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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.:

US 11325354 B1

PDFFull Text
Date of Patent:
May. 10, 2022

Filed:

Mar. 24, 2017

Interlayer film for laminated glass

Applicant:

Kuraray Co., Ltd., Kurashiki, JP;

Inventors:

Yoshiaki Asanuma, Kurashiki, JP;

Takeshi Kusudou, Kurashiki, JP;

Assignee:

KURARAY CO., LTD., Kurashiki, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Prashant J Khatri

Int. Cl.
CPC ...
B32B 17/10 (2006.01); B32B 27/30 (2006.01); C08F 116/38 (2006.01); C08J 5/18 (2006.01); C08K 5/01 (2006.01); C08K 5/03 (2006.01); C08K 5/05 (2006.01); C08K 5/053 (2006.01); C08K 5/12 (2006.01); B32B 7/02 (2019.01);
U.S. Cl.
CPC ...
B32B 17/10761 (2013.01); B32B 7/02 (2013.01); B32B 17/10036 (2013.01); B32B 17/10743 (2013.01); B32B 27/30 (2013.01); B32B 27/308 (2013.01); C08F 116/38 (2013.01); C08J 5/18 (2013.01); C08K 5/01 (2013.01); C08K 5/03 (2013.01); C08K 5/05 (2013.01); C08K 5/053 (2013.01); C08K 5/12 (2013.01); B32B 2307/102 (2013.01); B32B 2315/08 (2013.01); B32B 2329/06 (2013.01); B32B 2333/04 (2013.01); B32B 2605/006 (2013.01); B32B 2605/08 (2013.01); C08J 2329/14 (2013.01); C08J 2331/04 (2013.01);
Abstract

Provided is an interlayer film for laminated glass which is excellent in sound insulation property and has improved sound insulation performance not only in a coincidence region but also in a mass-dominated region. The interlayer film for laminated glass includes a sound insulating layer which is formed from a composition (A) containing at least one resin (a1) selected from a thermoplastic resin and a thermosetting resin, wherein a tan δ obtained when a dynamic viscoelasticity of a sheet, which is obtained by molding the composition (A) to have a thickness of 0.8 mm, is measured at a frequency of 0.3 Hz in a tension mode has a maximal value at a temperature T(° C.), T(° C.) is in a range of −50 to 50° C., and the tan δ at T(° C.) is 2.5 or more.

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