Ferro Corporation
Method for manufacturing bismuth based pigment having an improved alkaline resistance by encapsulating said pigment with a chelating agent
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Abstract:
The present invention is directed to a method for manufacturing a bismuth based pigment having an improved alkaline resistance, the method comprising: i) obtaining a dried bismuth based pigment; ii) encapsulation of the bismuth based pigment using a chelating agent; iii) final processing of the encapsulated pigment; and v) drying of the pigment. In addition, the present invention is directed to a bismuth based pigment encapsulated by a layer of chelating agent.
Status:
Grant
Type:
Utility
Filling date:
22 Sep 2017
Issue date:
24 Aug 2021