demulsifiers and corrosion inhibitors for use in industrial processes and oil field and refinery processes, demulsifiers for use in pharmaceutical processes, chemicals for use in the petroleum industry, hydrogen sulfide scavengers for use in the natural gas and petroleum industries, chemical fuel additives, drilling fluid additives, oil and gas well service chemicals, crude oil production chemicals, chemicals for use as natural gas pipeline aids, oil field water treatment chemicals, chemical additives for use by refineries, antifoamers, defoamers, chemical flotation aids