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:
Dec. 20, 1983
Filed:
Jun. 11, 1981
Applicant:
Inventor:
Jack C Cowan, Lafayette, LA (US);
Assignee:
Venture Chemicals, Inc., Lafayette, LA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
252 / ; 252 / ; 252 / ; 2601 / ; 260401 ; 2604045 ;
Abstract
The invention provides novel organophilic derivatives of polyphenolic compounds which are readily soluble and/or dispersible in hydrocarbons to prepare oil base well-working compositions having a low filter loss. These fluid loss additives are obtained by reacting together one or more polyphenolic acid compounds with one or more polyamino compounds and a polyvalent metallic cation compound. The invention also provides a method of preparing organophilic ammonium salts of polyphenolic compounds of enhanced stability and oil solubility, and well-working fluids containing these salts.