Hot melt adhesive
View Patent ↗Hot melt adhesives that contain an N-alpha olefin wax have substantially improved open times.
1. A hot melt adhesive comprising an ethylene vinyl acetate copolymer or an ethylene n-butyl acrylate copolymer, an N-alpha olefin wax and a tackifier, said wax having a melting point of from about 120° F. to about 175° F.
2. The adhesive of claim 1 comprising at least one other wax component.
3. The adhesive of claim 1 comprising from about 1 wt % to about 35 wt % of said N-alpha olefin wax.
4. The adhesive of claim 1 comprising a near infra-red energy absorbing ingredient.
5. The adhesive of claim 4 wherein the near infra-red absorbing ingredient is an organic dye or a pigment.
6. The adhesive of claim 1 comprising a fragrance.
7. The adhesive of claim 1 which has a melting point of about 120° F.
8. The adhesive of claim 1 wherein the N-alpha olefin wax is a C 20-24 , C 26-28 , or C 30+ N-alpha olefin wax.
9. The adhesive of claim 1 which is applied at a temperature of less that 350° F.
10. The adhesive of claim 9 which is applied at a temperature of less than 300° F.
11. The adhesive of claim 10 which is applied at a temperature down to about 200° F.