MOLECULAR LEVEL CLEANING OF CONTAMINANTS FROM PARTS UTILIZING AN ENVIRONMENTALLY SAFE SOLVENT

摘要

A solvent mixture for use in a vapor degreasing system, said solvent mixture comprising: (a) about 85 wt. % to less than about 96.5 wt. % n-propyl bromide; (b) about 3.5 wt. % to less than about 15 657 כ" ז באייר התשס" ג - May 29, 2003 wt. % of a mixture of low boiling solvents, said solvent mixture comprising about 0.5 wt. % to about wt. % nitromethane, about 0.5 wt. % to about 1 wt. % 1. 2-a-butylene oxide, and about 2.5 wt. % to about 3 wt. % 1,3-dioxolane; and (c) an effective amount of up to about 5 wt. % of at least one additive selected from the group consisting of sec-butanol, ethanol, and methanol provided that sec-butanol comprises 0 wt. % to about 3 wt. % of said solvent mixture.