Back to results
US 4,052,527 AGranted
Radiation polymerized hot melt pressure sensitive adhesives
AssigneeNational Starch and Chemical Corporation
InventorsStephen D. Pastor, Martin M. Skoultchi
Life of this patent
Estimating the term…
Abstract
The present invention is directed to hot melt pressure sensitive adhesive compositions formed by copolymerizing at least one 3-(chlorinated aryloxy)-2-hydroxypropyl ester of an alpha, beta unsaturated carboxylic acid with acrylate based copolymerizable monomers, heating the resultant ethylenically saturated prepolymer to a temperature sufficient to render it fluid and flowable; coating onto a substrate and exposing to ultraviolet radiation.
Claims8
A method for the production of hot melt adhesive products having pressure sensitive properties comprising the steps of
- a. copolymerizing at least one 3-(chlorinated aryloxy)-2-hydroxypropyl ester of an alpha, beta unsaturated carboxylic acid with at least one acrylate based copolymerizable monomer,
- b. heating the resultant ethylenically unsaturated prepolymer to a temperature sufficient to render it fluid and flowable,
- c. coating the heated prepolymer onto a substrate, and
- d. exposing the coated substrate to ultraviolet radiation of wavelength 1800 to 4000 A for a period of time sufficient to crosslink the prepolymer.
1 more element
Dependencies are inferred from the claim text.