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:
Apr. 06, 2010
Filed:
Apr. 11, 2006
Yutaka Ohmori, Sodegaura, JP;
Hirokazu Kato, Sodegaura, JP;
Kenji Yamaguchi, Sodegaura, JP;
Nissan Chemical Industries, Ltd., Tokyo, JP;
Abstract
There is provided an acidic zirconia sol having compatibility of particle properties and binding properties, and a production method of the same. The present invention relates to a production method of an acidic zirconia sol containing zirconia particles having a particle diameter of less than 20 nm in a content of 10 to 50% by mass, based on the mass of all zirconia particles including: a first process in which an alkaline zirconia sol (A) and a zirconium salt (B) are mixed in a mass ratio (Bs/As) ranging from 0.2 to 5.0 of a mass of a solid content (Bs) which is converted into an amount of ZrOin the zirconium salt (B) to a mass of a solid content (As) which is converted into an amount of ZrOin the alkaline zirconia sol (A); and a second process in which the resultant mixture is reacted at 80 to 250° C. to produce an acidic zirconia sol.