Reduction of residual organic chlorine in hydrocarbyl amines

A process for making a hydrocarbyl amine-containing gasoline range hydrocarbon having low residual organic chloride content wherein said hydrocarbyl amine is prepared by any process for chlorinating a hydrocarbyl group followed by reaction with an amine and wherein said hydrocarbyl amine contains residual organic chloride wherein the improvement comprises:

• (a) contacting said hydrocarbyl amine with a chlorine-displacing nucleophile selected from NaSCN, NaCN, NaSPh, and mixtures thereof wherein a portion of the residual chloride is converted from organic chloride to inorganic chloride;
• (b) removing said inorganic chloride;
• and
• (c) mixing said hydrocarbyl amine having reduced residual organic chloride content with a gasoline range hydrocarbon.

A process for making a polyisobutylene-dimethylaminopropyl-amine-containing gasoline range hydrocarbon having low residual organic chloride wherein said polyisobutylene-dimethylaminopropylamine is prepared by any process for chlorinating polyisobutylene followed by reaction with dimethylaminopropylamine and wherein said polyiso-butylene-dimethylaminopropylamine contains residual organic chloride the improvement comprising:

• (a) contacting said residual organic chloride-containing polyisobutylene-dimethylaminopropylamine with NaSCN dissolved in DMSO wherein a portion of the residual organic chloride is converted to NaCl such that the residual organic chloride is less than about 0.6% wt;
• (b) removing said NaCl;
• and
• (c) mixing said polyisobutylene-dimethylaminopropylamine having reduced residual organic chloride content with a gasoline range hydrocarbon wherein the amount of residual organic chloride in the gasoline range hydrocarbon is less than about 1 ppm.