Abstract: Method for manufacturing oxaphosphaphenantrene oxide acrylate monomers by Phospha-Michael addition to acrylates, which comprises reacting oxaphosphaphenantrene oxide with an ?,?-alkyl diol diacrylate in a molar ratio of 1:1.5 to 1:10 in the presence of a base and a polymerisation inhibitor at temperatures from 70 to 120° C. and unreacted ?,?-alkyl diol diacrylate is separated off, monomers obtainable with the method and their use for manufacturing flame retardant thermoplastic (meth)acrylate polymers and method for manufacturing flame retardant thermoplastic (meth)acrylate polymers with the monomers, polymers obtainable in this way and their use for manufacturing transparent films and panels.

Abstract: The present invention relates to the use of efficient phosphorous substances, in particular based on diphenylamine and heterocyclic diphenylamine derivatives as stabilizers for organic materials, in particular for plastic materials, against oxidative, thermal and/or actinic degradation. The present invention additionally relates to an organic material that has been correspondingly stabilized as described above. The invention further relates to a method of stabilizing organic materials and to specific stabilizers.

Abstract: The invention relates to cellulose esters, the ester groups of which are at least partially containing phosphorus and are based on unsaturated carboxylic acids and reactive phosphorus components, wherein the latter are preferably phosphorus derivatives of sugar alcohols or of tartaric acid derivatives. The invention also relates to methods for preparing novel phosphorus-containing cellulose esters and to their use as flame retardants for plastics.

Abstract: The present invention relates to the use of efficient phosphorous substances, in particular based on diphenylamine and heterocyclic diphenylamine derivatives as stabilizers for organic materials, in particular for plastic materials, against oxidative, thermal and/or actinic degradation. Te present invention additionally relates to an organic material that has been correspondingly stabilized as described above. The invention further relates to a method of stabilizing organic materials and to specific stabilizers.

Abstract: A phosphorous-containing polymer based on an acrylate is described which is not cross-linked or is only slightly cross-linked and forms a polymer. The polymer is suitable as a flame retardant and for use in a flame retardant for plastics.

Abstract: A duromer, a method for producing the duromer, a use of the duromer as well as a flame retardant containing the duromer and plastics compositions thereof are disclosed. A phosphorous-containing polymer which is based on multi-functional esters of unsaturated carboxylic acids is three-dimensionally cross-linked and forms the claimed duromer as described. The duromer is suitable as a flame retardant and suitable for use in flame retardants for plastics.

Abstract: A method for producing compounds of formula (I) in which the radical R1 is selected from —NH2, —NH2-zAz, and monovalent alkyl and aryl radicals, the radicals A are selected in each case independently of one another from the phosphoryl radicals DOPO-, DPhPO- and DPhOPO-, and the indices x, y and z, in each case independently of one another, stand for 0 or 1, wherein at least one of the indices is ?0, by reacting, in a first step, melamine or, when R1 is an alkyl or aryl radical, the corresponding alkyl or aryl guanamine, with one or more of the corresponding phosphinyl chlorides DOP-CI, DPhP-Cl and DPhOP-CI, in order to bond one or more phosphinyl radicals to the amino groups(s) of the melamine or guanamine, and in a second step oxidizing the phosphinyl radical(s) by reaction with an oxidizing agent to give the corresponding phosphoryl radical(s).

Abstract: A duromer, a method for producing the duromer, a use of the duromer as well as a flame retardant containing the duromer and plastics compositions thereof are disclosed. A phosphorous-containing polymer which is based on multi-functional esters of unsaturated carboxylic acids is three-dimensionally cross-linked and forms the claimed duromer as described. The duromer is suitable as a flame retardant and suitable for use in flame retardants for plastics.

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: A method for producing compounds of formula (I) in which the radical R1 is selected from —NH2, —NH2-z Az, and monovalent alkyl and aryl radicals, the radicals A are selected in each case independently of one another from the phosphoryl radicals DOPO—, DPhPO— and DPhOPO—, and the indices x, y and z, in each case independently of one another, stand for 0 or 1, wherein at least one of the indices is ?0, by reacting, in a first step, melamine or, when R1 is an alkyl or aryl radical, the corresponding alkyl or aryl guanamine, with one or more of the corresponding phosphinyl chlorides DOP—CI, DPhP—Cl and DPhOP—CI, in order to bond one or more phosphinyl radicals to the amino groups(s) of the melamine or guanamine, and in a second step oxidising the phsophinyl radical(s) by reaction with an oxidising agent to give the corresponding phosphoryl radical(s).

