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:
Mar. 30, 2010
Filed:
Sep. 01, 2004
Carsten Schellenberg, Freiburg, DE;
Clemens Auschra, Freiburg, DE;
Wolfgang Peter, Neuenburg am Rhein, DE;
Delphine Kimpel, Mulhouse, FR;
Pascal Hayoz, Hofstetten, CH;
Carsten Schellenberg, Freiburg, DE;
Clemens Auschra, Freiburg, DE;
Wolfgang Peter, Neuenburg am Rhein, DE;
Delphine Kimpel, Mulhouse, FR;
Pascal Hayoz, Hofstetten, CH;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
The instant invention pertains to a concentrated aqueous dispersion of organic light stabilizers with a particle size of less than 1000 nm, prepared by heterophase radical polymerization of ethylenically unsaturated monomers in the presence of the light stabilizers, wherein the weight ratio of light stabilizer to polymeric carrier is greater than 50/100. Another aspect of the invention is a process for the preparation of such aqueous dispersions with high light stabilizer content. Aqueous dispersions prepared according to this process are useful ingredients for adhesives, aqueous emulsions of natural or synthetic rubbers, water based inks or a water based coating compositions, which are consequently also subjects of the invention.