Compounds of the formula: ##SPC1## Wherein R.sub.1 and R.sub.2 are each branch-chain alkyl of 3 to 8 carbon atoms and R.sub.3 and R.sub.4 are each hydrogen, alkyl of 1 to 18 carbon atoms, or cycloalkyl of 5 or 6 carbon atoms are useful as light stabilizers in polyolefins. They may be prepared (a) by reacting the 3,5-di-alkyl-4-hydroxybenzoyl chloride with the appropriate amine in the presence of an acid acceptor or (b) by reacting the corresponding benzoic acid with the appropriate amine in the presence of a carbodiimide as dehydrating agent.
Compounds in which 2,6-di(t-butyl)phenol is substituted in the 4 position by an N-substituted carboxamido group have valuable pharmacological activity as anti-inflammatory agents.
Elastomers and plastic polymers are protected against deterioration by certain new substituted haloacetamide antioxidants which are non-migratory and resist extraction by oils and solvents, of the type ##STR1## e.g., 4-anilino-2,2,2-trichloroacetanilide protects NBR even after sequential exposure to oil and to air at elevated temperature.
Materials and methods are shown for increasing the antioxidant protection of polyolefin insulation, such as low density polyethylene insulation on electrical conductors. The materials may be applied in the field to increase the service life of in-place cable. The material is typically applied by brushing or spraying a lacquer-based carrier containing the inventive stabilizer onto the insulation to be protected. The stabilizer migrates into the polyolefin insulation, typically increasing the service life of antioxidant depleted cable by several years.
Compounds in which 2,6-di(t-butyl)phenol is substituted in the 4 position by an acyl group have valuable pharmacological activity as anti-inflammatory agents. This is a continuation of application Ser. No. 797,138 filed May 16, 1977 now abandoned.
The present invention relates to a dryer-added fabric treatment article of manufacturing to reduce the fading of fabrics from sunlight comprising: I. a composition comprising: A. from about 5% to about 75%, by weight of the composition, of a sun-fade protection active selected from the group consisting of: i. a non-fabric staining, light stable, antioxidant compound preferably containing at least one C.sub.8 -C.sub.22 hydrocarbon fatty organic moiety; ii. a non-fabric staining, light stable, sunscreen compound; and iii. mixtures thereof; B. from about 10% to about 95% by weight of the composition of a fabric conditioning compound; and II. a substrate, on which said composition is attached, which provides for release of an effective amount of said sun-fade protection active and said fabric conditioning compound onto fabrics in an automatic laundry dryer at automatic laundry dryer operating temperatures; wherein said antioxidant compound is a solid having a melting point of less than about 80.degree. C., or a liquid at a temperature of less than about 40.degree. C.; and wherein said sunscreen compound absorbs light at a wavelength of from about 290 nm to about 450 nm and is a solid compound having a melting point of from about 25.degree. C. to about 90.degree. C., or a viscous liquid at a temperature of less than about 40.degree. C.
