作者: Marius Kuemin , Konrad Geissler
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摘要: Embodiments of the present disclosure include cleaning processes, closed loop machines, and methods an article. The process includes contacting a surface article with composition in chamber, where at least about 85 percent by weight organic solvents, based on total composition, 5 solvents is propylene glycol, to clean article, collecting including contaminants, recovering via distillation, distillation apparatus removes contaminants from connected chamber stream.