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. 24, 1978
Filed:
Oct. 12, 1976
Applicant:
Inventors:
Ronald W Reynolds, Wilmington, DE (US);
John D Tice, Wilmington, DE (US);
John S Nutter, Glen Mills, PA (US);
Assignee:
Suntech, Inc., Wayne, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C10G / ; C10G / ;
U.S. Cl.
CPC ...
208 25 ; 208 14 ;
Abstract
In the process of manufacturing a refrigeration oil where an oil stock is dewaxed by forming a complex with urea in the presence of an activator, the improvement of adding hot vacuum gas oil to the separated urea complex whereby the activator is flashed off and is recycled for reuse and the slurry of the urea complex in the gas oil is treated with hot water to break the adduct and separate a water-urea mixture and oil and paraffin. The improved method enables accurate and uniform temperature control and degradation of urea is suppressed.