C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
C09B 67/08 (2006.01) C09B 67/20 (2006.01)
Patent
CA 2076141
P-18756/A/MA 2040 Abstract of Disclosure Process for Improving Storage Stability of Pigments A process for improving the storage stability of a coloured organic pigment in powder form which comprises coating pigment particles with a partially or completely hydrolysed compound of an element of Group IVA or Group IVB of the Periodic Table in its IV oxidation state, thereby inhibiting reduction of the tinting strength of the pigment on storage.
Bugnon Philippe
Fraser Iain Frank
Igbal Abul
Tsai Wern Tung
Ag Ciba-Geigy
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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