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:
Aug. 25, 2026
Filed:
Sep. 14, 2020
Celanese International Corporation, Irving, TX (US);
Harmin Müller, Hofheim, DE;
Christopher Kupka, Frankfurt, DE;
Celanese International Corporation, Irving, TX (US);
Abstract
The present invention relates an emulsifier stabilized formulated copolymer dispersion, processes for forming the emulsifier stabilized formulated copolymer dispersion, and to uses thereof. The emulsifier stabilized formulated copolymer dispersion may be formed by polymerizing at least one monomer in the presence of a stabilizer package, to form an emulsifier stabilizer copolymer dispersion, and introducing a post-addition comprising a polyvinyl alcohol solution to the emulsifier stabilized copolymer dispersion to form an emulsifier stabilized formulated copolymer dispersion. The polyvinyl alcohol, added as solution, may be added in an amount from 1 to 10% by weight, solid polyvinyl alcohol based on solids content of the emulsifier stabilized copolymer dispersion. The polyvinyl alcohol may have a molecular weight expressed as viscosity from 3 mPa·s to 60 mPa·s based on a 4% solution at 20° C. and a degree of hydrolysis from 70 mol. % to 85 mol. %, preferably from 78 mol. % to 82 mol. %, more preferably 80 mol. %.