Method of producing fine particles of thermoplastic resin

Details Method of producing fine particles of thermoplastic resin Method of producing fine particles of thermoplastic resin

1987-10-14

1989-09-05

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Spheroidizing or rounding of solid particles

264 9, B22D 1101

Patent

active

048636460

ABSTRACT:
A method for producing fine particles of a thermoplastic resin by mixing the thermoplastic resin with a medium which does not dissolve the resin, at a temperature not lower than the softening point or melting point of the resin to prepare a hot dispersion, cooling the dispersion to a temperature lower than the softening point or melting point of the resin and separating the solidified particles of thermoplastic resin from the medium. The medium is a silicone oil with a viscosity of 100 cst/25.degree. C. or higher.

REFERENCES:
patent: 3505434 (1970-04-01), Battaerd
patent: 3586654 (1971-06-01), Lerman et al.
patent: 4076637 (1978-02-01), Hurst
patent: 4092381 (1978-05-01), Halpern et al.

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