Title:
PROCESS FOR PREPARING SILOXANE-FILLER COMPOSITIONS USING AN EXTRUDER MIXER
Document Type and Number:
WIPO Patent Application WO2002044247
Kind Code:
A3
Abstract:
The invention describes a process for the production of a polysiloxane containing mass, incorporating surface treated filler material, by continuously feeding materials to a screw extruder (12) in which they are mixed and conveyed to an outlet (14) with removal of gaseous materials therefrom. The screw extruder (12) has at least two screws (22) located in communicating chambers distributed radially about a common axis (26) and extending with the axis of each screw parallel to the common axis (26). The materials being mixed in the extruder typically comprise: a) a polysiloxane, b) a reinforcing filler and c) a hydrophobing agent. Each material is fed into the extruder (12) as the material itself or in admixture with any one or more of the others of (a), (b) and (c).
Inventors:
ULZHEIMER RUDI (DE)
REUSS STEFAN (GB)
REUSS STEFAN (GB)
Application Number:
PCT/GB2001/005176
Publication Date:
October 03, 2002
Filing Date:
November 23, 2001
Export Citation:
Assignee:
DOW CORNING (US)
ULZHEIMER RUDI (DE)
REUSS STEFAN (GB)
ULZHEIMER RUDI (DE)
REUSS STEFAN (GB)
International Classes:
C08J3/20; B01F3/18; B01F7/08; B29B7/48; B29C48/43; C08K3/00; C08K5/54; C08L83/04; (IPC1-7): C08J3/22; C08L83/04; B29B7/48; B29B7/90
Foreign References:
| US5836682A | 1998-11-17 | |||
| EP0909777A2 | 1999-04-21 | |||
| EP0776751A1 | 1997-06-04 |
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