This invention relates to compositions and systems having {HEAD ~ utility} in {TAIL ~ 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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This invention relates to compositions and systems having { HEAD ~ utility } in { TAIL ~ 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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