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Gypsum composites used in fire resistant building components

  • US 10,315,386 B2
  • Filed: 06/27/2016
  • Issued: 06/11/2019
  • Est. Priority Date: 06/29/2012
  • Status: Active Grant
First Claim
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1. A fire resistant composite material comprising:

  • gypsum in an amount sufficient to provide fire resistance, wherein the amount is 60 to 90% by weight;

    glass fibers, cellulose fibers, polyvinyl alcohol fibers and polypropylene fibers substantially homogeneously distributed through the composite;

    a rheology-modifying agent; and

    wherein the fire resistant composite material does not include any cement or flyash.

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