiene block copolymer having bromine content in the range from 40 to 80% by weight, or tetrabromobisphenol A compounds (TBBPA), processes for producing these, and also flame-retardant expandable styrene polymers.

Abstract: Halogen-free, flame-retardant polymer foams which comprise, as flame retardant, at least one cyclic or acyclic oligophosphorus compound, and processes for their production. Examples of suitable oligophosphorus compounds are those having the structure Ia, Ib, or Ic: Another group of suitable oligophosphorus compounds is that having one of the following structures IIa, IIb, or IIc: Cyclic oligophosphorus compounds of the following structure III are also suitable: The radicals R1-R5 have been selected independently of one another from the group of C1-C16-alkyl, C1-C16-alkenyl, C1-C16-alkoxy, C1-C16-alkenyloxy, C3-C10-cycloalkyl, C3-C10-cycloalkoxy, C6-C10-aryl, C6-C10-aryloxy, C6-C10-aryl-C1-C16-alkyl, C6-C10-aryl-C1-C16-alkoxy, NR2R3, COR2, COOR2, and CONR2R3 , and the radicals X1 and X2, independently of one another, are O or S.

Abstract: The invention relates to a flame retardant comprising a) at least one sulfur compound of the formula (I) b) at least one halogen-free organophosphorus compound with phosphorus content in the range from 0.5 to 40% by weight, based on the phosphorus compound.

Abstract: A flame retardant comprising a) at least one sulfur compound of the formula (I) A1-(Z1)m—(S)n—(Z2)p-A2??(I) where the definitions of the symbols and indices are as follows: A1 and A2 are identical or different, being C6-C12-aryl, cyclohexyl, Si(ORa)3, a saturated, partially unsaturated, or aromatic, mono- or bicyclic ring having from 3 to 12 ring members and comprising one or more heteroatoms from the group of N, O, and S, where the system is unsubstituted or has substitution by one or more substituents of the group of O, OH, S, SH, COORb, CONRcRd, C1-C18-alkyl, C1-C18-alkoxy, C1-C18-thioalkyl, C6-C12-aryl, C6-C12-aryloxy, C2-C18-alkenyl, C2-C18-alkenoxy, C2-C18-alkynyl, and C2-C18-alkinoxy; Z1 and Z2 are identical or different, being —CO— or —CS—; Ra is C1-C18-alkyl; Rb, Rc, and Rd are identical or different, being H, C1-C18-alkyl, C6-C12-aryl, or an aromatic, mono- or bicyclic ring having from 3 to 12 ring members and comprising one or more heteroatoms from the group of N, O, and S; m and p are

Abstract: A polymer foam with density in the range from 5 to 120 kg/m3, comprising a) a polymer component, comprising at least one styrene polymer, b) from 0.

Abstract: Phosphine sulfide derivatives of the formula (I), S?PR1R2R3??(I) are suitable as flame retardants, in particular for polymers, where the definitions of the symbols in the formula (I) are as follows: R1 and R2 are identical or different, being C1-C12-alkyl, C3-C8-cycloalkyl, which may have no substitution or may have one or more C1-C4-alkyl groups as substituents, C2-C12-alkenyl, C2-C12-alkynyl, C6-C10-aryl, or C8-C10-aryl-C1-C4-alkyl; R3 is H, SH, SR4, OH, OR5 or a —(Y1)n—[P(?X1)R6—(Y2)n]m—P(?X2)R7R8 group; or two groups R1, R2, R3 form, together with the phosphorus atom bonded thereto, a ring system; X1 and X2 are identical or different, being O or S; Y1 and Y2 are identical or different, being O or S; R4, R5, R6, R7 and R8 are identical or different, being independently from one another C1-C12-alkyl, C3-C8-cycloalkyl, which may have no substitution or may have one or more C1-C4-alkyl groups as substituents, C2-C12-alkenyl, C2-C12-alkynyl, C6-C10-aryl, or C6-C10-aryl-C1-C4-alkyl; n is 1 if Y1 and, respec