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:
Dec. 13, 1977
Filed:
Jun. 21, 1973
Thomas H Haag, Feasterville, PA (US);
William H Brendley, Jr, Hatboro, PA (US);
Richard Martorano, Marlton, NJ (US);
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
Disclosed are aqueous acrylic thermosetting resinous compositions having an alkaline pH and containing a specific rheological modifier in critical amount, and application to metal sheets, curing the same, and in a preferred embodiment shaping the metals to achieve metal decoration. By 'decorating' is meant applying synthetic resinous coatings to the metal followed by a mechanical forming operation such as the formation of can bodies or screw-threaded bottle caps. The composition is thermosettable and comprises (A) a water-insoluble addition copolymer of certain monomers in latex form, (B) a water-soluble urea-formaldehyde or triazine-formaldehyde reaction product or a water-soluble methanol or ethanol ether thereof, or a combination of the aminoplast products, and, as an essential component, (C) a water-soluble polyethylene glycol having an average molecular weight of from about 400 to about 100,000. The copolymer contains small amounts of carboxyl groups, and amide or hydroxyl functionality, or both of the latter. The weight ratio on a solids basis of (A) to (B) is from 35:65 to 65:35, and the solids content is between 40 and 80 percent, the amount of said water-soluble rheology modifier being from 1 to 5 percent based on the total weight of (A) and (B), on a solids basis.