Fluorocarbon dye dispersion for exhaust disperse dyeing
AssigneeE. I. Du Pont de Nemours and Company
InventorHarold Leonard Jackson
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Abstract
Fluorocarbon dye dispersion comprising an organic disperse dye; a certain normally liquid fluorocarbon having a fluorine to carbon atom ratio of at least 1.5, a solubility parameter of not greater than 7.0 and a critical temperature of at least 135.degree. C., and, optionally, an effective amount of a compound having both surface activity and solubility in the normally liquid fluorocarbon, said dye dispersion being useful in the exhaust dyeing of disperse dyeable synthetic polymers, in the form of films, fibers or fabrics, by the process comprising contacting the polymer with the dye disperson at a temperature above the glass transition temperature of the polymer for a sufficient time to exhaust the dye onto the polymer.
Claims13
Dye dispersion comprising:
- a. an organic disperse dye;
- and
- b. a normally liquid fluorocarbon having a fluorine to carbon atom ratio of at least 1.5, a solubility parameter of not greater than 7.0, a boiling point of at least 20.degree.-25.degree. C at atmospheric pressure, a critical temperature of at least 135.degree. C. and being selected from the group consisting of
- 1. perfluoro(2,3-dimethylbutane), perfluorokerosene and its constituents boiling above 100.degree. C or (CF.sub.3).sub.2 CF(CF.sub.2 CF.sub.2).sub.2-4 CF(CF.sub.3).sub.2,
- 2. perfluorocycloaliphatic hydrocarbons,
- 3. chlorofluoroalkanes,
- 4. hydrofluoroalkanes,
- 5. hydrochlorofluoroalkanes,
- 6. perfluoroalkyl ethers,
- 7. hexafluoropropylene oxide polymers having a degree of polymerization of 1-50,
- 8. perfluoro(tri-C.sub.1-12 alkylamines) and
- 9. unsaturated fluorocarbons having 3-4 perfluoroalkyl groups of 1-10 carbon atoms attached to the ##STR18## moiety, each of said groups (1)-(6)having no more than 18 carbon atoms.
Dependencies are inferred from the claim text.