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US 6,899,958 B2Granted
Moisture barrier resins
AssigneeEncap Technologies Inc.
InventorRobert G. Bayless
Life of this patent
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Abstract
Moisture barrier resins comprising a film-forming, cross-linkable, partially hydrolyzed polymer and a cross-linking agent provide improved impermeability to moisture and extended release capabilities for various particles, substances and other core materials that are encapsulated with compositions which contain these resins.
Claims9
A cross-linked film formed from a moisture-barrier resin comprising a mixture of;
- (a) a film-forming, cross-linkable, partially hydrolyzed polymer;
- and
- (b) a cross-linking agent;
- wherein the polymer is hydrolyzed from about 44 to about 46 percent.
1 more element
A moisture-barrier resin comprising a mixture of:
- (a) a film-forming, cross-linkable, partially hydrolyzed polymer;
- and
- (b) a cross-linking agent;
- wherein the polymer comprises poly (ethylene-vinyl acetate) having a melt index of about 35 to about 37 and having about 44 to about 46 percent of the vinyl acetate groups hydrolyzed to vinyl alcohol groups.
1 more element
Dependencies are inferred from the claim text.