The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 13, 2012
Filed:
Dec. 11, 2006
Christophe Wagner, Lansdale, PA (US);
Murray Toas, Norristown, PA (US);
Kurt Mankell, Minnetonka, MN (US);
Christophe Wagner, Lansdale, PA (US);
Murray Toas, Norristown, PA (US);
Kurt Mankell, Minnetonka, MN (US);
Certainteed Corporation, Valley Forge, PA (US);
Abstract
Thermal insulation is provided which includes randomly distributed inorganic fibers and about 5-500 wt. % unexpanded hollow microspheres comprising a polymeric shell having disposed therein a blowing agent or gas, said unexpanded hollow microspheres increasing in size when heated. Also provided is an insulated attic, including a plurality of rafters, an attic floor and a thermal insulation comprising randomly distributed glass fibers in at least about 5 wt. % hollow expanded microspheres having a diameter of 20-140 microns, which have been expanded from about 6-40 microns. The hollow expanded microspheres reduce the thermal conductivity of the thermal insulation by at least about 5%, and have shown improvement up to 19.4% decreased thermal conductivity during tests at loadings from 30% to 257%. Additionally, calcium acetate and cupric carbonate additions to glass fiber insulation products showed improvement by at least about a 1% decrease in thermal conductivity.