C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
C09B 69/10 (2006.01) C08G 63/685 (2006.01) C08J 3/09 (2006.01) C09B 67/10 (2006.01)
Patent
CA 2093210
Disclosed are powder colorant compositions in a finely-divided form and processes for the preparation therefor. The colorant compositions are comprised of a semicrystalline polyester, in finely-divided form, having copolymerized therein one or more colorant compounds at levels greater than about 1 weight percent. The process for preparing these compositions involves the dissolution of an amorphous polyester concentrate in a crystallization-inducing solvent (s), followed by crystallization. Such compositions are useful as pigments or colorants where nonextractability of the colorant is important.
Darnell William Ronald
Henry James William
Krutak James John
Oldfield Terry Ann
Parham William Whitfield
Eastman Chemical Company
Gowling Lafleur Henderson Llp
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