Patent ID: 8323625

Claim:
Cocoon-shaped rutile-type titanium dioxide having a specific surface area of 120 to 180 m 2 /g in the form of oriented and aggregated rod-shaped particles, having a major axial plane and a minor axial direction, in which the major axial planes of rod-shaped particles each having a minor axial diameter of 3 to 10 nm are oriented and aggregated in the minor axial direction, wherein the oriented and aggregated particles have an apparent mean major axial length of 80 to 300 nm, an apparent mean minor axial length of 30 to 150 nm, and an apparent mean axial ratio (apparent mean major axial length/apparent mean minor axial length) of 1.1 to 4, and wherein both major axial ends of the oriented and aggregated particles are round- or elliptical-shaped.