Extending the molten stability of poly (ethylene-vinyl acetate) hot-melt adhesives by addition of lithium metal ion
AssigneeUnion Camp Corporation
InventorSamuel D. Hollis
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Abstract
The disclosure is of a method for extending the molten stability of hydrocarbon resin tackified ethylene-vinyl acetate (EVAc) copolymers. One embodiment of the method comprises mixing a lithium salt in the adhesive compositions. The disclosure is also of EVAc-based hot-melt adhesive compositions prepared by the method of the invention and characterized in part by their stability in the molten state.
Claims9
A method of increasing the molten stability of ethylene-vinyl acetate copolymer hot-melt adhesive compositions containing hydrocarbon resin tackifier and at least one antioxidant compound, which comprises;
- mixing with said compositions a stabilizing proportion of a soluble lithium metal ion.
A hot-melt adhesive composition, which comprises an ethylene-vinyl acetate copolymer base, a hydrocarbon resin tackifier, at least one antioxidant compound and lithium metal ion.
Dependencies are inferred from the claim text.