Processes for the preparation of toner compositions

Details Processes for the preparation of toner compositions Processes for the preparation of toner compositions

1989-05-30

1993-05-25

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

To form particulate product

264141, 264211, 26421119, 264349, B29B 916, B29C 4700

Patent

active

052137406

ABSTRACT:
A process for the preparation of particles which includes adding to a melt mixing apparatus at least two polymers, at least one of which is insoluble, incompatible or immiscible in the other polymer or polymers, and separating the incompatible polymer from the melt mixture. Also, a process for the preparation of toner particles which includes adding to a melt mixing apparatus, or to an extrusion apparatus at least two polymers, one of which is insoluble in the other polymer, and pigment particles, melt mixing or melt extruding the aforementioned polymers and pigments, and separating the incompatible polymer domains from the resulting mixture.

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patent: 3467634 (1969-09-01), Jacknow et al.
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patent: 3640861 (1972-02-01), Hsia
patent: 4222982 (1980-09-01), Beatty et al.
patent: 4233388 (1980-11-01), Bergen et al.
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patent: 4298672 (1981-11-01), Lu
patent: 4338390 (1982-07-01), Lu
patent: 4379825 (1983-04-01), Mitushashi
patent: 4560635 (1985-12-01), Hoffend et al.
patent: 4842797 (1989-06-01), Matsumura et al.
English-language translation of Japanese reference 59-230,630.

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