Abstract: Aromatic polyesters and polyestercarbonates based on diphenols and iso- and/or terephthalic acids become flame-proof if admixed with small quantities of ammonium or alkali metal salts of inorganic or organic acids and optionally halophthalimides and optionally polytetrafluoroethylene. The mechanical and chemical properties of the polyester (carbonates) remain unchanged.

Abstract: Polymer compositions containing minor proportions of polyvalent metal or amine salts of 5,5-bis-(bromomethyl)-2-hydroxy-2-oxo-1,3,2-dioxaphosphorinane. Aluminum, calcium and melamine salts are preferred.

Abstract: Light and heat stabilizers for synthetic resin compositions and synthetic resin compositions containing such stabilizers are provided, comprising(1) at least one hindered and heterocyclic amine having the formula: ##STR1## wherein: X is a bivalent linking radical forming with the ring structure ##STR2## a nitrogen-containing heterocyclic ring having from five to seven ring atoms, preferably piperidine;R.sub.1 and R.sub.2 are each selected from the group consisting of lower alkyl, preferably methyl, and R.sub.1 and R.sub.2 taken together as pentylene (CH.sub.2).sub.5 ;R.sub.3 and R.sub.4 are each selected from the group consisting of lower alkyl, and R.sub.3 and R.sub.4 taken together as one of butylene--(CH.sub.2).sub.4, pentylene--(CH.sub.2).sub.5, and CH.sub.2 --C(CH.sub.3).sub.2 --NH--C(CH.sub.3).sub.2 --CH.sub.2 --;n is 1 or 2; andwhen n is 1, Y is selected from the group consisting of hydrogen, O.degree.

Abstract: A composition comprising an aromatic carbonate polymer in admixture with an effective thermal stabilizing amount of a compound of formula ##STR1##

Abstract: Polyphenylene oxide blended with SAN or ABS polymers containing from 2 to 8% by weight of acrylonitrile have highly advantageous combination of strength and distortion temperature.

Abstract: Concentrates containing from 0.5% to 20% by weight of an alkali metal borohydride, balance essentially inert dry resinous polymer are added to plastics in amounts effective to reduce traces impurities and thereby result in improved heat and light stability.

Abstract: Disclosed is a self-extinguishing polystyrenic composition comprising a polystyrenic resin, a fire-retardant amount of a halogenated organic fire-retardant agent and a nitrogen-containing organic compound selected from the group consisting of amines, amides and ammonium compounds containing from 20 to 40 carbon atoms and their mixtures, said nitrogen-containing compound being used in an amount varying between 0.5 and 50% based on the weight of fire-retardant agent.

Abstract: A novel 2,2,6,6-tetramethyl-4-piperidyl substituted nitrogen heterocyclic ring compound is provided which is useful as a stabilizer for organic polymers. Organic polymers containing the novel 2,2,6,6-tetramethyl-4-piperidyl substituted nitrogen heterocyclic ring compound exhibit improved resistance to deterioration induced by light, by heat or by a combination of light and heat. The novel 2,2,6,6-tetramethyl-4-piperidyl substituted nitrogen heterocyclic ring compound is prepared by a novel method comprising the step of reacting 2,2,6,6-tetramethyl-4-piperidyl substituted 1,2-aliphatic diamine with a monoaldehyde or dialdehyde.

Abstract: Polymers of the following monomer ##STR1## wherein R and/or R.sup.1 contains a polymerizable double bond are disclosed as light stabilizers for polymers.

Abstract: The invention relates to thermoplastic moulding compositions based on polymers of vinyl chloride and containing 0.1 to 5% by weight of a 2-thio-6-aminouracil of the formula I ##STR1## wherein each of R.sup.1 and R.sup.2 independently is a hydrocarbon radical of 1 to 24 carbon atoms which can be substituted by --OH, --COOR.sup.4, --O(C.dbd.O)R.sup.4, --(C.dbd.O)R.sup.4, halogen or amino, and R.sup.3 is hydrogen, acyl of 2 to 24 carbon atoms or --(C.dbd.O)NHR.sup.4, while R.sup.4 is a hydrocarbon radical of 1 to 24 carbon atoms.

Abstract: Alkylated 1,1'-biphenyl-2,2'diyl phosphites are prepared by reacting alkylated 2,2'-biphenol with phosphorus trichloride in an organic solvent and then reacting the intermediate with an alcohol or thiol. Said phosphites are useful as stabilizers of organic polymers and lubricating oils, especially as process stabilizers for polyolefins, elastomers, polyesters and polycarbonates.

Abstract: An additive composition for improving the color stability of a vinyl chloride polymer stabilized with environmentally acceptable stabilizers comprises dehydroacetic acid or its Na, K., Li, Mg, Zn, Ba, Ca, Sn, or Sr salt and an organic phosphite having the formula ##STR1## wherein R.sub.1 is a t-butyl or t-amyl group, R.sub.2 is a hydrogen atom or an alkyl group having one to five carbon atoms, R.sub.3 is a hydrogen atom or a methyl group, and each of R.sub.4 and R.sub.5 independently is a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group having 5 to 20 carbon atoms, an aryl group having 6 to 12 carbon atoms, or an ether-substituted group having 3 to about 50 carbon atoms and 1 to about 40 ether oxygen atoms.

Abstract: Ultraviolet light stabilizers for polymers are disclosed.

Abstract: Phosphorous acid esters obtained by reacting bisphenols with phosphorous trihalogenide or triphosphite and optionally or mono- or polyhydroxy compound are especially useful for stabilizing polyamides.

Abstract: A stabilizer composition is disclosed that enhances the resistance to deterioration upon heating of vinyl chloride polymers. The stabilizer composition comprises (A) a metal salt of a nitrogen-free monocarboxylic acid or a phenol and (B) a hydrogen phosphite ester of an ortho-phenylethylidene-substituted phenol.Vinyl chloride polymer compositions stabilized with the above disclosed stabilizer composition are also disclosed.

Abstract: Use of N-substituted 2,2,6,6-tetraalkylpiperidine compounds, their acid addition salts or complexes with metal compounds, optionally together with further stabilizers, for stabilizing acid catalyzed stoving lacquers based on hot cross-linkable acrylic or alkyd resins against the action of light, moisture and oxygen.

Abstract: Particle occurrence in an aqueous jet ink from Sulfur Black 1 is greatly reduced by employing a Sulfur Black 1 completely oxidized at the solubilizing groups.

Abstract: Stabilized halogen-containing resin compositions having improved thermal stability and weather resistance comprising a halogen-containing resin and as a stabilizer, an organic phosphate ester having the general formula: ##STR1## wherein R.sub.1 to R.sub.4 are the same or different organic radicals, A represents hydrocarbon residue of polyhydric compound having 2 to 6 hydroxyl groups, m and n are each an integer of 1 to 3, and m+n is equal to the total number of hydroxyl groups in polyhydric compound.

Abstract: A synergistic stabilizer combination is provided for use in improving the resistance of polymers, such as olefin polymers and copolymers, to deterioration in physical properties upon exposure to heat. The stabilizer combination contains a quinoline compound, a diamine compound and a magnesium compound in correlated amounts. In addition, olefin polymer compositions such as an ethylene-vinyl acetate copolymer composition containing the synergistic stabilizer combination and a method for preparing the compositions are provided.

Abstract: The present invention relates to polycarbonate composition characterized in the absence therefrom of phosphites and boric acid esters which compositions are made stable and bright by the incorporation of organic silicon compounds in combination with oxetane, dioxane or tetrahydrofurane compounds.