Back to results
US 6,319,970 B1Granted
Flash spinning process and flash spinning solution with azeotropes
AssigneeE. I. Du Pont de Nemours and Company
InventorsHyunkook Shin, Roger Keith Siemionko, Nanlin Deng
Life of this patent
Estimating the term…
Abstract
A spinning process using azeotropic compounds as spin agents having essentially zero ozone depletion potential and that are either non-flammable or of very low flammability.
Claims5
A spin fluid comprising (a) 5 to 30 wgt. % synthetic fiber-forming polyolefin and (b) a spin agent selected from the group consisting of a mixture of about 46 wgt. % decafluoropentane, about 40 wgt. % trans-1,2 dichloroethylene and 14 wgt. % cyclopentane;
- and a mixture of about 50 wgt. % perfluorobutyl methyl ether and about 50 wgt. % trans-1,2-dichloroethylene.
Dependencies are inferred from the claim text.