Abstract: Acid-curable thermoset enamel compositions coming in contact with copper or copper-containing alloys are discolored and degrade more rapidly due to leaching of copper into the compositions. The presence of small amounts of benzotriazole or tolutriazole effectively prevents the discoloration and concomitantly retards degradation.

Abstract: Esters and urethanes of certain polydialkylsiloxanepolyoxyalkylene block and graft copolymers which impart high voltage stabilization to dielectric olefin polymers, the stabilized olefin polymer insulating materials resulting therefrom and electric wire or cable insulated therewith.

Abstract: Insulating material for electric wire and cable which consists of an olefin polymer stabilized against electrical failure resulting from voltage stress by the presence therein of a polydialkylsiloxanepolyoxyalkylene block or graft copolymer, the electric wire coated with said insulating material and a method for stabilizing said insulation.

Abstract: Alpha-cyanocinnamate ultraviolet-absorbing stabilizers of the formula ##STR1## Where T is alkyl of 4 to 14 carbon atoms, and R.sub.4 is alkyl of 1 to 4 carbon atoms, are particularly resistant to loss during weathring of outdoor thermoset or thermoplastic coating systems while exhibiting good stabilization efficacy and compatibility in said systems.

Abstract: Ultraviolet-absorbing stabilizers of the formula E--(G--R).sub.n, L--(G--E).sub.m, or [G--E.sub.1 --G--Q].sub.p where E is a radical derived from an oxanilide, benzalmalonate, .alpha.-cyanocinnamate or o-hydroxyphenylbenzotriazole, E.sub.1 is a radical derived from an oxanilide, G is --OCH.sub.2 CHOH--, R is alkyl, phenyl or --CH.sub.2 OT where T is alkyl or alkenyl, n is 1 or 2, m is 2 or 3, L is a direct bond, alkylene or other bis or tris radical, Q has the same meaning as L when m is 2, and p is 1 to 4, are particularly resistant to loss during weathering of outdoor thermoset or theromplastic coating systems while exhibiting good stabilization efficacy and compatibility in said systems.

Abstract: Alpha-cyanocinnamate ultraviolet-absorbing stabilizers of the formula ##STR1## where T is alkyl of 4 to 14 carbon atoms, and R.sub.4 is alkyl of 1 to 4 carbon atoms, are particularly resistant to loss during weathering of outdoor thermoset or thermoplastic coating systems while exhibiting good stabilization efficacy and compatibility in said systems.

Abstract: Ultraviolet-absorbing stabilizers of the formula E-(G-R).sub.n, L-(G-E).sub.m, or [G-E.sub.1 -G-Q].sub.p where E is a radical derived from an oxanilide, benzalmalonate, .alpha.-cyanocinnamate or o-hydroxyphenylbenzotriazole, E.sub.1 is a radical derived from an oxanilide, G is --OCH.sub.2 CHOH--, R is alkyl, phenyl or --CH.sub.2 OT where T is alkyl or alkenyl, n is 1 or 2, m is 2 or 3, L is a direct bond, alkylene or other bis or tris radical, Q has the same meaning as L when m is 2, and p is 1 to 4, are particularly resistant to loss during weathering of outdoor thermoset or thermoplastic coating systems while exhibiting good stabilization efficacy and compatibility in said systems.

Abstract: Ultraviolet-absorbing stabilizers of the formula E-(G-R).sub.n, L-(G-E).sub.m, or [G-E.sub.1 -G-Q].sub.p where E is a radical derived from an oxanilide, benzalmalonate, .alpha.-cyanocinnamate or o-hydroxphenylbenzotriazole, E.sub.1 is a radical derived from an oxanilide, G is --OCH.sub.2 CHOH--, R is alkyl, phenyl or --CH.sub.2 OT where T is alkyl or alkenyl, n is 1 or 2, m is 2 or 3, L is a direct bond, alkylene or other bis or tris radical, Q has the same meaning as L when m is 2, and p is 1 to 4, are particularly resistant to loss during weathering of outdoor thermoset or thermoplastic coating systems while exhibiting good stabilization efficacy and compatibility in said systems.

Abstract: 2-[2-Hydroxy-3,5-di-tert-octylphenyl]-2H-benzotriazole exhibits outstanding efficacy in protecting organic substrates from light induced deterioration as well as good resistance to loss by volatilization or exudation during the high temperature processing of stabilized compositions.

Abstract: 2-[2-Hydroxy-3,5-di-tert-octylphenyl]-2H-benzotriazole exhibits outstanding efficacy in protecting organic substrates from light induced deterioration as well as good resistance to loss by volatilization or exudation during the high temperature processing of stabilized compositions.This stabilizer and its 5-chloro analog exhibit great resistance to volatilization, enhanced solubility in selected solvents, desirable absorption characteristics in the ultraviolet range and photographic inertness. This combination of properties makes these benzotriazoles particularly useful in photographic compositions especially in protecting color dye images against the harmful effects of ultraviolet light.

