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:
Jul. 13, 1999
Filed:
Apr. 09, 1998
Klaus Kohlhammer, Marktl, DE;
Wolfgang Roth-Greiner, Weil am Rhein, DE;
Reiner Figge, Ampfing, DE;
Reinhard Haerzschel, Burghausen, DE;
Wacker-Chemie GmbH, Munich, DE;
Abstract
The invention is a ready-to-use, water-redispersible powder composition useful for preparing photographic recording materials or inkjet recording materials, which comprises a mixture containing polymers made from ethylenically unsaturated monomers and gelatin, wherein the polymers are prepared by emulsion polymerization in the presence of at least one emulsifier selected from emulsifiers with ionic and nonionic groups and if exclusively ionic emulsifiers are used, the copolymerization is carried out in the presence of comonomers which contain one or more groups selected from --COOH, --OH, SO.sub.3.sup.-, NCH.sub.2 OH and --C.dbd.O.