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US 4,542,068 AGranted
Method of making glass fiber mat
AssigneeGAF Corporation
InventorMatthew C. Whichard
Life of this patent
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Abstract
Method of making glass fiber mat of improved tensile strength by forming the mat from a plurality of glass fibers and a binder composition therefor which consists essentially of a urea-formaldehyde resin and alkoxylated alkyl amine surfactant.
Claims5
A method of making glass fiber mat having improved tensile strength properties comprising:
- (a) forming a wet mat of a plurality of enmeshed, sized glass fibers in a wetlaid process;
- (b) coating the fibers of said wet mat with a binder composition consisting essentially of urea-formaldehyde and alkoxylated alkyl amine of the formula ##STR4## wherein R.sub.1 is an alkyl group containing from 8 to about 30 carbon atoms, each R.sub.2 is independently H or CH.sub.3, and x+y is an integer from 2 to about 50;
- and
- (c) drying the glass mat having the binder thereon.
1 more element
Dependencies are inferred from the claim text.