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US 2010/0147477 A1Published application
Roofing mat using modified urea-formaldehyde binder
AssigneeJohns Manville
InventorsSouvik Nandi, Guodong Zheng, Jawed Asrar, Philip Francis Miele
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Abstract
Provided is thermosetting urea-formaldehyde (UF) resin binder formulation modified with a thickener. The formulation preferably has a viscosity in the range of from 3 to 10 cP and a surface tension of from 35 to 50 mN/m, and is preferably prepared from a binder composition exhibiting a viscosity of from 175 to 250 cP.
Claims8
1-3. (canceled)
A process for making a non-woven fiber mat comprising (a) forming an aqueous dispersion of fibers;
- (b) passing the dispersion through a mat forming screen to form a wet non-woven mat and (c) applying the binder formulation of claim 1 to the wet non-woven mat.
Dependencies are inferred from the claim text.