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. 11, 2005
Filed:
Oct. 20, 1999
Georg Assmann, Juechen, DE;
Wilfried Raehse, Duesseldorf, DE;
Rene Andres Artiga Gonzalez, Duesseldorf, DE;
Beatrix Kottwitz, Duesseldorf, DE;
Georg Assmann, Juechen, DE;
Wilfried Raehse, Duesseldorf, DE;
Rene Andres Artiga Gonzalez, Duesseldorf, DE;
Beatrix Kottwitz, Duesseldorf, DE;
Henkel Kommanditgesellschaft auf Aktien, Duesseldorf, DE;
Abstract
The invention relates to a method of producing soluble polymer granules which are suitable for use in washing and/or cleaning surfactants. According to said method, an aqueous preparation of the polymer which contains at least 30% by weight polymer, optionally in admixture with other washing and/or cleaning surfactant ingredients, is granulated and at the same time dried batchwise or continuously, preferably continuously, in a circular fluidized bed. In said fluidized bed, an eddy flow about the vertical axis of the apparatus is produced above the ground of the fluidized bed by means of an air inlet. The invention also relates to soluble, spherical polymer granules with a polymer content of 50 to 95% by weight and to washing or cleaning surfactants containing the inventive granules.