Modified acrylic urethane prepolymer concentrate and polyester r

Details Modified acrylic urethane prepolymer concentrate and polyester r Modified acrylic urethane prepolymer concentrate and polyester r

1996-04-10

1998-04-14

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526320, 526 82, 526347, C08F22602, C08F22028, C08F21208, C08F 240

Patent

active

057392404

ABSTRACT:
A modified 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, which prepolymer composition may contain 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. The employment of the modified 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 cured, unsaturated resin composition, such as a reduction in glass roll-out when the resin composition is employed with fiberglass.

REFERENCES:
patent: 4192762 (1980-03-01), Osborn
patent: 5599877 (1997-02-01), Wang et al.
Sartomer Company, Inc., 1992 Product Catalogue, 30 pp.
"Glossary of UV/EB Terms" 16 pp.

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