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:
Feb. 04, 2020
Filed:
Jul. 31, 2014
M-i Drilling Fluids Uk Limited, Aberdeen, GB;
Neil Grainger, Aberdeen, GB;
Neil David Feasey, Basingstoke, GB;
M-I Drilling Fluids UK Limited, Aberdeen, GB;
Abstract
Quaternary ammonium compounds and compositions comprising the compounds are disclosed. The compositions are valuable as gas hydrate inhibitors in the oil and gas exploration, recovery and processing industries. The compounds and compositions may have improved biodegradability and reduced toxicity when compared with benchmark materials. Quaternary ammonium compounds of the present disclosure have the formula (I) in which R is Calkyl, Caryl, or Calkyl-Caryl; Ris hydrogen or a group of formula —C(═O)X; and Ris hydrogen or a group of formula —C(═O)Y, provided that Rand Rare not both hydrogen; X and Y are each independently a hydrogen, Calkyl or Calkenyl group, and Z is a Calkyl or Calkenyl group; each D is independently Calkylene; and Ais an anion.