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. 14, 1996
Filed:
Jul. 06, 1995
Applicant:
Inventor:
Peter Schilling, Charleston, SC (US);
Assignee:
Westvaco Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
524377 ; 524386 ; 524556 ; 5253299 ; 525382 ;
Abstract
Corrosion inhibiting compositions for metals subjected to highly acidic environments may be produced by reacting in a condensation reaction a styrene-acrylic acid copolymer with a polyamine (or combination of polyamines) to produce a polyamidoamine inhibitor. A preferred inhibitor product may be produced by replacing up to 80% of the styrene-acrylic acid copolymer with a member selected from the group consisting of: rosin, C.sub.23 -C.sub.24 modified rosins, C.sub.8 -C.sub.20 fatty acids, C.sub.9-C.sub.22 modified fatty acids, and combinations thereof. These inhibitors exhibit excellent film forming and film persistency characteristics.