The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 17, 1990
Filed:
Dec. 12, 1988
Applicant:
Inventors:
Steven S Lalwani, Upper Montclair, NJ (US);
Philip J Halpin, Rock Hill, SC (US);
Assignee:
GAF Building Materials Corporation, Wayne, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; D04H / ; D21H / ; D21H / ;
U.S. Cl.
CPC ...
162156 ; 162166 ; 162169 ; 428290 ; 428291 ; 4283073 ; 4283115 ; 428436 ; 428441 ; 428489 ;
Abstract
A glass fiber mat having improved strength and fiber wettability is provided by incorporation of a critical amount of between 1% and 6% by weight (solids) of a carboxylated styrene-butadiene latex having a pH between about 5 and about 8.5, a glass transition temperature (Tg) less than 25.degree. C. and a surface tension less than 50 dynes/cm, and 94% and 99% by weight (solids) of a urea-formaldehyde resin solution having a pH of from about 6.5 to about 8.5.