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:
Jun. 04, 2019
Filed:
May. 26, 2014
Sumitomo Metal Mining Co., Ltd., Tokyo, JP;
Keisuke Machida, Isa, JP;
Kenichi Fujita, Isa, JP;
SUMITOMO METAL MINING CO., LTD., Tokyo, JP;
Abstract
By use of composite tungsten oxide particles having high heat ray-shielding effect while mainly composed of polyvinyl acetal resin, a heat ray-shielding particle is provided, having excellent optical performance and high weather resistance, which includes composite tungsten oxide particle expressed by general formula MWO(wherein M is one or more kinds of element selected from Cs, Rb, K, Tl, In, Ba, Li, Ca, Sr, Fe, Sn, Al, and Cu, satisfying 0.1≤y≤0.5, 2.2≤z≤3.0) and having hexagonal crystal structure; and at least one of a dispersant having acrylic backbone, having amino group as functional group, and having thermal decomposition temperature of 200° C. or more, and dispersant having acrylic backbone, having hydroxyl group or carboxyl group as functional group, and having thermal decomposition temperature of 200° C. or more, wherein content of organic solvent having boiling point of 120° C. or less is 5 mass % or less.