This invention relates to compositions and {HEAD ~ systems} having {TAIL ~ utility} in numerous situations, including particular solvent cleaning systems, as well as refrigerant lubricants and compatibilizing agents, and to methods which utilize such compositions and systems 
This invention relates to compositions and { HEAD ~ systems } having { TAIL ~ utility } in numerous situations , including particular solvent cleaning systems , as well as refrigerant lubricants and compatibilizing agents , and to methods which utilize such compositions and systems
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