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:
May. 10, 2005
Filed:
Jan. 31, 2002
Gerhard Giger, Muttenz, CH;
Jürgen Beyrich, Huttingen, DE;
Philippe Bugnon, Essert, CH;
Marc Maurer, Village-Neuf, FR;
Gerhard Giger, Muttenz, CH;
Jürgen Beyrich, Huttingen, DE;
Philippe Bugnon, Essert, CH;
Marc Maurer, Village-Neuf, FR;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
Organic pigments are conditioned by treating them, after synthesis but preferably without or with only partial drying, in a mixture of from 1 to 30% by weight of a neutral, polar liquid having a dipole moment μ of 2.8-6.0? 10esu (2.8 to 6.0 debye units) and from 70 to 99% by weight of water in an agitated media pearl mill having a specific power density of at most 2.0 kJper liter of grinding space. Drying is especially suitable in the case of only slightly agglomerating, easy to wet pigments of specific surface area from 1 to 25 m/g. The method gives excellent results, and is flexible and also much simpler than known methods.