| 摘要 |
A hydrate inhibitor comprising a blend of an additive (i) and at least one of an additive (ii) and an additive (iii) wherein additive (i) is a polymer of an ethylenically unsaturated N-heterocyclic carbonyl compound, with 6-8 ring atoms in the heterocyclic ring, additive (ii) is a corrosion inhibitor and additive (iii) is a salt of formula (I): R 1 (R 2 )XR 3 + Y - 1/v, I wherein each of R 1 , R 2 and R 3 is bonded directly to X, each of R 1 and R 2 , which may be the same or different is an alkyl group of at least 4 carbons, X is S, NR 4 or PR 4 , wherein each of R 3 and R 4 which may be the same or different represents hydrogen or an organic group, with the proviso that at least one of R 3 and R 4 is an organic group of at least 4 carbons, especially at least 5 carbons, and Y is an anion of valency v, wherein v is an integer of 1-4.
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