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US 2001/0043994 A1Published application
Method of priming polyolefin articles for coating
AssigneeHoechst Trespaphan GmbH
InventorsMichael A. Hubbard, James A. McCaulley, Douglas R. Holcomb
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Abstract
A method for providing a waterborne, inorganic barrier coating to a polyolefin substrate is described. The method involves applying a primer composition containing a vinyl polymer, wherein at least 75% of the polymer repeat units contain side groups having hydroxyl moieties, to the substrate. This primer coating facilitates the application and binding of the subsequently applied barrier coating composition to the substrate.
Claims34
A barrier-coated polyolefin article comprising:
- (a) a polyolefin substrate;
- (b) a primer layer containing a random vinyl polymer comprised of repeat units, wherein at least 75% of said polymer repeat units contain side groups having hydroxyl moieties;
- and
- (c) an inorganic barrier layer applied from a waterborne coating solution.
1 more element
A method for providing a barrier coating to a polyolefin substrate comprising the steps of:
- (a) applying to said substrate a primer layer containing a random vinyl polymer comprised of repeat units, wherein at least 75% of said polymer repeat units contain side groups having hydroxyl moieties;
- (b) allowing the primer layer to dry;
- and
- (c) applying a waterborne coating solution which forms a dry inorganic barrier layer over the dried primer layer.
1 more element
Dependencies are inferred from the claim text.