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:
Jul. 04, 2023
Filed:
Jan. 08, 2020
Sekisui Chemical Co., Ltd., Osaka, JP;
Yuusuke Oota, Moriyama, JP;
Atsushi Nohara, Kusatsu, JP;
Daisuke Nakajima, Land Nordrhein-Westfalen, DE;
SEKISUI CHEMICAL CO., LTD., Osaka, JP;
Abstract
An interlayer film for laminated glass of the present invention comprises a thermoplastic resin, a carboxylic acid, and an alkali (alkaline earth) metal, wherein, when a molar concentration per unit volume of the alkali (alkaline earth) metal in the interlayer film for laminated glass, measured by ICP atomic emission spectrophotometry is A (mol/m); a molar concentration per unit volume of the carboxylic acid in the interlayer film for laminated glass, measured by GC-MS is B (mol/m); a molar concentration per unit volume of the carboxylic acid in the interlayer film for laminated glass, measured by GC-MS after a hydrochloric acid aqueous solution is added to the interlayer film for laminated glass to be left at 23° C. for 12 hours is Y; and a molar concentration per unit volume of the carboxylic acid, obtained by subtracting the molar concentration B from the concentration Y is D (mol/m), the molar concentration A is more than 0.35 mol/mand less than 1.00 mol/m, and a carboxylic acid isolation ratio (1) represented by (1−D/A)×100 is 40% or less.