Polyurea-covered particle having narrow particle size distributi

Details Polyurea-covered particle having narrow particle size distributi Polyurea-covered particle having narrow particle size distributi

1994-01-10

1996-02-27

Seidleck, James J.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

430111, 430137, 430138, 428356, 428402, 42840221, 42840222, 524589, 524700, 524716, 528 62, 42721334, G03G 9093

Patent

active

054947693

ABSTRACT:
The present invention provides a polyurea-covered particle having a narrow particle size distribution, which comprises a vinyl polymer particle as a seed particle and a polyurea cover layer formed on the vinyl polymer particle. The present invention also provides a process for producing the polyurea-covered particle having a narrow particle size distribution, which comprises:

REFERENCES:
patent: 4428983 (1984-01-01), Nehen et al.
patent: 4758506 (1988-07-01), Lok et al.
patent: 5008325 (1991-04-01), Soto et al.
patent: 5139915 (1992-08-01), Moffat et al.

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