Electrostatographic toner composition

Details Electrostatographic toner composition Electrostatographic toner composition

G - Physics

03

G

96/51

G03G 9/08 (2006.01) G03G 9/087 (2006.01)

Patent

CA 1036409

ABSTRACT OF THE INVENTION Electrostatographic toner materials having exception- ally desirable mechanical and thermal properties may be pre- pared by forming a finely divided mixture comprising a coloring material and a polymeric material which is block or graft copolymer consisting of at least one crystalline or crystalliz- able polymeric segment chemically linked to at least one amor- phous polymeric segment, said crystalline or crystallizable segment individually having a glass transition temperature of less than about 20°C and a melting point of at least about 45°C, and said amorphous segment individually having a glass transi- tion temperature less than the melting point of said crystalline or crystallizable segment. Toner materials prepared according to the present invention exhibit thermal and mechanical prop- erties which render them extremely useful in xerographic pro- cesses, particularly high speed processes.

208944

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