Abstract: The present invention relates to the use of aromatic P-piperazine-compounds in flame retardant polymer compositions. These compositions are especially useful for the manufacture of flame retardant compositions based on thermoplastic polymers, especially polyolefin homo- and copolymers, polycondensates, such as polyamines or polyesters and duroplastic polymers, such as polyepoxides.

Abstract: The invention relates to ammonium salts of 9,10-dihydro-10-hydroxy-9-oxa-10-phosphaphenanthrene-10-one or -10-oxide (DOPO-OH) of formula I: wherein X is selected from ammonia, melamine, and guanidine, as well as ring-opened hydrolyzates thereof according to the following formula II: wherein X is defined as above.

Abstract: Nitrous bridged derivatives of 6H-dibenz[c,e][1,2]-oxaphosphorine-6-oxides, process for the preparation and use thereof. The invention refers to nitrous bridged derivatives of 6H-dibenz[c,e][1,2]-oxaphosphorine-6-oxides, a process for the preparation thereof and their use as flameproofing agents for polymers such as polyesters, polyamides, polycarbonates, polystyrenes, polyethylene, polypropylene, phenolic and epoxy resins.

Abstract: The invention refers to nitrous bridged derivatives of 6H-dibenz[c,e][1,2]-oxaphosphorine-6-oxides, a process for the preparation thereof and their use as flameproofing agents for polymers such as polyesters, polyamides, polycarbonates, polystyrenes, polyethylene, polypropylene, phenolic and epoxy resins.

Abstract: Nitrous bridged derivatives of 6H-dibenz[c,e][1,2]-oxaphosphorine-6-oxides, process for the preparation and use thereof. The invention refers to nitrous bridged derivatives of 6H-dibenz[c,e][1,2]-oxaphosphorine-6-oxides, a process for the preparation thereof and their use as flameproofing agents for polymers such as polyesters, polyamides, polycarbonates, polystyrenes, polyethylene, polypropylene, phenolic and epoxy resins.

Abstract: A process is provided for the preparation of 9,10-dihydro-9-oxa-10-organylphosphaphenanthrene-10-oxide and derivatives of same substituted on the phenyl groups, in which: (a) 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOP) or a derivative of same is reacted in the presence of at least one mono- or polyhydric alcohol with at least one ortho ester with formation of a first intermediate product, (b) the intermediate product from step (a) is optionally reacted with at least one further mono- or polyhydric alcohol with formation of a further intermediate product and (c) the intermediate product from steps (a) or (b) is transformed by addition of catalytic quantities of alkylation agent into 9,10-dihydro-9-oxa-10-organylphosphaphenanthrene-10-oxide or a derivative of same substituted on the phenyl groups.

Abstract: A process is provided for the preparation of 9,10-dihydro-9-oxa-10-organyloxyphosphaphenanthrene-10-oxide or -thione and derivatives of same substituted on the phenyl groups, in which: (a) 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOP) or a derivative of same is reacted in the presence of at least one mono- or polyhydric alcohol with at least one ortho ester with formation of a first intermediate product, (b) the intermediate product from step (a) is optionally reacted with at least one further mono- or polyhydric alcohol with formation of a further intermediate product and (c) the intermediate product from steps (a) or (b) is transformed by addition of oxidation agent into 9,10-dihydro-9-oxa-10-organyloxyphosphaphenanthrene-10-oxide or -thione or a derivative of same substituted on the phenyl groups.

Abstract: The present invention relates to a process for preparing 6-alkoxy-(6H)-dibenzo[c,e][1,2]oxaphosphorins, wherein 6H-dibenzo[c,e][1,2]oxaphosphorin 6-oxides of the formula I are used as the reactant.

Abstract: The present invention relates to a process for preparing 6-alkoxy-(6H)-dibenzo[c,e][1,2]oxaphosphorins, wherein 6H-dibenzo[c,e][1,2]oxaphosphorin 6-oxides of the formula I are used as the reactant.

Abstract: A process is provided for the preparation of 9,10-dihydro-9-oxa-10-organyloxyphosphaphenanthrene-10-oxide or -thione and derivatives of same substituted on the phenyl groups, in which: (a) 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOP) or a derivative of same is reacted in the presence of at least one mono- or polyhydric alcohol with at least one ortho ester with formation of a first intermediate product, (b) the intermediate product from step (a) is optionally reacted with at least one further mono- or polyhydric alcohol with formation of a further intermediate product and (c) the intermediate product from steps (a) or (b) is transformed by addition of oxidation agent into 9,10-dihydro-9-oxa-10-organyloxyphosphaphenanthrene-10-oxide or -thione or a derivative of same substituted on the phenyl groups.