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:
Jan. 14, 2014
Filed:
Dec. 24, 2010
Tatsuya Iwamoto, Kouka, JP;
Kohei Kani, Kouka, JP;
Tatsuya Iwamoto, Kouka, JP;
Kohei Kani, Kouka, JP;
Sekisui Chemical Co., Ltd., Osaka, JP;
Abstract
An interlayer film for a laminated glass includes a first layer, a second layer laminated on one face of the first layer. Each of the first layer and the second layer contains a polyvinyl acetal resin and a plasticizer. The hydroxyl content of the polyvinyl acetal resin in the first layer is lower than the hydroxyl content of the polyvinyl acetal resin in the second layer. The difference between the hydroxyl content of the polyvinyl acetal resin in the first layer and the hydroxyl content of the polyvinyl acetal resin in the second layer is at most 9.2 mol %. If the difference in the content is higher than 8.5 mol % and at most 9.2 mol %, a degree of acetylation of the polyvinyl acetal resin of the polyvinyl acetal resin in the first layer is at most 8 mol %.