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:
Feb. 23, 2021
Filed:
Apr. 10, 2017
Basf SE, Ludwigshafen am Rhein, DE;
Gerhard Albrecht, Prien am Chiemsee, DE;
Sophie Putzien, Trostberg, DE;
Torben Gaedt, Trostberg, DE;
Michael Dietzsch, Trostberg, DE;
Harald Grassl, Trostberg, DE;
Iris Loescher, Trostberg, DE;
Luc Nicoleau, Villevaude, FR;
Abstract
The invention relates to a process for modifying polymer particles of an aqueous polymer dispersion in which positively or negatively charged polymer particles are provided with an inorganic salt shell. The inorganic shell leads to an improved drying ability and storage stability of the latex and improves the storage stability of the resulting polymer powder. The obtained polymer powder exhibits an improved viscosity and faster skin-forming time in the final application and is therefore particularly useful in a building material composition.