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:
Jul. 07, 1987
Filed:
Oct. 26, 1984
Applicant:
Inventors:
Jurgen Fock, Dusseldorf, DE;
Hans Rott, Essen, DE;
Assignee:
TH. Goldschmidt AG, Essen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ; C07C / ;
U.S. Cl.
CPC ...
252343 ; 252358 ; 252340 ; 560189 ; 526320 ;
Abstract
For demulsifying water containing crude oil, copolymers are used which are obtained by copolymerizing one or several polyoxyalkylene ether(s) of allyl and/or methallyl alcohol with vinyl esters of lower carboxylic acids or mixtures of vinyl esters of lower carboxylic acids with up to 50 mole percent of esters of acrylic or methacrylic acid or ethers of allyl or methallyl alcohol and fatty alcohols, the quotient of the average molecular weight of the polyoxyalkylene ethers corresponding to their molar fraction and the number of moles of the compounds to be copolymerized being 20 to 200, as demulsifiers for water containing crude oil.