Radiant energy curable acrylic urethane prepolymer resin composi

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...

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Details

522174, 526301, 526347, C08F 246, C08F22602, C08F21208

Patent

active

057475520

ABSTRACT:
An acrylic urethane prepolymer composition and an unsaturated polyester resin composition to which the prepolymer has been added. The prepolymer composition includes an acrylic urethane prepolymer prepared by the reaction of diisocyanate, like MDI, with an hydroxyl-containing acrylate monomer, such as a pentaerythritol triacrylate. The prepolymer composition contains a styrene monomer and an inhibitor, such as benzoquinone, to retard the reaction of the prepolymer and styrene monomer prior to the addition of the prepolymer composition into the polyester resin composition and a photoinitiator to promote the polymerization of the resin by exposure to radiant energy. The employment of the urethane prepolymer composition provides for the reduction in the amount of styrene monomer used in the unsaturated resin composition and also provides for improved chemical and physical properties of the photocured, unsaturated resin composition.

REFERENCES:
patent: 4173682 (1979-11-01), Noomen et al.
Sartomer Company, Inc., 1992 Product Catalogue, 30 pp. (copy).
"Glossary of UV/EB Terms" 16 pp. (copy).

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