Patent ID: 9068088
Filing Date: 2015-06-30
Classification: C08G,C08J,C08K,C09D,Y10T

Abstract:
1. An air barrier sealant consisting of: a closed cell polyurethane material including UV, fire and antimicrobial protectants, the closed cell polyurethane material not having more than 8% open cells; wherein the air barrier sealant has a top exposed surface that is spaced apart from a bottom surface by a thickness, wherein the top exposed surface is resistant to cracking, breaking, chipping, corrosion, and other deterioration; wherein both the top exposed surface and the corresponding bottom surface completely cover a surface of an object by the bottom surface adhering to the object surface; wherein the air barrier sealant expands after application to the entire wall, the thickness being about ¼ inch; thereby providing an air barrier on the entire exposed wall surface; wherein the air barrier sealant has an air permeance of not more than about 0.00030 CFM/ft wherein the air barrier sealant has a pull adhesion of not less than about 110 kPa and a tensile strength of not less than about 200 kPa; wherein the air barrier sealant is substantially non-deformable for differential pressures up to approximately 300 Pa; and wherein the average calculated air flow is no more than 0.001508 L/(sm