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:
Mar. 26, 1985
Filed:
Mar. 15, 1983
Applicant:
Inventor:
Don P Duncan, Mt. Pleasant, SC (US);
Assignee:
Westvaco Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09F / ; C09F / ;
U.S. Cl.
CPC ...
260 976 ; 260 977 ; 260 98 ; 260100 ;
Abstract
Partial hydrogenation and sulfur reduction of tall oil rosin process is disclosed whereby the olefinic double bonds of the tall oil rosin resin acid mixture are selectively hydrogenated without reduction of the dehydroabietic acid aromatic double bonds by contacting the tall oil rosin with hydrogen in the presence of a palladium on carbon catalyst under conditions of pressure and temperature to produce a partially hydrogenated tall oil rosin of reduced sulfur content and an acid number no lower than 160.