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. 05, 2016
Filed:
Dec. 11, 2013
Applicant:
Kuraray Europe Gmbh, Frankfurt, DE;
Inventors:
Martin Steuer, Liederbach, DE;
Masako Katayama, Okayama pref., JP;
Assignee:
KURARAY EUROPE GMBH, Frankfurt, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 8/28 (2006.01); C08F 8/00 (2006.01); B32B 17/10 (2006.01);
U.S. Cl.
CPC ...
C08F 8/28 (2013.01); B32B 17/10761 (2013.01); Y10T 428/3163 (2015.04);
Abstract
The invention relates to polyvinyl acetals obtainable by reacting polyvinyl alcohol with at least one aldehyde with a degree of acetalization of at least 75 mol %, characterized by an OH blockiness of the polyvinyl acetal, defined as a quotient from the number of methylene groups of two adjacent alcohol sequences (VV) and the sum of the number of methylene groups of adjacent alcohol/acetal sequences and acetal/acetal sequences (VB+BB), of more than 0.151, as well as a process for the preparation thereof.