US 7,540,973 B2
	Azeotrope-like mixtures comprising heptafluorocyclopentane
Joan Ellen Bartelt, Wilmington, Del. (US)
Assigned to E. I. du Pont de Nemours and Company, Wilmington, Del. (US)
Filed on Dec. 07, 2007, as Appl. No. 11/952,469.
Claims priority of provisional application 60/874365, filed on Dec. 12, 2006.
Prior Publication US 2008/0139444 A1, Jun. 12, 2008
Int. Cl. C09K 5/04 (2006.01); C11D 7/50 (2006.01)

U.S. Cl. 252—67  [252/68; 252/69; 252/364; 510/177; 510/408; 510/415]

9 Claims

1. An azeotrope-like composition comprising from about from about 2% by weight to about 44% by weight 1,1,1,2,2,3,4,5,5,5-decafluoropentane, from about 2% by weight to about 50% by weight 1,1,2,2,3,3,4-heptafluorocyclopentane, and at least about 47% by weight trans-1,2-dichloroethylene.