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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.:

US 5196485 B1

PDFFull Text
Date of Patent:
Mar. 23, 1993

Filed:

Apr. 29, 1991

One package stable etch resistant coating

Applicant:
Inventors:

Susan U McMonigal, Allison Park, PA (US);

Debra L Singer, Pittsburgh, PA (US);

Dennis A Simpson, Wexford, PA (US);

Joseph A Klanica, Sarver, PA (US);

Michael A Mayo, Pittsburgh, PA (US);

Assignee:

PPG Industries, Inc., Pittsburgh, PA (US);

Attorney:

Uhl; William J.

Primary Examiner:

Joseph L Schofer

Assistant Examiner:

Fred Zitomer

Int. Cl.
CPC ...
C08F / ; B05D / ;
U.S. Cl.
CPC ...
5253273 ; 4274071 ; 427410 ; 428413 ; 428416 ; 525438 ; 528297 ;
Abstract

A stable one package etch-resistant film-forming composition is disclosed. The composition includes a polyepoxide component having an epoxy equivalent weight on resin solids of less than about 600. The composition further includes a polyacid curing agent having an average acid functionality of greater than 2. The composition is substantially free of basic esterification catalyst, has a cured softening point of greater than about 20.degree. C., and is stable for use as a single-component composition. Also disclosed is a process for applying a color-plus-clear composite coating to a substrate which includes applying a acid-catalyzed thermosetting film-forming composition to a substrate to form a basecoat. The process also comprises applying a stable etch-resistant film-forming composition to the basecoat which includes a polyepoxide and a polyacid curing agent as described above, wherein the topcoat is substantially free of basic esterification catalyst, has a cured softening point of greater than about 20.degree. C. The composition and process are useful in original equipment finishing of automobile and trucks.

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McMonigal, Susan. (1993). One package stable etch resistant coating (U.S. Patent No. 5196485). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5196485

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