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:
Jun. 09, 2026
Filed:
Apr. 22, 2021
Basf SE, Ludwigshafen, DE;
Sebastian Marius Raupp, Ludwigshafen, DE;
Sylvia Bertha, Ludwigshafen, DE;
Andreas Daiss, Ludwigshafen, DE;
Marco Krueger, Ludwigshafen, DE;
BASF SE, Ludwigshafen, DE;
Abstract
The invention relates to an apparatus for producing a pulverulent product, comprising a device for dropletization () of a liquid phase, an addition point () for a gas above the device for dropletization (), at least one gas withdrawal point () on the circumference of the apparatus (), a solid withdrawal point () and a tower shell () between the device for dropletization () and the gas withdrawal point () and having, above the solid withdrawal point (), a region () having at least partly a decreasing hydraulic diameter toward the solid withdrawal point () and having a maximum hydraulic diameter greater than the mean hydraulic diameter of the tower shell (), and the tower shell () projecting into the region () having at least partly a decreasing hydraulic diameter such that an annular duct () is formed between the part of the tower shell () projecting into the region () having at least partly a decreasing hydraulic diameter and the upper part () of the region having at least partly a decreasing hydraulic diameter, the at least one gas withdrawal point () being disposed in the annular duct (), wherein the part of the tower shell () projecting into the region () having at least partly a decreasing hydraulic diameter and forming an inner wall of the annular duct () is made at least partly of a gas permeable material (). The invention further relates to a use of the apparatus () for producing pulverulent poly(meth)acrylate.