Claims
- 1. A composition for preventing or retarding the formation of gas hydrates or for reducing the tendency of gas hydrates to agglomerate comprising, by weight (a) 20-50% based on the total composition of a polymer or copolymer selected from the group consisting of (1) a terpolymer of 17-32% by weight vinyl pyrrolidone, 65-80% by weight vinyl caprolactam and 3-6% by weight of an ammonium derivative monomer having from 6 to 12 carbon atoms selected from the group consisting of a dialkyl aminoalkyl methacrylamide, a dialkyl dialkenyl ammonium halide and a dialkylamino alkyl acrylate or methacrylate, (2) a copolymer of vinyl pyrrolidone and vinyl caprolactam, and (3) a homopolymer of vinyl caprolactam, and (b) the rest of the composition being an alcohol containing one hydroxy group and having 3 to 5 carbon atoms selected from the group consisting of propyl alcohol, sec-butyl alcohol, n-butyl alcohol, tert-butyl alcohol, isopropyl alcohol and 1-pentanol.
- 2. A composition according to claim 1 wherein, in (1) said ammonium derivative monomer is dimethylaminoethyl methacrylate.
- 3. A composition according to claim 1 wherein said copolymer comprises vinyl pyrrolidone and vinyl caprolactam.
- 4. The composition according to claim 1 wherein said polymer is a homopolymer of vinyl caprolactam.
Parent Case Info
This application is a continuation-in-part application of Ser. No. 08/910,128, filed Aug. 13, 1997, now abandoned.
US Referenced Citations (6)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
910128 |
Aug 1997 |
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