Di-quaternary ammonium salts of. cap alpha. -1,4-thiazine alkanephosphonic acids

Patent · Tue Apr 06 04:00:00 EST 1982

OSTI ID:6485169

Quinlan, P M

Diquaternary ammonium salts of ..cap alpha..-1,4-thiazine alkanephosphonic acids are described which inhibit scale formation in aqueous systems. These salts are useful in the formulation of acid corrosion inhibitors and may be used as microbiocides. These compounds are prepared by reacting 2 mols of an ..cap alpha..-1,r-thiazine alkanephosphonic acid compound with one mol of di-alkylating agent in a suitable polar solvent. Solvents useful in the method are water, mixtures of water and lower alcohol, lower alcohols, dimethyl formamide, and dimethyl sulfonide. After combining the reactants in a suitable reactive medium, the reaction mixture is heated from 50 to 150 c with stirring to promote the alkylation reaction. After the reaction is complete, the diquaternary ammonium product may be isolated or used as is. 5 claims.

• Assignee: Petrolite Corp.
• Patent Number(s): US 4323461
• OSTI ID: 6485169
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
ADDITIVES
ALCOHOLS
AMIDES
AMINES
AMMONIUM COMPOUNDS
AQUEOUS SOLUTIONS
CHEMICAL COMPOSITION
CONTROL
CORROSION INHIBITORS
DISPERSIONS
ENERGY SOURCES
FLUID INJECTION
FORMAMIDE
FOSSIL FUELS
FUELS
GERMICIDES
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
MIXTURES
OIL WELLS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM
PHOSPHONIC ACIDS
QUATERNARY COMPOUNDS
SCALE CONTROL
SOLUTIONS
SOLVENTS
TECHNOLOGY UTILIZATION
WATER
WATERFLOODING
WELL SERVICING
WELLS