Solvent-free process for making UV curable adhesives and sealant

Details Solvent-free process for making UV curable adhesives and sealant Solvent-free process for making UV curable adhesives and sealant

1996-06-11

1997-11-25

Sellers, Robert E.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 93, C08L 5302

Patent

active

056914148

ABSTRACT:
The invention herein is a solvent free process for producing UV curable adhesive and sealant compositions comprising a monool, tackifying resin, and a monohydroxylated epoxidized polydiene polymer which is comprised of at least two polymerizable ethenically unsaturated hydrocarbon monomers wherein at least one is a diene monomer which yields unsaturation suitable for epoxidation and wherein the polymer contains from 0.1 to 7.0 milliequivalents of epoxy per gram of polymer. The process involves predispersing an insoluble photoinitiator in a component of the formulation with which it is more compatible than with the tackifying resin, and then adding the tackifying resin to the predispersion.

REFERENCES:
patent: 5393818 (1995-02-01), Masse et al.
patent: 5500481 (1996-03-01), St. Clair
"Liquid Reactive Polymers for Radiation Curable High Performance PSA's" by J. R. Erickson, E. M. Zimmermann, J. G. Southwick, and K. S. Kiibler, 1995 Hot Melt Symposium, Jun. 18, 1995.

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