Di-quaternary ammonium salts of. cap alpha. -1,4-thiazine alkanephosphonic acids
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
- Resource Relation:
- Patent File Date: Filed date 14 Oct 1980
- Country of Publication:
- United States
- Language:
- English
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cap alpha. -1,4-thiazine alkanephosphonic acids as corrosion inhibitors
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Related Subjects
CORROSION INHIBITORS
CHEMICAL COMPOSITION
OIL WELLS
WELL SERVICING
ADDITIVES
ALCOHOLS
AQUEOUS SOLUTIONS
FORMAMIDE
GERMICIDES
PETROLEUM
PHOSPHONIC ACIDS
QUATERNARY COMPOUNDS
SCALE CONTROL
SOLVENTS
TECHNOLOGY UTILIZATION
WATER
WATERFLOODING
AMIDES
AMINES
AMMONIUM COMPOUNDS
CONTROL
DISPERSIONS
ENERGY SOURCES
FLUID INJECTION
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
MIXTURES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
OXYGEN COMPOUNDS
SOLUTIONS
WELLS
020300* - Petroleum- Drilling & Production