Abstract: Lubricants stabilized against oxidative degradation by the incorporation therein of N-thiomethylphenothiazine derivatives, as well as certain phenothiazines within the indicated group.

Abstract: Lubricants stabilized against oxidative degradation by the incorporation therein of N-thiomethylphenothiazine derivatives, as well as certain phenothiazines within the indicated group.

Abstract: (Hydroxyphenyl)phosphine derivatives of the formula ##STR1## are effective in stabilizing organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as process stabilizers in organic materials containing phenolic antioxidants.

Abstract: Substituted (4-hydroxyphenylthioalkyl) derivatives of the formula ##STR1## are prepared by the reaction of the appropriate ring and hydroxybenzene thiol compounds and are useful stabilizers of organic materials.

Abstract: Dibenzodioxaphosphepin and dibenzodioxaphosphocin derivatives are prepared by reacting selected 2,2'-biphenols with phosphorus trichloride in an organic solvent and then reacting the intermediate formed with a 1,4-dihydroxy-2,2,6,6-tetraalkylpiperidine. The phosphites formed are useful as stabilizers of organic polymers and lubricating oils, especially as process stabilizers for polyolefins, elastomers, polyesters and polycarbonates.

Abstract: An improved process for the preparation of 3,5-dialkyl-4-hydroxybenzoic acid comprising the reaction of 2,6-dialkylphenol and carbon dioxide in the presence of a mono- or polyalkylene glycol ether.

Abstract: Long chain (4-hydroxyphenyl) propanoate derivatives of the formula ##STR1## are effective in stabilizing organic materials against oxidative and thermal degradation.

Abstract: Substituted-(hydroxyphenyl)-pyrrolidine-2,5-dione derivatives of the formula ##STR1## are prepared by the reaction of the appropriate maleimide and phenolic compounds and are useful as stabilizers for organic polymers.

Abstract: Pentaerythritol diphosphites corresponding to the formula ##STR1## being useful for stabilizing organic materials against thermal, oxidative and actinic degradation and a process for the preparation thereof.

Abstract: Substituted (4-hydroxyphenylthioalkyl) derivatives of the formula ##STR1## are prepared by the reaction of the appropriate ring and hydroxybenzene thiol compounds and are useful stabilizers of organic materials.

Abstract: The title compounds correspond to the formula ##STR1## and are useful as stabilizers for organic polymers and lubricating oils to counteract the degradative effects of heat, light and air.

Abstract: Compounds of the formulae I and II ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are independently hydrogen, alkyl of 1 to 18 carbon atoms, cycloalkyl of 5 to 8 carbon atoms, phenyl, phenyl substituted by alkyl of 1 to 18 carbon atoms, aralkyl of 7 to 9 carbon atoms or said aralkyl substituted by alkyl of 1 to 12 carbon atoms,R.sup.6 and R.sup.7 are independently alkyl having 1 to 30 carbon atoms, cycloalkyl of 5 to 8 carbon atoms, phenyl, phenyl substituted by alkyl of 1 to 18 carbon atoms, aralkyl of 7 to 9 carbon atoms or said aralkyl substituted by alkyl of 1 to 12 carbon atoms;A is a direct bond, a methylene or an ethylene radical,B is an alkanediyl radical of 2 to 10 carbon atoms, the radical of formula --CH.sub.2 CH.sub.2 --S--CH.sub.2 CH.sub.2 -- or of the formula III--CH.sub.2 CH.sub.2 --(O--CH.sub.2 CH.sub.2).sub.

Abstract: Rigid polyvinyl chloride containing reduced amounts of titanium dioxide and a tin mercaptide thermal stabilizer, said polyvinyl chloride being stabilized against the adverse effects of ultraviolet radiation by the addition thereto of effective amounts of benzoate compounds.

Abstract: Organic materials are stabilized against thermal, oxidative and photo-degradation by incorporating therein an effective amount of a compound of formula I ##STR1## wherein T.sub.1 and T.sub.2 independently are alkyl, cycloalkyl, phenyl, aralkyl, T.sub.2 may also be hydrogen, T is alkyl, phenyl or substituted hydroxyphenyl, E is a direct bond, alkylene, cycloalkylene, phenylene or --CH.sub.2 CH(ST)CH.sub.2 --, T.sub.3 and T.sub.4 are independently hydrogen, alkyl or cycloalkyl; or together are alkylene, T.sub.5 is hydrogen, alkyl or phenyl, n is 1 or 2, t is 0 or 1, and t is 2-n. Polyolefins, ABS resins, natural and synthetic rubbers and polyesters are particularly well stabilized by the compounds of formula I.

Abstract: Bis(substituted thioalkyl)hydroxylamine derivatives are effective in stabilizing polyolefin compositions containing a stabilizer or mixture of stabilizers selected from the group consisting of the phenolic antioxidants, the hindered amine light stabilizers, the alkylated hydroxybenzoate light stabilizers, the ultraviolet light absorbers, the organic phosphorus compounds, the alkaline metal salts of fatty acids and the thiosynergists, against degradation upon high temperature extrusion, exposure to the combustion products of natural gas, gamma irradiation or upon storage for extended periods.

Abstract: Hydroxyphenylthio-substituted phosphites of the formula ##STR1## prepared by the reaction of the appropriate phosphorus and phenol compounds, said phosphites being useful as stabilizers of organic polymers and lubricating oils to counteract the degradative effects of light, heat and air.

Abstract: Hindered silane compounds of the formula ##STR1## are prepared by the reaction of the appropriate silane and phenol compounds, said hindered silanes being useful as stabilizers of organic polymers such as polyolefins, vinyl halide polymers, elastomers, polyesters and polycarbonates.

Abstract: Organic materials are stabilized against thermal, oxidative and photo-degradation by incorporating therein an effective amount of a compound of formula I ##STR1## wherein T.sub.1 T.sub.2 independently are alkyl, cycloalkyl, phenyl, aralkyl, T.sub.2 may also be hydrogen, T is alkyl, phenyl or substituted hydroxyphenyl, E is a direct bond, alkylene, cycloalkylene, phenylene or --CH.sub.2 CH(ST)CH.sub.2 --, T.sub.3 and T.sub.4 are independently hydrogen, alkyl or cycloalkyl; or together are alkylene, T.sub.5 is hydrogen, alkyl or phenyl, n is 1 or 2, t is 0 or 1, and t is 2-n. Polyolefins, ABS resins, natural and synthetic rubbers and polyesters are particularly well stabilized by the compounds of formula I.

Abstract: The title compounds correspond to the formula ##STR1## where n is 1 and are characterized in that at least one of A, X or Y contains a group of formula ##STR2## these compounds being useful as stabilizers for organic polymers and lubricating oils to counteract the degradative effects of heat, light and air.

Abstract: Rigid polyvinyl chloride containing reduced amounts of titanium dioxide and a tin mercaptide thermal stabilizer, said polyvinyl chloride being stabilized against the adverse effects of ultraviolet radiation by the addition thereto of effective amounts of mono- and dibenzoate compounds.