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:
Sep. 18, 2012
Filed:
Oct. 25, 2007
Kenichi Fujita, Chiba, JP;
Kenichi Fujita, Chiba, JP;
Sumitomo Metal Mining Co., Ltd., Tokyo, JP;
Abstract
To provide a transparent resin molded product with less yellowing due to thermal deterioration of a dispersant by melting and kneading during molding process, and having excellent visible light transmittance and excellent heat ray shielding function. Then, a high heat resistant masterbatch is provided, which is used for manufacturing a heat ray shielding transparent molded resin, comprising: a thermoplastic resin; composite tungsten oxide particles expressed by a general formula WO(satisfying 2.45≦X≦2.999) and/or composite tungsten oxide particles expressed by a general formula MWO(satisfying 0.1≦Y≦0.5, 2.2≦Z 3.0) and having a crystal structure of hexagonal crystal; and a high heat resistant dispersant having a thermal decomposition temperature of 230° C. or more, satisfying a range of 10≧[weight of the high heat resistant dispersant/(weights of tungsten oxide particles and/or composite tungsten oxide particles)]≧0.5.