Unsaturated polyester resin composition

Details Unsaturated polyester resin composition Unsaturated polyester resin composition

1997-08-29

1998-06-30

Acquah, Samuel A.

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

Synthetic resins

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

528 65, 528 66, 528 75, 528 80, 528 83, 528272, 528306, 525 11, 525 13, 525 17, 525 28, 525 43, 525437, 525440, 525445, 525447, 524174, 524356, 524442, 522 24, 522 29, 522 33, 522 39, C08F 2000

Patent

active

057735310

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: 3882189 (1975-05-01), Hudak
patent: 4192762 (1980-03-01), Osborn
patent: 4834933 (1989-05-01), Gardner et al.
patent: 5006413 (1991-04-01), Den Hartog et al.
patent: 5153246 (1992-10-01), Michaels et al.
patent: 5599877 (1997-02-01), Wang et al.

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