Methods of preparing encapsulated pigments
AssigneeDegussa AG
InventorsAkos Kiss, Peter Kleinschmit, Juergen Hanich, Guenter Halbritter, Jenny Horst
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Abstract
Encapsulation pigments comprising chromophoric particles embedded in glaze-stable casings are prepared by means of calcination from the appropriate initial products. High yields and strong color intensities are obtained if the chromophoric substance or its initial compounds are bound in and/or to a zeolite and are calcined in this form with the remaining constituents.
Claims5
A method of preparing encapsulated pigments comprising a chromophoric or color-bearing substance which is encapsulated in a transparent casing compound of a substance stable against chemical attacks and glass stream vitrification, said method comprising binding the chromophoric substance or its initial components in and/or to a zeolite, followed by mixing with the encapsulating substance or its initial components and subsequently calcining at 500.degree. C.
Dependencies are inferred from the claim text.