TREA

Gypsum wallboard and method for producing same

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Information

  • Patent Grant
  • T977009
  • Patent Number
    T977,009
  • Date Filed
    Friday, March 24, 1978
    46 years ago
  • Date Issued
    Tuesday, December 5, 1978
    46 years ago
Information
Abstract
disclosed is a paper-covered gypsum board comprised of a gypsum core and a paper cover sheet covering at least one side of said core, the surface of said paper cover sheet adjacent the gypsum core being surface sized with a sizing composition initially comprised of a hydrophobic cellulose reactive sizing agent and a nitrogen-containing condensation product.
Description
Continuations (1)
Number Date Country
Parent 791437 Apr 1977