METHOD OF INHIBITION OF FORMATION OF HYDRATES Russian patent published in 1999 - IPC

FIELD: chemistry of polymers. SUBSTANCE: described is method of inhibition of clatrate hydrates in fluid medium containing hydrate-forming components which comprises treating fluid medium with inhibitor containing substantially water-soluble copolymer. Copolymer is N- methyl-N-vinyl acetamide copolymer (vinyl lactam of general formula I wherein n is 1-3, sum of X and Y is mean number sufficient for obtaining average molecular weight between 1000 and 6,000,000. Described are method variants. Method is used in treating stream of petroleum fluid medium, e.g. natural gas being transported through pipeline. EFFECT: simplified process. 10 cl 1 dwg, 1 tbl