Polymeric coating for protection of glass substrate
AssigneeOwens-Illinois, Inc.
InventorsWilliam Lenard, Lynn J. Taylor
Life of this patent
Estimating the term…
Abstract
In accordance with this invention, a basic three-component chemically convertible polymeric coating composition is applied to the surface of a glass substrate and subsequently converted to a crosslinked coating by the application of heat or another form of energy. The polymeric coating composition contains at least three essential ingredients: 1. a rubbery thermoplastic organic polymer; 2. an organic peroxide or hydroperoxide; and 3. a polymerizable ethylenically unsaturated monomer having a functionality of at least two.
Claims3
As an article of manufacture, a glass container at least partially coated with a single protective polymeric film having a thickness of at least 0.002 inch and sufficient to resist glass shattering of the container under pressure, the crosslinked film having been formed in situ on the glass container from a composition consisting of about 70% to about 98.99% by weight of at least one rubbery thermoplastic organic polymer, about 0.01% to about 10% by weight of at least one peroxidic organic compound, and about 1% to about 29.99% by weight of at least one polyfunctional monomer;
- said polymer being an elastomeric organic polymer having an ultimate elongation of at least 100%, being crosslinkable and being selected from the group consisting of ethylene-vinyl acetate copolymers, hydrolyzed ethylene-vinyl acetate copolymers, ethylene-ethyl acrylate copolymers, ethylene-acrylic acid copolymers and their salts, ethylene-propylene copolymers, styrene-butadiene copolymers including both block and random copolymers, styrene-isoprene copolymers, acrylonitrile-butadiene copolymers, isobutylene-isoprene copolymers, polyurethane thermoplastic polyesters, ethylene-propylene-diene terpolymers, styrene-ethylene-butylene block terpolymers, polypentenamers, and polyamides derived from a dimer acid;
- said peroxidic organic compound possessing at least one oxygen-oxygen bond;
- and said polyfunctional monomer being a polymerizable ethylenically unsaturated monomer having a functionality of at least two.
Dependencies are inferred from the claim text.