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. 15, 1997
Filed:
Jan. 10, 1995
Ulfert Cornelis Klomp, Amsterdam, NL;
Vitold Raimond Kruka, Houston, TX (US);
Rene Reijnhart, Amsterdam, NL;
Anton Jacobus Weisenborn, Amsterdam, NL;
Shell Oil Company, Houston, TX (US);
Abstract
The plugging of conduits containing a mixture of low-boiling hydrocarbons and water in inhibited by adding to the mixture an effective amount of at least one alkylated compound of the general formula formula ##STR1## wherein R.sub.1 and R.sub.2 each are independently chosen from normal or branched alkyls containing a chain of at least 4 carbon atoms, R.sub.5 is an organic moiety containing a chain of at least 4 atoms, X is S, N--R.sub.4 or P--R.sub.4, R.sub.4 is H or an organic substituent, suitably an alkyl or alkenyl group having from 8 to 20 carbon atoms, and Y-- is an anion.