Coated articles
AssigneeDuPont Teijin Films U.S. Limited Partnership
InventorsChen Zhao, David Volsin, Cornell Chappell, Jr.
Life of this patent
Estimating the term…
Abstract
A coated article includes a substrate having on its surface a coating that includes a polymer selected from the group consisting of hydroxypropylcellulose, poly(2-ethyl-2-oxazoline) and mixtures of these, a surfactant, colloidal silica, and a crosslinker selected from the group consisting of water-soluble titanium salts and water-soluble or water-dispersible organic crosslinkers. The coating may be formed by applying a dispersion of the coating composition in a diluent to the substrate and subsequently drying the coated substrate to evaporate the diluent.
Claims12
A composite film comprising a polyester film substrate having first and second sides, and on at least one of said first and second sides a coating comprising a polymer selected from the group consisting of hydroxypropylcellulose, poly(2-ethyl-2-oxazoline) and mixtures of these, a surfactant, colloidal silica, and an ammonia salt of a styrene maleic anhydride copolymer partial monoester.
A method of making a composite film, comprising the steps of:
- a) providing an unoriented or monoaxially oriented polyester film substrate having first and second sides;
- b) forming on at least one of said first and second sides coating comprising a polymer selected from the group consisting of hydroxypropylcellulose, poly(2-ethyl-2-oxazoline) and mixtures of these, a surfactant, colloidal silica, and an ammonia salt of a styrene maleic anhydride copolymer partial monoester, said forming comprising contacting said at least one side with a dispersion of the polymer, surfactant, colloidal silica and ammonia salt of a styrene maleic anhydride copolymer partial monoester in an aqueous diluent and then evaporating the aqueous diluent;
- and
- c) subsequent to step b), stretching the unoriented or monoaxially oriented polyester film substrate to respectively monoaxially or biaxially orient the substrate.
A polymeric or glass article having on a surface thereof a coating comprising a polymer selected from the group consisting of hydroxypropylcellulose, poly(2-ethyl-2-oxazoline) and mixtures of these, a surfactant, colloidal silica, and an ammonia salt of a styrene maleic anhydride copolymer partial monoester.
A composition for coating an article, wherein the composition comprises, in an aqueous diluent, a dispersion comprising a polymer selected from the group consisting of hydroxypropylcellulose, poly(2-ethyl-2-oxazoline) and mixtures of these, a surfactant, colloidal silica, and an ammonia salt of a styrene maleic anhydride copolymer partial monoester.
A coating comprising a polymer selected from the group consisting of hydroxypropylcellulose, poly(2-ethyl-2-oxazoline) and mixtures of these, a surfactant, colloidal silica, and an ammonia salt of a styrene maleic anhydride copolymer partial monoester.
Dependencies are inferred from the claim text.