Low-density molding compound
AssigneeContinental Structural Plastics, Inc.
InventorsBrian A. Beach, Probir K. Guha, Brad Haskell, Michael J. Siwajek
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Abstract
A molding composition formulation includes a thermoset cross-linkable 12 to 45 micron polymeric resin. Hollow glass microspheroids are present from 2 to 12 total weight percent. An article formed from such a composition is further strengthened by the addition of a surface activating agent bonded to the surface of the glass microspheroids. Conventional particulate fillers when added to an inventive formulation provide enhanced performance when the filler particle has a size sufficiently small to insert within adjacent microspheroid interstitial voids. An unsaturated polyester resin so formed is particularly well suited for the formation of sheet molding compound formulations.
Claims13
A molding composition formulation comprising:
- a thermoset cross-linkable polymeric resin;
- and
- hollow glass microspheroids;
- and
- a surface activating agent that bonds to one of said hollow glass microspheroids;
- said resin cured to form an article.
Dependencies are inferred from the claim text.