The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 2009
Filed:
Dec. 07, 2007
Joan Ellen Bartelt, Wilmington, DE (US);
Joan Ellen Bartelt, Wilmington, DE (US);
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Disclosed is an azeotrope-like composition comprising: from about 2% by weight to about 50% by weight of a hydrofluorocarbon selected from the group consisting of 1,1,1,2,2,3,4,5,5,5-decafluoropentane and 1,1,1,3,3-pentafluorobutane, from about 2% by weight to about 50% by weight 1,1,2,2,3,3,4-heptafluorocyclopentane, and an amount effective in dissolving oils and contaminants of trans-1,2-dichloroethylene. In another embodiment, are fluorocarbon solvent composition comprising from about 15 to about 99 weight percent 1,1,1,2,2,3,4,5,5,5-decafluoropentane and from about 85 to about 1 percent by weight 1,1,2,2,3,3,4-heptafluorocyclopentane wherein the freezing point of the composition is less than 0° C.