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:
Oct. 27, 2020
Filed:
Mar. 31, 2016
Applicant:
Sekisui Chemical Co., Ltd., Osaka, Osaka, JP;
Inventors:
Assignee:
SEKISUI CHEMICAL CO., LTD., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 17/10 (2006.01); B29C 48/00 (2019.01); B29C 48/88 (2019.01); B29C 55/12 (2006.01); B29C 71/02 (2006.01); C08J 5/18 (2006.01); C03C 27/10 (2006.01); C08K 5/00 (2006.01); B32B 7/02 (2019.01); B32B 27/22 (2006.01); C08J 5/12 (2006.01); B29K 29/00 (2006.01); B29L 31/30 (2006.01); B60J 1/00 (2006.01);
U.S. Cl.
CPC ...
B32B 17/10761 (2013.01); B29C 48/0018 (2019.02); B29C 48/919 (2019.02); B29C 55/12 (2013.01); B29C 71/02 (2013.01); B32B 7/02 (2013.01); B32B 17/10036 (2013.01); B32B 17/10605 (2013.01); B32B 17/10633 (2013.01); B32B 17/10678 (2013.01); B32B 27/22 (2013.01); C03C 27/10 (2013.01); C08J 5/18 (2013.01); C08K 5/0016 (2013.01); B29K 2029/14 (2013.01); B29L 2031/3052 (2013.01); B32B 2250/03 (2013.01); B32B 2250/05 (2013.01); B32B 2250/40 (2013.01); B32B 2307/42 (2013.01); B32B 2605/006 (2013.01); B60J 1/001 (2013.01); C08J 5/12 (2013.01); C08J 2300/22 (2013.01); C08J 2329/14 (2013.01);
Abstract
There is provided an interlayer film for laminated glass with which protrusion of an interlayer film portion in the TD direction can be suppressed at the time of producing laminated glass. In the interlayer film for laminated glass according to the present invention, when, in the MD direction of the interlayer film, a birefringence index of the first surface part, a birefringence index of the second surface part, and a birefringence index of the center part are defined as ΔnMDA, ΔnMDB, and ΔnMDC, respectively, ΔnMDA, ΔnMDB, and ΔnMDC each are 0.25×10or less.