Compositions: coating or plastic – Coating or plastic compositions – Carbohydrate or derivative containing
Patent
1984-11-21
1985-12-31
Clingman, A. Lionel
Compositions: coating or plastic
Coating or plastic compositions
Carbohydrate or derivative containing
106196, 106308Q, 106308N, 106308C, 428204, C08L 108
Patent
active
045618992
ABSTRACT:
Yellow crystal stable pigment of mono-azo type having an average particle size of 0.02 to 0.8 .mu.m, the pigment having on its surface a crystal growth inhibitor compound having substantially similar chemical structure as the pigment, being more soluble than the pigment in solvents used to disperse the pigment, the inhibitor compound not fitting within the crystal lattice of the pigment. The crystal growth of pigment dispersions due to Ostwald ripening can be prevented by adding a crystal growth inhibitor as noted above to the pigment dispersion. The pigments can be dispersed in an organic polymeric binder, e.g., cellulose acetate, to form yellow toners which are useful in toning photosensitive color proofing systems.
REFERENCES:
patent: 3778282 (1973-12-01), Manier
patent: 4083686 (1978-04-01), Dimroth et al.
patent: 4270917 (1981-06-01), Heald et al.
Clingman A. Lionel
E. I. Du Pont de Nemours and Company
Yarbrough Amelia B.
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