Back to results
US 4,699,636 AGranted
Process for outgassing liquid-crystalline materials
AssigneeMerck Patent GmbH
InventorsKlaus Bofinger, Hans A. Kurmeier, Michael Romer, Jurgen Seubert
Life of this patent
Estimating the term…
Abstract
Liquid-crystalline materials can be outgassed by thermal treatment under reduced pressure in a thin-layer evaporator or with additional ultrasonic treatment.
Claims25
A process for outgassing a liquid-crystalline material comprised of a plurality of individual components and having inert gas dissolved therein;
- the process comprising the steps of distributing the material in a thin-layer on a moving surface while flowing the material on the surface and while elevating the temperature of the material to within the range of 10.degree. to 100.degree. C. and reducing pressure of the atmosphere interfacing the material to a range of 9.times.10.sup.4 to 1 Pa.
Dependencies are inferred from the claim text.