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AssigneeChevron Chemical Company
InventorsJames H. Wang, David Rosendale, Victor P. Kurkov, Leslie P. Theard, Ta Y. Ching, Lewis R. Compton, Tor H. G. Palmgren, Mitchell P. Eichelberger
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Ionomer compositions which have improved optical properties are disclosed. These compositions comprise ionomers which can be represented as the polymerization product of alpha-olefins having from two to eight carbon atoms, esters of alpha, beta-ethylenically-unsaturated carboxylic acids, metal salts of acrylic and methacrylic acid, and optional alpha, beta-ethylenically-unsaturated comonomers which impart some desired polymer property or properties, such as acidity and/or solvent resistivity. Also disclosed are methods of making these ionomer compositions in a reactive extruder and treating the compositions with acid to impart acidity to the compositions or to only the surface of the compositions.
A composition comprising a copolymer of alpha-olefins having from two to eight carbon atoms, esters of alpha, beta-ethylenically-unsaturated carboxylic acids having from four to twenty-two carbon atoms, and metal salts of acrylic or methacrylic acid, wherein said copolymer has a haze of no more than ten percent as measured by ASTM method D 1003, wherein the composition is acidified.
Dependencies are inferred from the claim text.