Spherical-shaped particles from ionomer resins and ethylene/carboxylic acid copolymer resins
AssigneeE. I. Du Pont de Nemours and Company
InventorsJohn Charles Gebhard, Jr., Marion Glen Waggoner, James Lang Webster
Life of this patent
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Abstract
Spherical-shaped particles having an average diameter of 10 to 100 microns and the surface thereof is covered with hemispherical-shaped bumps about 0.1 micron in diameter, the particles being a copolymer of alpha-olefins and alpha, beta-ethylenically unsaturated carboxylic acid having 3 to 8 carbon atoms, the copolymer having up to 90% of the carboxylic acid groups ionized by neutralization with metal ions. The particles form a free-flowing powder useful in preparing clear, protective, shatter-resistant coatings for glass, and protective coatings for metals and other material.
Claims8
Spherical-shaped particles having an average diameter of 10 to 100 microns, of a copolymer of (a) alpha-olefins of the formula R--CH.dbd.CH.sub.2, where R is a radical selected from the class consisting of hydrogen and alkyl radicals having from 1 to 8 carbon atoms, and (b) an alpha, beta-ethylenically unsaturated carboxylic acids having from 3 to 8 carbon atoms, said copolymer having from 0 to 90% of the carboxylic acid groups ionized by neutralization with metal ions, said metal ions having an ionized valence of from 1 to 3 inclusive when the unsaturated acid is a monocarboxylic acid and an ionized valence of one when the unsaturated acid is a dicarboxylic acid and said metal ions being selected from the group consisting of uncomplexed and complexed metal ions, said copolymer being a direct copolymer of the alpha-olefins and the unsaturated carboxylic acid in which the carboxylic acid groups are randomly distributed over all molecules and in which
- 1 the alpha-olefin content of the copolymer is at least 50 mol percent, based on the alpha-olefinacid copolymer,
- 2.
Dependencies are inferred from the claim text.