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. 07, 2009
Filed:
Aug. 07, 2006
Yoshinari Koyama, Sodegaura, JP;
Motoko Asada, Sodegaura, JP;
Yoshinari Koyama, Sodegaura, JP;
Motoko Asada, Sodegaura, JP;
Nissan Chemical Industries, Ltd., Tokyo, JP;
Abstract
There is provided a stable sol of zirconium oxide-tin oxide composite colloidal particles and a method of producing the same, a hard coat material applied for a surface of a plastic lens, and an optical member. The present invention relates to a sol comprising zirconium oxide-tin oxide composite colloidal particles (A), wherein a molar ratio of oxide in the zirconium oxide-tin oxide composite colloidal particles (A) is 0.02-0.4 as SnO/ZrO, and the zirconium oxide-tin oxide composite colloidal particles (A) have a structure in which zirconium oxide colloidal particles and tin oxide colloidal particles are bonded together, and a primary particle diameter of 2-100 nm; and also relays to a coating composition comprising a silicon-containing substance (S) of an organic silicon compound or a hydrolysate thereof, and a sol comprising zirconium oxide-tin oxide composite colloidal particles (A), and an optical member having a cured coating formed from the coating composition.