Patent ID: 8268460

Claim:
A high heat resistant masterbatch, 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 M Y WO Z (satisfying 0.1≦Y≦0.5, 2.2≦Z≦3.0, and element M is at least one member selected from the group consisting of Cs, Rb, K, Tl, In, Ba, Li, Ca, Sr, Fe, Sn, Al, and Cu) and having a crystal structure of hexagonal crystal; and a high heat resistant dispersant having an acryl main chain and a hydroxyl group or an epoxy group, and having a thermal decomposition temperature of 230° C. or more, satisfying a range of 10≧[weight of the high heat resistant dispersant/(weight of composite tungsten oxide particles)]≧0.5.