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:
Jan. 18, 2005
Filed:
Sep. 29, 1999
Helmut Auweter, Limburgerhof, DE;
Heribert Bohn, Wattenheim, DE;
Robert Heger, Heidelberg, DE;
Ulrike Schlösser, Neustadt, DE;
Karl Siemensmeyer, Frankenthal, DE;
Helmut Auweter, Limburgerhof, DE;
Heribert Bohn, Wattenheim, DE;
Robert Heger, Heidelberg, DE;
Ulrike Schlösser, Neustadt, DE;
Karl Siemensmeyer, Frankenthal, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
Dye-containing polymer particles of at least one dye in a matrix of an essentially water-insoluble polymer and having an average particle size within the range from 5 nm to 5 μm are prepared by a process which comprises precipitating the dye-containing polymer particles from a solution of the polymer and of the dye in a water-miscible organic solvent by addition of an aqueous phase thereto.