Phillips Petroleum Company

Kenneth R Mills

Kenneth W Willcox

The addition of at least one anti-haze agent selected from the group consisting of saturated fatty acid amides, unsaturated fatty acid amides, unsaturated fatty acid amides, tertiary alkanolamines, hydrocarbyl sulfates and alkyl benzene sulfonates to a nitrite-containing copolymer of a conjugated diene and a monovinyl-substituted aromatic hydrocarbon monomer provide novel compositions which give reduced haze formation when subjected to molding conditions.

Antihaze compositions and process

A method for treating polymers of ethylene which have been stabilized with hindered phenolic stabilizer to reduce the discoloration produced upon processing the stabilized polymer at elevated temperature wherein before completion of the processing at elevated temperature there is admixed with the stabilized polymer compositions at least one compound chosen from the group consisting of aliphatic hydroxy compounds and epoxy-containing compounds. In a preferred embodiment, the polymer of ethylene and aliphatic hydroxy compound are further admixed with water. In another embodiment of the invention the aliphatic hydroxy compounds contain from 1 to 4 hydroxyl groups and are water soluble. A treated polymer of ethylene stabilized with hindered phenolic stabilizer that has been admixed with a compound chosen from the group consisting of aliphatic hydroxy compounds and epoxy-containing compounds. A composition of matter comprising a polymer of ethylene, hindered phenolic stabilizer, aliphtic hydroxy compound, and water.

Treating polymers of ethylene

Glycerides of higher fatty acids have been found to be effective as a discoloration inhibitor in very low concentrations for polyolefins.

Stabilized polyolefin compositions

Ultraviolet light stabilizer combinations for polymeric materials are provided by mixing zinc oxide, a zinc dihydrocarbyldithiocarbamate and a nickel compound selected from the group consisting of nickel dikydrocarbyldithiocarbamate, a nickel phosphonte and a nickel amine complex of 2,2'-thio-bis(p-alkylphenol). Also provided are stabilized polymeric compositions comprising solid polymers of 1-olefins and the above stabilizer combinations.

Ultraviolet light stabilizer combination for polymers

The addition of a minor amount of distearyl pentaerythritol diphosphite to olefin polymers containing 2-hydroxy-4-n-octoxybenzophenone as the ultraviolet stabilizer increases the ultraviolet resistance of the polyolefins. Olefin polymers containing these stabilizers can be used in the production of items that will be brought into contact with food products.

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Bartlesville, OK, United States of America

Kenneth R Mills