Stock material or miscellaneous articles – Composite – Of addition polymer from unsaturated monomers
Reexamination Certificate
2006-06-13
2010-11-23
Jackson, Monique R (Department: 1787)
Stock material or miscellaneous articles
Composite
Of addition polymer from unsaturated monomers
C428S292100, C428S500000, C428S514000, C428S522000, C428S535000, C052S309100
Reexamination Certificate
active
07838123
ABSTRACT:
Disclosed is a variable vapor barrier for moisture control of buildings comprising or formed from a material having a moisture permeance of less than 0.1 perms (grains/h·ft2·inches of Hg) at less than 50% average humidity, such as from 10 to 50% or 20 to 40%; and a moisture permeance greater than 4, or greater than 10 perms at greater than 60% average humidity, such as from 60 to 90%, or 70 to 80%. Also disclosed are articles comprising the variable vapor barrier and methods of their use.
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PCT International Search Report for International Application No. PCT/US2007/013976, filed Jun. 12, 2007, dated Feb. 21, 2008.
Chen John Chu
Shah Ashok Harakhlal
E. I. du Pont de Nemours and Company
Jackson Monique R
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