C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/4051
C08L 67/06 (2006.01) C08J 3/20 (2006.01) C08J 5/00 (2006.01)
Patent
CA 1082392
ABSTRACT OF THE DISCLOSURE This invention pertains to a pigmentable, low-shrink molding composition based on thermosetting, unsaturated polyester resin in combiantion with lightly cross-linked polymer particles. The lightly cross linked polymer particles have a particle size preferably between about 20 microns to 50 microns and can be selected from lightly cross-linked condensation polymers and lightly cross-linked addition polymers. In a preferred aspect of the invention the lightly cross-linked polymer particles contain minor amounts of pendant reactive groups selected from amino and oxirane groups to produce a one-pack stabilized low-shrink mold- ing resin mixture. The pigmentable low-shrink molding composi- tions are stabilized dispersions containing pigments dispersed therein in conjunction with thermosetting polyester polymer, monomer, and lightly cross-linked polymer particles as well as fillers to provide a pigmentable low-shrink molding composition which cures to uniformly pigmented low-profiled molded part.
277101
Corporation Owens-Corning Fiberglas
G. Ronald Bell & Associates
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