Patent Number: 8,722,589

Title: Use of 1-alkyl-5-oxopyrrolidine-3-carboxylic esters as gas hydrate inhibitors with improved biodegradability

Abstract: The invention provides for the use of 1-alkyl-5-oxopyrrolidine-3-carboxylic esters, preparable by esterifying alcohols having from 1 to 100 hydroxyl groups with 1-alkyl-5-oxopyrrolidine-3-carboxylic acid, in amounts of from 0.01 to 2% by weight for preventing the formation of gas hydrates in aqueous phases which are in contact with a gaseous, liquid or solid organic phase.

Inventors: Leinweber; Dirk (Kelkheim, DE), Roesch; Alexander (Gimbsheim, DE), Feustel; Michael (Kongemheim, DE)

Assignee: Clariant Finance (BVI) Limited

International Classification: C09K 8/528 (20060101); C09K 8/60 (20060101); C09K 8/54 (20060101)

Expiration Date: 5/13/12018