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:
Aug. 03, 2021
Filed:
Dec. 21, 2017
Shell Oil Company, Houston, TX (US);
Eglantine Armelle Christiane Colette Marie Albe, Rotterdam, NL;
Godfried Johannes Aarts, Amsterdam, NL;
José Luís Moniz Jardim, Amsterdam, NL;
Cornelis Hyacinthus Maria Van Der Hulst, Amsterdam, NL;
Ralf Gunnar Meister, Amsterdam, NL;
SHELL OIL COMPANY, Houston, TX (US);
Abstract
The present invention relates to a method for reducing the cloud point of a base oil with high saturates/paraffinic content to below 0° C., wherein the method comprises subjecting said base oils to a cloud point reduction step comprising adding said base oil to a solvent mixture, wherein the solvent mixture comprises a paraffin naphtha fraction and a co-solvent to obtain a solvent treatment mixture; and subjecting the solvent treatment mixture to a solvent de-waxing step.