초록 ▼

A method of inhibiting the deposition of paraffin wax, asphaltene, or mixtures thereof in a crude oil contaminated with paraffin wax, asphaltene, or mixtures thereof and susceptible to such depositions comprising the step of incorporating into said crude oil an effective deposition inhibiting amount

A method of inhibiting the deposition of paraffin wax, asphaltene, or mixtures thereof in a crude oil contaminated with paraffin wax, asphaltene, or mixtures thereof and susceptible to such depositions comprising the step of incorporating into said crude oil an effective deposition inhibiting amount of an oil soluble organic compound having at least one oleophobic and hydrophobic fluoroaliphatic group, and antideposition stabilized crude oil compositions containing said compound, are disclosed.

대표청구항 ▼

A method of inhibiting deposition of paraffin wax, asphaltene, or mixtures thereof in a crude oil contaminated therewith and susceptible to such deposition comprising incorporating into said crude oil an effective deposition inhibiting amount of an oil soluble organic compound of the formula [(Rf)nR

A method of inhibiting deposition of paraffin wax, asphaltene, or mixtures thereof in a crude oil contaminated therewith and susceptible to such deposition comprising incorporating into said crude oil an effective deposition inhibiting amount of an oil soluble organic compound of the formula [(Rf)nR′]mZ(I) wherein n is an integer of 1-3; m is an integer of 1-5000; Rf is an inert, stable, oleophobic and hydrophobic fluoroaliphatic group having about 4 to about 20 carbon atoms; R′is a direct bond or an organic linking group having a valency of n+1 and is covalently bonded to both Rf and Z, and a) when n is 1 R′is selected from (i) －C1-C8 alkylene－, －phenylene－, －C1-C8alkylene－R1-C1-8alkylene－, －C3-C8 alkylene－R1－, －C1-2alkylene－R1″－R1-C1-8alkylene, －R1-C1-8alkylene－R1′－, －R1－, －R1－phenylene－, －R1－phenylene－R1′－, －R1－phenylene－C1-8 alkylene, and -phenylene-R1- wherein in each case, said alkylene is straight, or branched, or cyclic and in each case said alkylene and phenylene are independently unsubstituted or substituted by hydroxy, halo, nitro, carboxy, C1-6 alkoxy, amino, C1-6 alkanoyloxy, or C1-6 alkanoylamino and said R1 and R1′- are each independently selected from －NR2－, －CO－, －N(R2)CO－, －CON(R2)－, －N(R2)COO－, －OOCN(R2)－, －S－, －SO－, －SO2－, －N(R2)SO2－, －SO2N(R2)－, －N(R2)CON－(R2)－, －COO－, －OOC－, －SO2O－, －OSO2－, －OSO2O－, [Figure] and R1△is selected from －NR2－, －CO－, －N(R2)CO－, －CON(R2)－, －NR2COO－, －OOCN(R2)－, －S－, －SO－, －SO2－, －N(R2)SO2－, －SO2N(R2)－, －N(R2)CON(R2)－, －COO－, －SO2O－, －OSO2－, －OSO2O－, －OCOO－, [Figure] and R2 is H, C1-6 alkyl which is unsubstituted or substituted by C1-6 alkoxy, halo, hydroxy, carboxy, C1-6 carbalkoxy, C1-6 alkanoylamino, or C1-6 alkanoyloxy; or the nitrogen to which R2 is attached is quaternized by further being bound to R3 which R3 is H, C1-6 alkyl, hydroxy-C1-6 alkyl, C1-6 alkoxy, C1-6 alkanoyloxy, or C1-6 carbalkoxy, the charge of the quaternized nitrogen being balanced by an anion; and (ii) an ionically bridged group of the formulae －(Ra′)s Q�T (Rb′)t(II) or －(Ra′)s T�Q (Rb′)t(III) wherein Ra′is －C1-8 alkylene－, －phenylene－, －C3-8 alkylene －R1－C1-8 alkylene－, －R1－C3-8 alkylene－, －R1－phenylene－, or －R1－phenylene－C1-8 alkylene－; Rb′is －C1-8 alkylene－, －phenylene－, －C1-8 alkylene －R1－C1-8 alkylene－, －C1-8 alkylene－R1－, －phenylene－R1－, or －C1-8 alkylene－phenylene－R1－; s and t are each independently zero or 1; and within said Ra′and Rb′, said alkylene and phenylene groups are unsubstituted or substituted by hydroxy, halo, nitro, carboxy, C1-6 alkoxy, amino, C1-6 alkanoyl, C1-6 carbalkoxy, C1-6 alkanoyloxy, or C1-6 alkanoylamino; T is a phenolic hydroxy residue, carboxy, a sulfoxy, a sulfato, or a phosphono group; and Q is －N(R2)2R3; (b) when n is 2, R′is selected from the trivalent analogs of the groups within (a) above and further selected from [Figure] which is unsubstituted or substituted by hydroxy, halo, nitro, carboxy, C1-6 alkoxy, amino, C1-6 alkanoyl, C1-6 carbalkoxy, C1-6 alkanoyloxy, or C1-6 alkanoylamino and still further selected from radicals of the formula [Figure] (IV) where u, v, and w are independently 0 or 1 and R0 is alkanetriyl, arenetriyl, or aralkanetriyl, each having up to 18 carbon atoms and each being uninterrupted or interrupted by －O－, －S－, or －N(R2)－; and (c) when n is 3, R′is selected from the tetravalent analogs of the groups within (b) above; and Z is a hydrocarbyl containing residue having a valency of n and is sufficiently oleophilic so as to impart an oil solubility to said compounds of at least 10 parts per million by weight of said asphaltenic crude oil.