Method for preparing quaternary ammonium salt of ester-lactone

A method for preparing a quaternary ammonium salt of an ester-lactone represented by the formula:

• ##STR11## in which w represents 0 or 1, x and y alternately represent 0 and 1, Z has a value from 0 to 4, R.sup.i, R.sup.ii, R.sup.iii and R.sup.iv, in instances where w is equal to 0, represent hydrogen or alkyl radicals at least one of which is a hydrocarbyl radical having from 50-200 carbon atoms;
• in instances where w is equal to 1 at least one of R.sup.i, R.sup.ii, R.sup.iii, R.sup.iv, R.sup.v or R.sup.vi, represents a hydrocarbyl radical of 50-200 carbon atoms and the remaining substituents are hydrogen or lower alkyl radicals, R is a divalent radical having from 2-10 carbon, or carbon and oxygen atoms, R.sup.vii is hydrogen or a hydrocarbyl radical, and X is an anion selected from the group consisting of chloride, bromide, sulfate and borate ions which comprises reacting an alkenylsuccinic acid anhydride in which the alkenyl radical has from about 50 to 200 carbon atoms with a haloalcohol represented by the formula X--R--OH in which R is a divalent radical having from 2 to 10 carbon, or carbon and oxygen atoms in the presence of an acid reacting catalyst selected from the group consisting of sulfuric acid, p-toluene sulfonic acid, phosphonic acid, hydrogen chloride, hydrogen bromide, sulfonated cation exchange resins and crystalline alumino-silicate in the acid form employing a mole ratio of 1 to 1.5 moles of said haloalcohol per mole of said anhydride to produce an ester-lactone intermediate product and reacting said ester-lactone intermediate with a tertiary amine represented by the formula:
• ##STR12## in which R.sup.vii is hydrogen or a hydrocarbyl radical having from 1 to 8 carbon atoms and z has a value from 0 to 4.