Compositions – Liquid crystal compositions
Patent
1992-01-16
1994-10-11
Wu, Shean
Compositions
Liquid crystal compositions
2522995, 25229962, 23295R, 23300, C09K 1952, B01D 900
Patent
active
053544960
ABSTRACT:
The invention provides novel chemical complexation products for use as superconductors, polymer electrolytes for alkali metal batteries, electrolytes for electrochromic windows, static dissipative plastics, etc. It also provides for manufacturing such complexation products. The complexation products may comprise (a) lyotropic liquid crystal salts ordinarily insoluble in anhydrous, aprotic, ligand-type solvents, (b) non-polymeric ligand-type solvents containing the NCO group, (c) polymeric-type ligands containing repetitive, oxygen-bearing groups along a substantially linear chain, and (d) from 1% to 98% by weight of inorganic compounds of high surface area. The complexation and solubilization can be carried out so as to secure liquids or low viscosity pastes by heating and mixing the components in appropriate ratios. Or the components can be fluxed in a Banbury mixer or its equivalent at an elevated temperature using limited quantities of a non-polymeric, ligand-type solvent so that the final product is a solid. Vacuum processing can be used to degas these systems and insure superb wetting. Formed shapes of the products can be heated so as to remove additional non-polymeric, ligand-type solvents where desired. Depending on the inorganic compound of high surface area selected and its concentration in the final product, enhanced yield value, enhanced and stabilized superconductivity, improved abrasion resistance, and other desirable features may be secured. As an alternate mode of preparing liquid or paste compositions, the solid salt complexes can be complexed and fluidized by heating with liquid polymers such as polyethelene glycol and inorganic compounds of high surface area.
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