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:
Jan. 13, 2015
Filed:
Jun. 01, 2011
Mohan Prabhu Kuvettu, Faridabad, IN;
Manish Agarwal, Faridabad, IN;
Arumugam Velayutham Karthikeyani, Faridabad, IN;
Balaiah Swamy, Faridabad, IN;
Biswanath Sarkar, Faridabad, IN;
Mitra Bhanu Patel, Faridabad, IN;
Santanam Rajagopal, Faridabad, IN;
Mohan Prabhu Kuvettu, Faridabad, IN;
Manish Agarwal, Faridabad, IN;
Arumugam Velayutham Karthikeyani, Faridabad, IN;
Balaiah Swamy, Faridabad, IN;
Biswanath Sarkar, Faridabad, IN;
Mitra Bhanu Patel, Faridabad, IN;
Santanam Rajagopal, Faridabad, IN;
Indian Oil Corporation Limited, Faridabad, IN;
Abstract
The present invention relates a metal passivator additive comprising: a rare earth component; alumina; clay; colloidal silica; and a zeolite having high silica to alumina ratio. The present invention also relates to a process for preparing a metal passivator additive, said process comprising: preparing a rare earth slurry by mixing rare earth component with water; obtaining an alumina gel by treating alumina slurry with an acid, wherein the alumina slurry is prepared by mixing alumina and water; mixing the alumina gel and the rare earth slurry to obtain a slurry mixture; adding a colloidal silica to the slurry mixture; preparing a clay slurry by mixing clay and a dispersant; combining the clay slurry and the slurry mixture to obtain a rare earth-binder-filler slurry; obtaining an additive precursor slurry by mixing a zeolite having high silica to alumina ratio to the rare earth-binder-filler slurry; spray-drying the additive precursor slurry to obtain a spray-dried product; and calcining the spray-dried product to obtain the metal passivator additive.