MANUFACTURE OF THERMOPLASTIC SYNTHETIC RESIN

Title:

MANUFACTURE OF THERMOPLASTIC SYNTHETIC RESIN

Document Type and Number:

Japanese Patent JP3124924

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To manufacture impact resistant thermoplastic in a single step as far as possible by supplying elastomer composition containing residual moisture up to specific wt.% to a biaxial extruder having double threaded screws rotating in the same direction so that the moisture from a dehydration part partly or entirely becomes a liquid state.
SOLUTION: The zones of a biaxial extruder are arranged as follows toward the axial direction of the extruder. The zones include the metering supply zone 2 of elastomer composition A containing the residual moisture up to 60wt.%, first compression zone 3, second compression zone 3', intermediate site feeding screw zone 0, zone 4 supplied with melted material of thermoplastic B, first plasticizing zone 5, second plasticizing zone 5', first deaerating zone 6, second deaerating zone 6' and discharge zone 7. The two screws of the extruder are formed as deeply engraved threads and double threads. The extruder is operated by the number of revolutions of the screw from 50 to 600min-1, and shearing speed of 20 to 240s-1.

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Inventors:

Norbert, Guntherberg
Jurgen, Hoffmann
Hilmar, Aurich
Elmal, Myran
Claus, Bus
Bernhard, Kuzauderna
Sufen, Grabowski

Application Number:

JP7288396A

Publication Date:

January 15, 2001

Filing Date:

March 27, 1996

Export Citation:

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Assignee:

BASF Akchen Gezel Shaft

International Classes:

B29B7/88; B29B7/48; B29B7/58; B29B13/06; B29C48/395; B29C48/76; C08G85/00; C08J3/20; C08J3/205; C08L25/04; C08L27/06; C08L33/04; C08L33/12; C08L33/18; C08L33/20; C08L51/00; C08L51/04; C08L55/02; C08L101/00; (IPC1-7): B29B7/48; B29B7/58; C08J3/20

Domestic Patent References:

JP48754A
JP742392B2

Attorney, Agent or Firm:

Yusuke Hiraki (2 outside)

Previous Patent: JPH03124923

Next Patent: METHOD FOR PRODUCING THERMOPLASTIC RESIN AND MOLDING MATERIAL OBTAINED BY THE METHOD