Mobil Oil Corporation

Robert H Steiner

Robert E Touhsaent

Gary L Duncan

Leland L Liu

In a heat sealable coating composition for application to a polymer film wherein the composition contains (a) a film-forming aqueous latex based on an interpolymer or blend one or more acrylate esters and, optionally, one or more alpha, beta ethylenically unsaturated carboxylic acids, (b) inorganic particulate hot slip agent and (c) wax-containing cold slip agent, an improvement is provided which comprises the presence therein of such an aqueous latex in which the average particle size of the interpolymer component is from about 0.03 to about 0.5 microns.

Heat sealable aqueous latex coating composition for polymer film

The present invention relates to thermoplastic films such as polypropylene and more particularly to bi-axially oriented polypropylene which are characterized by having excellent anti-static properties and good resistance to the transmission of oxygen and moisture vapor. These properties are achieved by the application of a thin primer layer containing poly (ethylenimine) to corona discharge treated oriented polypropylene film followed by the application of an aqueous dispersion of a vinylidene chloride multipolymer containing a water soluble polyol such as a low molecular weight glycol or a poly (ethylene oxide) adduct of a nonpolar molecule.

Thermoplastic coated films with anti-static properties

Thermoplastic films, such as polypropylene, are coated with a vinylidene chloride based multipolymer to enhance the physical properties of such films. The coating is anchored to the base film by first applying a primer coating directly on the film surface, which primer coating comprises a water dispersed epoxy resin composition.

Polypropylene film with primer of a water dispersed epoxy resin coating

A multipolymer coating composition particularly adapted for coating thermoplastic film substrates, comprising an interpolymer of (a) vinylidene chloride, (b) an alkyl acrylate such as methyl acrylate and (c) methacrylic acid or mixtures thereof with acrylic acid.

Coating compositions and thermoplastic film substrates coated therewith

A coating composition to improve the physical characteristics of thermoplastic films, such as oriented polypropylene, comprising (1) an acrylic terpolymer of methyl methacrylate, methyl acrylate, and methacrylic acid; and (2) an aqueous-alkali soluble rosin, comprising an adduct of rosin with an alpha-beta unsaturated dicarboxylic acid esterified with a polyhydric alcohol.

Growing community of inventors

Rochester, NY, United States of America

Robert H Steiner