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:
May. 22, 1990
Filed:
Jun. 22, 1989
Applicant:
Inventors:
Jenn S Shih, Paramus, NJ (US);
Terry E Smith, Morristown, NJ (US);
Robert B Login, Oakland, NJ (US);
Assignee:
GAF Chemicals Corporation, Wayne, NJ (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65B / ;
U.S. Cl.
CPC ...
427154 ; 4273855 ; 4273897 ; 524 96 ; 524548 ; 524808 ;
Abstract
An aqueous process is described for preparing water-resistant coatings of hydrophobic copolymers of a predetermined composition. The hydrophobic copolymers are made from hydrophilic comonomers such as a vinyl lactam and a polymerizable carboxylic acid. The hydrophobic copolymers are rendered water soluble with a volatile neutralizing agent, such as ammonium hydroxide, then coated onto a substrate and heated to provide the water-resistant coating, and, if desired, redissolved in an aqueous alkaline solution.