Method for producing a homogeneous polycarbonate composition

Details Method for producing a homogeneous polycarbonate composition Method for producing a homogeneous polycarbonate composition

1996-08-21

1999-10-26

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Miscellaneous

523351, 525462, B29B 730

Patent

active

059722738

ABSTRACT:
Disclosed is a method for producing a homogeneous polycarbonate composition, which comprises feeding a first polycarbonate in a molten state to a first inlet of an extruder, while feeding a mixture of an second polycarbonate and at least one thermal stabilizer to a second inlet of the extruder, wherein the second inlet is disposed downstream of the first inlet, and extruding the first polycarbonate and the mixture through the extruder. By the method of the present invention, additives can be uniformly dispersed in a molten polycarbonate without dissolving the additives in a solvent, and a polycarbonate composition of the polycarbonate and the additive, which has various excellent properties, such as excellent thermal stability, can be produced efficiently.

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