Patent · US Active

Building materials, compositions, and methods

US8926855B2 · kind B2 · utility

10Cited by

2References

34Claims

0Family size

Assignee

Georgia-Pacific Gypsum LLC · US

Inventors

Vincent B. Thomas · Bogart, US
Jeffrey T. Fields · Suwanee, US

Key dates

Filing date	Dec 20, 2012
Grant date	Jan 6, 2015
Priority date	—
Expiry date	Mar 29, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W30/91
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Building materials include a dampening layer which contains a plaster and a viscoelastic polymer, such as polyvinyl butyral. The dampening layer may also include a barium salt. Methods of making a sound dampening material include providing a plaster mixture. The mixture may include a viscoelastic polymer and/or a barium salt. The plaster mixture is combined with water and/or a viscoelastic polymer dispersion, to form a slurry. The slurry is applied to a surface and set to form a sound dampening layer.

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