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:
Apr. 21, 2015
Filed:
Apr. 18, 2009
Applicants:
Ling Tao, Lakewood, CO (US);
Pol D'haene, Kessel-Lo, BE;
Philippe Moniotte, Heron, BE;
Paul Van Lierde, Haacht, BE;
Inventors:
Ling Tao, Lakewood, CO (US);
Pol D'Haene, Kessel-Lo, BE;
Philippe Moniotte, Heron, BE;
Paul Van Lierde, Haacht, BE;
Assignee:
Eastman Chemical Company, Kingsport, TN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 8/00 (2006.01); C08G 63/91 (2006.01); C08F 8/28 (2006.01);
U.S. Cl.
CPC ...
C08F 8/28 (2013.01); C08F 8/48 (2013.01); C08F 8/28 (2013.01); C08F 16/06 (2013.01);
Abstract
The present invention provides a method for continuously producing poly(vinyl butyral) in which the acetalization of poly(vinyl butyral) is carried out using a poly(vinyl alcohol) varnish provided to a mixing region of a high shear mixer at an elevated temperature, which reduces the amount of energy required compared to conventional processing because at least one cooling and heating cycle is eliminated, or makes the recuperation of energy more straightforward.