摘要:
The invention relates to polyketone compounds and the at least partially hydrogenated products thereof, the use of said polyketone compounds and/or the at least partially hydrogenated products thereof as plasticizers, processes of making polyketone compounds and the at least partially hydrogenated products thereof, compositions comprising the polyketone compounds and/or the at least partially hydrogenated products thereof, and to articles formed from products of the invention.
摘要:
The invention relates to polyketone compounds and the at least partially hydrogenated products thereof, the use of said polyketone compounds and/or the at least partially hydrogenated products thereof as plasticizers, processes of making polyketone compounds and the at least partially hydrogenated products thereof, compositions comprising the polyketone compounds and/or the at least partially hydrogenated products thereof, and to articles formed from products of the invention.
摘要:
A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate forming constituents is disclosed. More specifically, the method can be used in treating a petroleum fluid stream such as natural gas conveyed in a pipe to inhibit the formation of a hydrate restriction in the pipe. The hydrate inhibitors used for practicing the method are substantially water soluble polymers formed from a cyclic imino ether. Some examples of such inhibitors include various N-acyl polyalkyleneimines, such as N-acyl substituted polyethyleneimine, N-acyl substituted polypropyleneimine, N-acyl substituted polybutyleneimine, N-acyl substituted polypentyleneimine and copolymers thereof. Also, such N-acyl substituted polyalkyleneimines can be used in various ratios with other substantially water soluble polymers and copolymers. Preferably, a solvent such as water, brine, alcohol, or mixtures thereof is used to produce an inhibitor solution or mixture to facilitate treatment of the petroleum fluid stream.
摘要:
It now has been discovered that lubricating compositions containing an additive formed by reacting Mo(CO).sub.6 with dixanthogen can be enhanced by the inclusion in the composition ligands selected from polydentate ligands and mixtures thereof. Thus, the present invention comprises a major amount of an aoil of lubricating viscosity and a minor but effective amount of an additive formed by reacting Mo(CO).sub.6 with dixanthogen of the formula (ROCS.sub.2).sub.2 wherein R is an organo group having a sufficient number of carbon atoms to render the additive soluble in the oil; and a polydentate ligand or mixtures thereof, the mole ratio of additive to ligand being in the range of from about 1:1 to about 1:4.
摘要:
A method for treating a fluid having hydrate-forming constituents is provided. In one or more embodiments, the method includes including a mixture (110) comprising glycol and one or more kinetic inhibitors to a fluid (105) that includes one or more hydrate-forming constituents and water to provide a treated fluid comprising the glycol, one or more kinetic inhibitors, one or more hydrate-forming constituents and water. The treated fluid (125) is then separated at conditions sufficient to provide an oil phase stream and an aqueous phase stream, wherein the aqueous phase stream includes one or more kinetic inhibitors, glycol and water.
摘要:
A method for inhibiting the formation of gas hydrates in a petroleum fluid having hydrate-forming constituents is claimed. More specifically, the method can be used to treat a petroleum fluid, such as natural gas conveyed in a pipe, to inhibit the formation of a hydrate flow restriction in the pipe. The preferred hydrate inhibitors used for practicing the method comprise substantially water soluble homopolymers and copolymers of isopropylmethacrylamide derivatives which have a bimodal molecular weight distribution.
摘要:
A method for treating a fluid having hydrate-forming constituents is provided. In one or more embodiments, the method includes including a mixture (110) comprising glycol and one or more kinetic inhibitors to a fluid (105) that includes one or more hydrate-forming constituents and water to provide a treated fluid comprising the glycol, one or more kinetic inhibitors, one or more hydrate-forming constituents and water. The treated fluid (125) is then separated at conditions sufficient to provide an oil phase stream and an aqueous phase stream, wherein the aqueous phase stream includes one or more kinetic inhibitors, glycol and water.
摘要:
The addition of a thiodixanthogen and a metal thiophosphate to a lubricating oil results in an unexpected synergistic improvement in the antiwear performance of the oil. Octylthiodixanthogen and zinc dialkyldithiophosphate are most preferred additives.
摘要:
Triglyceride PVC plasticizers can be produced by recovery of C5 to C10 aldehydes having low average levels of branching from a hydroformylation product, oxidizing the aldehydes with oxygen and/or air to form an acid, recovery of the resulting acid, and esterification with glycerol. Plasticizer compositions including such products or linear triglycerides combined with a secondary plasticizer and articles made therefrom are disclosed.
摘要:
A method for inhibiting the formation of clathrate hydrates in a fluid having hydrate-forming constituents involves treating the fluid with an inhibitor comprising a substantially water soluble polymer having a polymer backbone .with a pendant C.sub.1 --C.sub.3 alkyl group; the polymer having an average molecular weight between about 1,000 and about 6,000,000. Preferably, the pendant alkyl group is a methyl group. The rate of nucleation, growth, and/or agglomeration of gas hydrate crystals in a petroleum fluid stream Is reduced using the alkylated polymer backbone inhibitor, thereby inhibiting the formation of a hydrate blockage in the pipe conveying the petroleum fluid stream. Test results are disclosed which unexpectedly show that alkylating the polymer backbone with a methyl group will produce a subcooling for the alkylated polymer that is at least about 2.degree. F. (about 1.1.degree. C.) greater than its nonalkylated counterpart. The inhibitor can be used conveniently at low concentrations, for example in the range of from about 0.01% to about 5% by weight of the water present in the oil or gas stream, to effectively treat a petroleum fluid having a water phase.