C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/1, 402/325,
C08G 83/00 (2006.01) C08F 2/44 (2006.01) C09B 69/10 (2006.01) G01N 31/22 (2006.01)
Patent
CA 1124932
ABSTRACT OF THE DISCLOSURE The preparation of dye - containing compositions, in which the dye is copolymerized with an acrylic bared monomer, is disclosed. A hydrophilic copolymer is formed in which the dye is prevent in a nondiffusible form. The dye - acrylic polymer composition can be produced in the form of microbeads by emulsion polymerization In addition, light scattering particles may be added in the form of a material such as poly- styrene microrpheres.
316439
Gowling Lafleur Henderson Llp
The United States Of America Represented By The Secretary
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