Additives for inhibiting gas hydrate formation

Details Additives for inhibiting gas hydrate formation Additives for inhibiting gas hydrate formation

2007-03-28

2008-03-25

Eyler, Yvonne (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C560S179000, C562S553000, C562S574000, C564S152000, C564S158000

Reexamination Certificate

active

07348451

ABSTRACT:
The invention provides the use of compounds of the formula (1)whereR1, R2are each independently C1- to C22-alkyl, C2- to C22-alkenyl, C6- to C30-aryl or C7- to C30-alkylaryl,R3is C1- to C22-alkyl, C2- to C22-alkenyl, C6- to C30-aryl or C7- to C30-alkylaryl, —CHR5—COO−or —O−,R4is M, hydrogen or an organic radical which optionally contains heteroatoms and has from 1 to 100 carbon atoms,B is an optionally substituted C1- to C30-alkylene group,D is an organic radical which optionally contains heteroatoms and has from 1 to 600 carbon atoms,X, Y are each independently O or NR6,R5, R6are each independently hydrogen, C1- to C22-alkyl, C2- to C22-alkenyl, C6- to C30-aryl or C7- to C30-alkylaryl, andM is a cationas gas hydrate inhibitors.

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