Abstract: A stabilized polyaryl ether ketone molding composition contains as essential componentsA: from 50 to 99.99% by weight of a polyaryl ether ketone A prepared by electrophilic polycondensation and at least 50 mol % of which is made up of units of the general formula I ##STR1## where s and t are each 0, 1,2, or 3 and T and T' are each --O-- or --CO--, or a ring-substituted C.sub.1 -C.sub.8 -alkyl, c.sub.6 -C.sub.20 -arly or halogen derivative thereof,B: from 0.01 to 4% by weight of a phosphorus compound B containing units of the general formula IIa ##STR2## or of the general formula IIb ##STR3## in which the substituents and indices have the following meanings: V is oxygen or sulfur,Q.sup.1 is C.sub.1 -C.sub.25 -alkyl or aryl or from 6 to 25 carbon atoms in which the aromatic rings can be monosubstituted, disubstituted or trisubstituted by slkyl of from 1 to 4 carbon atoms,Q.sup.2 and Q.sup.3 are each independently of the other C.sub.1 -C.sub.20 -alkyl, C.sub.1 -C.sub.

Abstract: Polyphenylene ether-polyamide compositions having improved resistance to water absorption and swell are provided by incorporating therein a phenolic compound.

Abstract: Compositions comprising a polyphenylene ether and, optionally, a styrene resin, an aromatic phosphate, phosphonate or phospine oxide, an aromatic halogen compound and an impact modifier comprising a diene polymer have excellent flame retardant properties during large scale flammability tests. The compositions will tolerate large amounts of aromatic halogen compound without discoloration and processing difficulties. In comparison with compositions of the present state of the art, peak burn temperatures are reduced, smoke is less dense, and flaming drips are eliminated in large as well as small scale burn tests.

Abstract: A polyester, wherein pendent phosphorus atoms are bound to the main chain of the polyester, having an excellent flame resistance and a high intrinsic viscosity can be stably produced without deteriorating the properties of said polyester by preliminarily copolymerizing a polyester with a specific unsaturated compound and then reacting the unsaturated bond thus-formed with a specific phosphorus compound having a P-H bond.

Abstract: Various 1,4-disubstituted-2,3,5,6-tetrohydroxy-1,4-diphosphorinanes, their oxides and sulfides, methods for the production thereof, and flame-retarded compositions of matter containing them, are disclosed.

Abstract: A thixotropic hot-melt adhesive contains reactive silane groups and is still viscous and plastically moldable after cooling. It contains a mixture ofat least one thermoplastic material, andat least one thixotropic agent,wherein silane groups are contained either in the thermoplastic material itself or in at least one added silane-based binder.

Abstract: A halogen-free flameproofed thermoplastic molding material consists of a halogen-free thermoplastic resin (A) and one or more further halogen-free components.The thermoplastic resin (A) is present in an amount of from 30 to 90% by weight, based on the molding material. The latter contains, as further components, from 1 to 50% by weight of a phenol/aldehyde resin (B), from 1 to 50% by weight of a nitrogen-containing organic compound (C) and from 3 to 50% by weight of a phosphorus-containing organic compound (D), the percentages in each case being based on the molding material.The molding material is used for the production of flameproofed moldings.

Abstract: A phosphine oxide composition represented by the formula: ##STR1## wherein P is phosphorus, O is oxygen, A is an alkylene chain of 2 to 12 carbon atoms, Z is a polar group, n is 1 or 2, and R is an ethylenically unsaturated alicyclic hydrocarbon or alcohol.

Abstract: This invention claims flame retardant polycarbonate resin compositions comprising an aromatic carbonate polymer and, as a novel flame retardant additive therefor, a phosphorus-containing polycarbonate composition produced by carrying out a polycarbonate condensation in which at least part of the diol compound is a bishydroxyalkylphosphine oxide. Also described are the novel flame retardants per se.

Abstract: Thermoplastic polymers, having antistatic properties, are obtained by incorporating in the polymers a liquid mixture of trialkylphosphine oxides.

Abstract: Cyclic phosphine oxides of the formula: ##STR1## wherein P is phosphorus, O is oxygen, A is an alkylene chain of 2 to 12 carbon atoms, Z is a polar group and R represents the carbon atoms in a phosphorus-containing ring formed by alkylating an ethylenically unsaturated cyclic hydrocarbon with phosphine.The cyclic phosphine oxides are useful as flame retardants for styrene modified polyphenylene ether resins.

Abstract: Mixed ether compositions containing oligomers of polyhydroxyalkyl phosphine oxide are prepared by heating a polyhydroxyalkyl phosphine oxide in the presence of an acid catalyst at temperatures within the range of from about 139.degree. C. to about 200.degree. C. and removing water from the reaction mixture. When the reaction is conducted in the presence of an aliphatic, cycloaliphatic or aromatic alcohol having one or more hydroxyl groups mixed phosphine oxide ethers of the added alcohol are formed. The mixed ether compositions of the present invention are useful fire retardant additives.

Abstract: The present invention provides novel flame retardant, non-dripping thermoplastic molding compositions of polyphenylene ether resins or acrylonitrile-butadiene-styrene copolymers which include a flame retardant agent, and polytetrafluoroethylene.