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US 6,787,993 B2Granted
Ink including low molecular weight PVDF/HFP resin
AssigneeDurel Corporation
InventorsRobert L. Bush, P. Kevin Sysak
Life of this patent
Estimating the term…
Abstract
EL panels are made with PVDF/HFP copolymer resin binder, in substantially an uncrosslinked form, with DMAC solvent and/or other higher boiling point solvents/latent solvents/extenders. The resin binder is characterized by a melt viscosity of 1.0-8.5 kP using an industry standard test (ASTM D3835).
Claims3
A method for preparing an ink for the manufacture of an EL lamp, said method comprising the steps of:
- providing a solvent selected from the group consisting of DMAC, DMF, THF, DMSO, NMP, acetone, and mixtures thereof;
- dissolving a binder consisting essentially of low molecular weight PVDF/HFP copolymer resin in the solvent to form a solution of 5-55% by weight binder;
- and
- adding to the solution a filler selected from the group consisting of Zn:S particles doped to produce electroluminescence, BaTiO3 particles, TiO2 particles, SrTiO3 particles, CaTiO3 particles, carbon particles, and silver particles, to form a slurry.
1 more element
Dependencies are inferred from the claim text.