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. 19, 1998
Filed:
Oct. 21, 1996
Applicant:
Inventors:
Mathias Kuntz, Ober Beerback, DE;
Hubert Linne, Otzberg, DE;
Joachim Weitzel, Darmstadt, DE;
Dieter Heinz, Heppenheim, DE;
Rodney Riddle, Dorset, GB;
Assignee:
Merck Patent Gesellschaft mit Beschrankter Haftung, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
C09C / ; C09C / ; C09C / ;
U.S. Cl.
CPC ...
106450 ; 106401 ; 106481 ; 106482 ; 423592 ; 423593 ; 423608 ; 423618 ; 423625 ;
Abstract
Reaction spray process for preparing inclusion pigments by suspending the pigment to be encapsulated in an aqueous solution or suspension of a precursor of the inclusion material, spraying the suspension, with or without the addition of nitric acid and fuel, in a tubular reactor heated at from 850.degree. to 1100.degree. C., separating the inclusion pigment from the product stream and, if desired post-calcining the pigment at a temperature of at least 816.degree. C.