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:
Jun. 07, 1983
Filed:
Sep. 10, 1981
Applicant:
Inventors:
Philip A Cautilli, Feasterville, PA (US);
Edward Wotier, Wayne, NJ (US);
Assignee:
GAF Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; B05D / ;
U.S. Cl.
CPC ...
427243 ; 4273898 ; 427392 ; 4273934 ; 604373 ;
Abstract
A method of making a hydrophobic membrane comprising stabilizing a hydrophobic latex binder by admixture with a fugitive, heat decomposable, hydrophilic surfactant which upon heating yields a hydrophobic residue; applying the latex thus stabilized to a hydrophobic web or substrate of non-woven fibers and then heating the coated web to decompose the surfactant to provide a dry hydrophobic web containing the hydrophobic residue of the surfactant.