Stabilized methylchloroform
AssigneeThe Dow Chemical Company
InventorsNobuyuki Ishibe, Warren F. Richey
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Abstract
A stabilized methylchloroform for use in vapor degreasing which is stable in the presence of metals which contains pyrazine, dimethoxypropane, an acetylenic alcohol and a nitroalkane or a methylfuran. Such combination prevents corrosion of aluminum, iron, copper and zinc and the decomposition of the solvent.
Claims10
A stabilized methylchloroform composition comprising a stabilizing amount of (1) pyrazine, (2) 2,2-dimethoxypropane, and (3) a nitroalkane or a furan or an alkylfuran in methylchloroform.
A method of protecting aluminum, copper, and brass from corrosion in the presence of methylchloroform which comprises adding to said methylchloroform a stabilizing amount of (1) pyrazine, (2) 2,2-dimethoxypropane and (3) a nitroalkane or methylfuran.
A method of protecting aluminum, copper, iron and zinc from corrosion in the presence of methylchloroform which comprises adding to said methylchloroform a stabilizing amount of (1) pyrazine, (2) 2,2-dimethoxypropane, (3) a nitroalkane or methylfuran and an acetylenic alcohol.
Dependencies are inferred from the claim text.