Abstract: An additive composition for a metalworking fluid which comprises a reaction product obtainable by the reaction between a molar excess of an anhydride and an amine, wherein the amine is at least one amino alkyl mono- or di- alkanolamine, in particular having a structural formula (I): HOOC—R—CO—NH—X—N(R′)—Y—O—CO—R′′—COOH, wherein: X represents an alkyl group having 1 to 12 carbon atoms, preferably, 2 to 8 carbon atoms and more preferably 3 to 6 carbon atoms; Y represents a hydrocarbyl group having 2 to 12 carbon atoms, preferably 2 to 6 carbon atoms; R′ represents an alkyl or alkanol groups having 2 to 12 carbon atoms; and R and R″ independently represent hydrocarbyl groups which have up to 48 carbon atoms, preferably 2 to 28; more preferably 6 to 13 carbon atoms.

Abstract: An additive with good anti-corrosion and lubrication properties is disclosed for use in aqueous metal working fluids. The additive comprises a fatty acid substituted, carboxylated bis-amidoamine.

Abstract: Novel anionic emulsifiers are disclosed as well as their preparation by reacting an ammonium or substituted ammonium methyl isethionate alcohol with C.sub.22 -cycloaliphatic tricarboxylic acid of the formula ##STR1## where x and y are integers from 3 to 9, and x and y together equal 12. The oil-soluble emulsifiers are effective in emulsifiable concentrates used in agricultural chemical delivery systems.