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. 10, 2006
Filed:
Mar. 09, 2001
Jürgen Beyer, Frankfurt am Main, DE;
Dietmar Breier, Freigericht, DE;
Gunther Effenberger, Bad Vilbel, DE;
Michael Roos, Waldems-Steinfischbach, DE;
Jens Ruppert, Frankfurt am Main, DE;
Olaf Just, Bad Homburg, DE;
Detlef Wehle, Brechen, DE;
Jürgen Beyer, Frankfurt am Main, DE;
Dietmar Breier, Freigericht, DE;
Gunther Effenberger, Bad Vilbel, DE;
Michael Roos, Waldems-Steinfischbach, DE;
Jens Ruppert, Frankfurt am Main, DE;
Olaf Just, Bad Homburg, DE;
Detlef Wehle, Brechen, DE;
Clariant GmbH, Frankfurt, DE;
Abstract
The invention relates to a method for producing a phenothiazine granulate with a narrow particle size distribution. At least 98% pure phenothiazine in liquid form is pressed through a device provided with boreholes and a frequency is applied to said liquid phenothiazine. The liquid phenothiazine discharged through the boreholes enters a cooling medium having a temperature of between −196 and +120° C. The drops of liquid phenothiazine thus produced are brought to a temperature below melting point and are optionally solidified in another post-cooling area. Optionally, fine-grain particles or coarse-grained particles thus formed can be subsequently removed by appropriate methods. The bulk density of the obtained phenothiazine granulates ranges more particularly from 720–780 kg/m.