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. 12, 1990
Filed:
Jan. 11, 1989
Richard Goetze, Mehring-Od, DE;
Maximilian Kerbl, Emmerting, DE;
Wacker Chemie GmbH, Munich, DE;
Abstract
Aqueous coating of copy paper based on a porous inorganic matrix, an elastifying organic polymer and the color paste included in the pores. The inorganic matrix comprises a Zr.sup.4+ polycondensate or Zr/Al mixed oxide gel, which is preferably elastified by addition of alkali-soluble polyacrylates or poly(vinyl acetates) or water-soluble poly(vinyl alcohols) and contains the color paste included in the pores. For production, an aqueous solution or dispersion of the polymer is initially introduced, adjusted to a pH of from 8 to 9 by adding ammonia, and the color paste and an aqueous solution of the Zr compound are subsequently admixed. The coating composition is applied to a backing material and dried in a known manner.