Low application tempearature amorphous poly-α-olefin adhesive
AssigneeHenkel IP & Holding GmbH
InventorsYuhong Hu, Charles W. Paul, Darshak Desai, Salvador Alvarado
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Abstract
It has been discovered that amorphous polybutene copolymers that have a softening point of from about 70 to about 105° C. and viscosity of less than about 1,900 cP at 190° C. possesses desirable properties and may be used to make a low application temperature hot melt adhesive for disposable absorbent articles.
Claims13
A hot melt adhesive comprising at least 45 wt %, based on the adhesive, of an amorphous polybutene copolymer having (a) greater than about 50 wt % of 1-butene monomer, (b) a softening point of from about 70 to about 105° C. and (c) a viscosity of less than about 1,900 cP at 190° C., and (d) a tan δ value greater than 30 at 140° C.
- wherein the hot melt adhesive has a viscosity of less than about 6,000 cP at 150° C.
Dependencies are inferred from the claim text.