NOVEL PHOSPHONOCARBOXYLIC ACID ESTERS

摘要

Phosphono or phosphino acids, in which at least one carboxyl group is esterified with a C6-25 alkyl, alkaryl or alkenyl group, are effective as oil-soluble scale inhibitors, and as wax or asphaltene inhibitors or dispersants. A method for making and the use of the aforesaid esters is also disclosed.