Controlled gelation of hydrocarbon solutions containing interpolymer complexes

Patent · Tue Mar 03 00:00:00 EST 1987

OSTI ID:6713621

Lundberg, R D; Duvdevani, I; Peiffer, D G

A process is described for forming a thickened fluid having a viscosity of at least about 30 cps at 25/sup 0/C. at a shear rate of 60 sec/sup -1/ which includes the steps of: (a) forming two identical solvent systems of an organic liquid selected from the group consisting of aromatic hydrocarbons, cyclic aliphatic ethers, aliphatic ethers and aliphatic esters and mixtures thereof and a polar cosolvent selected from the group consisting of alcohols, amines, amides and phosphates having a solubility parameter of at least 10.0. Each of two solvent systems contain the same organic liquid and the same polar cosolvent. The polar cosolvent is less than about 15 weight percent of each solvent system of the organic liquid and the polar cosolvent, a viscosity of each solvent system being less than about 100 cps at 25/sup 0/C. at a shear rate of 60 sec/sup -1/; (b) dissolving, an anionic polymer which is water insoluble in the first solvent system to form a first solution wherein the concentration of the anionic polymer is about 0.5 to about 10.0 weight percent. The organic polymer has about 10 to about 200 meq. of neutralized anionic groups per 100 grams of anionic polymer. The anionic groups are 50 to 100 mole percent neutralized. A viscosity of the first solution is less than about 2,000 cps at 25/sup 0/C. at a shear rate of 60 sec/sup -1/.

• Assignee: Exxon Research and Engineering Co., Florham Park, NJ
• Patent Number(s): US 4647603
• OSTI ID: 6713621
• Resource Relation: Patent File Date: Filed date 26 Jun 1985
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
HYDROCARBONS
GELATION
ALCOHOLS
AMIDES
AMINES
AQUEOUS SOLUTIONS
AROMATICS
DISSOLUTION
ESTERS
ETHERS
MEDIUM TEMPERATURE
ORGANIC SOLVENTS
PHOSPHATES
POLYMERS
SHEAR
SOLUBILITY
VISCOSITY
DISPERSIONS
HYDROXY COMPOUNDS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
SOLUTIONS
SOLVENTS
400201* - Chemical & Physicochemical Properties