24-06-2021 дата публикации
Номер: US20210188745A1
A cleaning method may include: bringing an article to be cleaned into contact with a liquid-phase solvent composition including 1-chloro-2,3,3-trifluoro-1-propene and 1-chloro-2,2,3,3-tetrafluoropropane; and exposing the article to be cleaned to steam generated by evaporating the liquid-phase solvent composition. In the liquid-phase composition, a proportion of a content of 1-chloro-2,2,3,3-tetrafluoropropane to a total of a content of 1-chloro-2,3,3-trifluoro-1-propene and a content of 1-chloro-2,2,3,3-tetrafluoropropane may be 0.0001 to 1 mass %. 110-. (canceled)11. A cleaning method , comprising:bringing an article to be cleaned into contact with a liquid-phase solvent composition comprising 1-chloro-2,3,3-trifluoro-1-propene and 1-chloro-2,2,3,3-tetrafluoropropane; andexposing the article to be cleaned to steam generated by evaporating the liquid-phase solvent composition,wherein, in the liquid-phase composition, a proportion of a content of 1-chloro-2,2,3,3-tetrafluoropropane to a total of a content of 1-chloro-2,3,3-trifluoro-1-propene and a content of 1-chloro-2,2,3,3-tetrafluoropropane is 0.0001 to 1 mass %.12. The method of claim 11 , wherein a proportion of a content of 1-chloro-2 claim 11 ,3 claim 11 ,3-trifluoro-1-propene to a total amount of the liquid-phase solvent composition is 80 mass % or more.13. The method of claim 11 , wherein the 1-chloro-2 claim 11 ,3 claim 11 ,3-trifluoro-1-propene consists of (Z)-1-chloro-2 claim 11 ,3 claim 11 ,3-trifluoro-1-propene and (E)-1-chloro-2 claim 11 ,3 claim 11 ,3-trifluoro-1-propene claim 11 , andwherein, in the liquid-phase composition, a proportion of a content of (Z)-1-chloro-2,3,3-trifluoro-1-propene to a total amount of 1-chloro-2,3,3-trifluoro-1-propene is 80 to 100 mass %.14. The method of claim 11 , wherein a processing oil adhering to the article is cleaned off.15. The method of claim 14 , wherein the processing oil is at least one selected from a group consisting of a cutting oil claim 14 , a quenching ...
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