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Reduced density hollow glass microsphere polymer composite

  • US 9,771,463 B2
  • Filed: 12/11/2015
  • Issued: 09/26/2017
  • Est. Priority Date: 04/29/2009
  • Status: Active Grant
First Claim
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1. A shaped structural article formed by melt processing of a thermoplastic composite comprising a dispersion of a glass particulate and a fiber in a continuous thermoplastic polymer, the thermoplastic composite comprising:

  • (a) greater than 59 to 90 vol. % of a glass particulate having a particle size greater than about 5 microns,(b) a fiber,(c) about 0.005 to 8 wt. % of a coating of an interfacial modifier, the interfacial modifier free of a coupling agent, on the fiber and the glass particulate; and

    (d) a continuous thermoplastic polymer, wherein the interfacial modifier coating on the glass particulate and the fiber allows for greater freedom of movement of the glass particulate within the continuous thermoplastic polymer of the thermoplastic composite, the percentages based on the thermoplastic composite wherein the continuous thermoplastic polymer is free of a polymer comprising tetrafluoroethylene, hexafluoropropylene or perfluoroalkylvinyl ether.

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