Process of inhibiting scale formation in aqueous systems using quaternary ammonium salts of. cap alpha. -1,4-thiazine

Patent · Tue Apr 06 04:00:00 EST 1982

OSTI ID:6485173

Quinlan, P M

Quaternary ammonium salts of ..cap alpha..-1,4-thiazine alkanephosphonic acids are described which inhibit scale formation in aqueous systems. The compounds also can be used in formation of acid corrosion inhibitors, as sequestering agents, and as microbiocides. These compounds are prepared by reacting an ..cap alpha..-1,4-thiazine alkanephosphonic acid compound with an alkylating agent in a suitable polar solvent or a mixture of polar solvents. Examples of solvents are water, mixtures of water and lower alcohols, lower alcohols, dimethyl formamide, dimethyl sulfoxide, and hexamethyulphosphorotrimide. 10 claims.

• Assignee: Petrolite Corp.
• Patent Number(s): US 4323459
• OSTI ID: 6485173
• Country of Publication: United States
• Language: English

Related Subjects

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