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:
Mar. 31, 2015
Filed:
Jul. 15, 2008
Applicant:
Ivan Cabrera, Dreieich, DE;
Inventor:
Ivan Cabrera, Dreieich, DE;
Assignee:
Celanese Emulsions GmbH, Kronberg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 2/16 (2006.01); C08L 11/02 (2006.01); C08F 2/22 (2006.01); C08F 218/08 (2006.01); C08F 220/18 (2006.01); C08F 263/00 (2006.01); C08F 263/02 (2006.01); C08F 263/04 (2006.01); C08L 51/00 (2006.01); C09D 131/02 (2006.01); C09D 143/04 (2006.01); C09D 151/00 (2006.01); C08F 230/08 (2006.01);
U.S. Cl.
CPC ...
C08F 2/22 (2013.01); C08F 218/08 (2013.01); C08F 220/18 (2013.01); C08F 263/00 (2013.01); C08F 263/02 (2013.01); C08F 263/04 (2013.01); C08L 51/003 (2013.01); C09D 131/02 (2013.01); C09D 143/04 (2013.01); C09D 151/003 (2013.01); C08F 230/08 (2013.01);
Abstract
What are described are polyvinyl ester dispersions which are prepared in a multistage process and have a low content of polymerized acids or acid anhydrides. They can be obtained by a multistage process in which a polyvinyl ester dispersion is obtained in a first stage, monomers in dissolved or pure form are added to the reaction mixture in a second stage and then the polymerization is started again. The polymer dispersions obtained in this way are notable for a low coagulum content and for increased tensile strengths of the films formed therefrom.