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:
Feb. 28, 1989
Filed:
Jun. 06, 1988
Philippe Bugnon, Essert, CH;
Bernhard Medinger, Giffers, CH;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
Compositions containing an organic pigment coated with metal oxides, wherein the pigment particles are provided with a tenacious, dense, highly crosslinked coating of silica and/or alumina which is fixed by polycondensation of a silicate and/or aluminate with the free hydroxyl groups of a layer of ethyl cellulose that densely coats the surface of the pigment particles. Pigment compositions of this kind are distinguished in particular by excellent rheological properties in varnish and printing ink systems, by high gloss of the finishes obtained therewith, and by substantial non-deformation of the plastic mouldings pigmented therewith.