Three-component polymeric coating for glass substrate
AssigneeOwens-Illinois, Inc.
InventorsJohn W. Tobias, Lynn J. Taylor
Life of this patent
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Abstract
In accordance with this invention, a 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 UV light or another form of energy. The polymeric coating composition contains at least three basic components: (1) at least one rubbery thermoplastic organic polymer; (2) at least one organic photosensitizer; and (3) at least one polymerizable ethylenically unsaturated monomer having a functionality of at least two.
Claims16
A process for forming a protective film on the surface of a glass container having an impermeable non-porous glass surface which comprises;
- applying a polymeric crosslinkable coating composition to the glass container surface, the coating composition comprising about 70% to 98.99% by weight of at least one rubbery thermoplastic organic polymer having an ultimate elongation of at least 100%, about 0.01% to 10% by weight of at least one organic photosensitizer which becomes photoreactive upon exposure to light in the ultraviolet spectrum, and about 1% to 29.99% by weight of at least one polymerizable ethylenically unsaturated monomer having at least two carbon-carbon double bonds,
- and applying ultraviolet radiation to the polymeric composition in situ on the container surface so as to crosslink the composition and form a protective scratch- and abrasion-resistant polymeric film.
As an article of manufacture, a glass container having an impermeable non-porous glass surface at least partially coated with a protective scratch- and abrasion-resistant polymeric film having a thickness sufficient to resist glass shattering of the container under pressure, the crosslinked film having been formed in situ on the surface of the glass container from a composition comprising about 70% to 98.99% by weight of at least one rubbery thermoplastic organic polymer having an ultimate elongation of at least 100%, about 0.01% to 10% by weight of at least one organic photosensitizer which becomes photoreactive upon exposure to light in the ultraviolet spectrum, and about 1% to 29.99% by weight of at least one polymerizable ethylenically unsaturated monomer having at least two carbon-carbon double bonds.
A process for forming a protective film on the surface of a glass container having an impermeable non-porous glass surface which comprises;
- applying a polymeric crosslinkable coating composition to the glass container surface, the coating composition consisting essentially of about 70% to 98.99% by weight of at least one rubbery thermoplastic organic polymer having an ultimate elongation of at least 100%, about 0.01% to 10% by weight of at least one organic photosensitizer which becomes photoreactive upon exposure to light in the ultraviolet spectrum, and about 1% to 29.99% by weight of at least one polymerizable ethylenically unsaturated monomer having at least two carbon-carbon double bonds,
- and applying ultraviolet radiation to the polymeric composition in situ on the container surface so as to crosslink the composition and form a protective scratch- and abrasion-resistant polymeric film.
As an article of manufacture, a glass container having an impermeable non-porous glass surface at least partially coated with a protective scratch- and abrasion-resistant polymeric film having a thickness sufficient to resist glass shattering of the container under pressure, the crosslinked film having been formed in situ on the surface of the glass container from a composition consisting essentially of 70% to 98.99% by weight of at least one rubbery thermoplastic organic polymer having an ultimate elongation of at least 100%, about 0.01% to 10% by weight of at least one organic photosensitizer which becomes photoreactive upon exposure to light in the ultraviolet spectrum, and about 1% to 29.99% by weight of at least one polymerizable ethylenically unsaturated monomer having at least two carbon-carbon double bonds.
Dependencies are inferred from the claim text.