Abstract: Ultraviolet-absorbing stabilizers of the formula E-(G-R).sub.n, L-(G-E).sub.m, or [G-E.sub.1 -G-Q].sub.p where E is a radical derived from an oxanilide, benzalmalonate, .alpha.-cyanocinnamate or o-hydroxyphenylbenzotriazole, E.sub.1 is a radical derived from an oxanilide, G is --OCH.sub.2 CHOH--, R is alkyl, phenyl or --CH.sub.2 OT where T is alkyl or alkenyl, n is 1 or 2, m is 2 or 3, L is a direct bond, alkylene or other bis or tris radical, Q has the same meaning as L when m is 2, and p is 1 to 4, are particularly resistant to loss during weathering of outdoor thermoset or thermoplastic coating systems while exhibiting good stabilization efficacy and compatibility in said systems.

Abstract: 2-[2-Hydroxy-3,5-di-tert-octylphenyl]-2H-benzotriazole exhibits outstanding efficacy in protecting organic substrates from light induced deterioration as well as good resistance to loss by volatilization or exudation during the high temperature processing of stabilized compositions.This stabilizer and its 5-chloro analog exhibit great resistance to volatilization, enhanced solubility in selected solvents, desirable absorption characteristics in the ultraviolet range and photographic inertness. This combination of properties makes these benzotriazoles particularly useful in photographic compositions especially in protecting color dye images against the harmful effects of ultraviolet light.

Abstract: The title compounds are prepared by reacting alkylated 1,1'-biphenyl-2,2'-diol or alkylated 2,2'-alkylidene-bis-phenol with phosphorus trichloride in an organic solvent and then reacting the intermediate phosphorochlorodite with an alkanolamine. Said phosphites are useful as stabilizers of organic polymers and lubricating oils, especially as processing stabilizers for polyolefins, elastomers, polyesters and polycarbonates.

Abstract: Substituted 2-nitro-2'-hydroxyazobenzenes are prepared by adding an aqueous mineral acid solution of a diazotized o-nitroaniline to a strongly alkaline lower alkanol or aqueous lower alkanol solution of a substituted phenol, containing sufficient alkali metal hydroxide to assure a pH value substantially over 11 and an excess of hydroxyl ion in the reaction mixture even after all the acidic diazonium salt solution is added, wherein the reaction solvent mixture is at least 50% by weight of lower alkanol, at a reaction temperature between -15.degree. C. and +30.degree. C.The o-nitroazobenzenes obtained are intermediate products useful in the manufacture of benzotriazole UV absorbers.

Abstract: The title compounds are prepared by reacting alkylated 1,1'-biphenyl-2,2'-diol or alkylated 2,2'-alkylidene-bis-phenol with phosphorus trichloride in an organic solvent and then reacting the intermediate phosphorochlorodite with an alkanolamine. Said phosphites are useful as stabilizers of organic polymers and lubricating oils, especially as processing stabilizers for polyolefins, elastomers, polyesters and polycarbonates.

Abstract: 2-[2-Hydroxy-3,5-di-(.alpha.,.alpha.-dimethylbenzyl)phenyl]-2H-benzotriazol e exhibits outstanding efficacy in protecting organic substrates from light induced deterioration as well as good resistance to loss by volatilization or exudation during the high temperature processing of stabilized compositions. The combination of the benzotriazole UV absorber with a hindered amine light stabilizer is particularly efficacious in protecting thermoset and thermoplastic acrylic resin automotive finishes and enamels.

Abstract: 2-[2-Hydroxy-3,5-di-tert-octylphenyl]-2H-benzotriazole exhibits outstanding efficacy in protecting organic substrates from light induced deterioration as well as good resistance to loss by volatilization or exudation during the high temperature processing of stabilized compositions.

Abstract: 2-[2-Hydroxy-3,5-di-tert-octylphenyl]-2H-benzotriazole exhibits outstanding efficacy in protecting organic substrates from light induced deterioration as well as good resistance to loss by volatilization or exudation during the high temperature processing of stabilized compositions.The combination of the benzotriazole UV absorber with a hindered amine light stabilizer is particularly efficacious in protecting thermoset and thermoplastic acrylic resin automotive finishes and enamels.

Abstract: 2-[2-Hydroxy-3,5-di-(.alpha.,.alpha.-dimethylbenzyl)phenyl]-2H-benzotriazol e exhibits outstanding efficacy in protecting organic substrates from light induced deterioration as well as good resistance to loss by volatilization or exudation during the high temperature processing of stabilized compositions. The combination of the benzotriazole UV absorber with a hindered amine light stabilizer is particularly efficacious in protecting thermoset and thermoplastic acrylic resin automotive finishes and enamels.

Abstract: Substituted 2-nitro-2'hydroxyazobenzenes are prepared by adding an aqueous mineral acid solution of a diazotized o-nitroaniline to a strongly alkaline lower alkanol or aqueous lower alkanol solution of a substituted phenol, containing sufficient alkali metal hydroxide to assure a pH value substantially over 11 and an excess of hydroxyl ion in the reaction mixture even after all the acidic diazonium salt solution is added, wherein the reaction solvent mixture is at least 50% by weight of lower alkanol, at a reaction temperature between -15.degree. C. and +30.degree. C.The o-nitroazobenzenes obtained are intermediate products useful in the manufacture of benzotriazole UV absorbers.