Invention Grant
- Patent Title: Variable vapor barrier for humidity control
- Patent Title (中): 可变蒸气屏障，用于湿度控制
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Application No.: US11451979Application Date: 2006-06-13
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Publication No.: US07829197B2Publication Date: 2010-11-09
- Inventor: John Chu Chen , Sam Louis Samuels , Ashok Harakhlal Shah
- Applicant: John Chu Chen , Sam Louis Samuels , Ashok Harakhlal Shah
- Applicant Address: US DE Wilmington
- Assignee: E. I. du Pont de Nemours and Company
- Current Assignee: E. I. du Pont de Nemours and Company
- Current Assignee Address: US DE Wilmington
- Main IPC: B32B27/10
- IPC: B32B27/10 ; B32B27/30
Abstract:
Disclosed is a composition comprising a neutralized acid copolymer or ionomer thereof, an organic acid, and optionally other polymers, having a ratio of wet cup permeance to dry cup permeance greater than 10. The composition is useful as a variable vapor barrier for moisture control of buildings. Also disclosed are articles comprising the variable vapor composition and methods of their use.
Public/Granted literature
- US20070287019A1 Variable vapor barrier for humidity control Public/Granted day:2007-12-13
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