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:
Feb. 03, 1998
Filed:
May. 31, 1996
Applicant:
Inventors:
Deepak Kumar Tuli, Faridabad-121006, IN;
Sabyasachi Sinha Ray, New Delhi 110044, IN;
Rakesh Sarin, Faridabad, Haryana, IN;
Madan Mohan Rai, Faridabad, IN;
Sobhan Ghosh, Faridabad, IN;
Akhilesh Kumar Bhatnagar, Faridabad, Haryana, IN;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
585533 ; 585255 ; 585326 ; 585329 ; 585324 ; 585330 ; 585520 ;
Abstract
A process for the preparation of oligomers which are used in synthetic lubricant base stocks. The oligomers are prepared by contacting a mixture of linear olefins and n-paraffins contained in cracked refinery streams having 6 to 24 carbon atoms with activated Y-zeolites. The oligomers and unreacted monomers are subjected to the step of hydrogenation and the lower saturated paraffins are separated therefrom to produce synthetic lubricant base stock.