Patent · US Active

Sizing composition for wet use chopped strand glass fibers

US11001525B2 · kind B2 · utility

1Cited by
17References
19Claims
0Family size

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Key dates

Filing dateJun 15, 2017
Grant dateMay 11, 2021
Priority date—
Expiry dateSep 1, 2037

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC04B2111/0062
  • WIPO fieldMaterials, metallurgy
  • WIPO sectorChemistry

Abstract

A sizing composition including water, a polyvinylpyrrolidone film former, a silane coupling agent, a lubricant, and a surfactant is provided. The polyvinylpyrrolidone film former constitutes from 30 wt. % to 50 wt. % of the dry solids of the sizing composition. Wet use chopped strand glass fibers for use in reinforcing gypsum board are also provided. The wet use chopped strand glass fibers include chopped glass fibers having the sizing composition applied thereto. The sizing composition improves fiber bundle integrity, fiber flow rate, fiber flow rate consistency, and dispersibility of the wet use chopped strand glass fibers in a gypsum matrix or slurry.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.