Shoe lasting adhesive
AssigneeE. I. Du Pont de Nemours and Company
InventorEdward McBride
Life of this patent
Estimating the term…
Abstract
A hot-melt adhesive for use as a shoe last adhesive, particularly one in a form for use in a direct through feed adhesive dispensing system, made from a melt-blend of a copolymer of ethylene and carboxylic acid, a synthetic wax such as a Fischer-Tropsch wax, and an ethylene/unsaturated carboxylic acid wax having a melt index of at least about 5000 dg/min.
Claims20
A hot melt adhesive consisting essentially of a melt blend of the following components:
- (a) a copolymer of ethylene with an unsaturated carboxylic acid selected from the group consisting of acrylic acid and methacrylic acid having a melt index of about 100 dg/min. to about 2000 dg/min. determined according to ASTM 1238 Condition E;
- (b) a synthetic wax selected from the group consisting of Fischer-Tropsch wax, polyethylene wax, and their oxidized counterparts;
- and
- (c) a high-melt-index copolymer of ethylene with an unsaturated carboxylic acid selected from the group consisting of acrylic acid and methacrylic acid, the high-melt-index copolymer having a melt index of at least about 5,000 dg/min. determined according to ASTM 1238 Condition E.
A solid flexible thermoplastic adhesive in the form of a rod, strip, strand, for use in a direct through feed adhesive dispensing system consisting essentially of a melt blend of the following components:
- (a) a copolymer of ethylene with an unsaturated carboxylic acid selected from the group consisting of acrylic acid and methacrylic acid having a melt index of about 100 dg/min. to about 2000 dg/min. determined according to ASTM 1238 Condition E;
- (b) a synthetic wax selected from the group consisting of Fischer-Tropsch wax, polyethylene wax, and their oxidized counterparts;
- and
- (c) a high-melt-index copolymer of ethylene with an unsaturated carboxylic acid selected from the group consisting of acrylic acid and methacrylic acid, the high-melt-index copolymer having a melt index of at least about 5,000 dg/min. determined according to ASTM 1238 Condition E.
Dependencies are inferred from the claim text.