EP 1248807 A1 20021016 - CONTINUOUS PROCESS FOR MAKING POLYMERS IN CARBON DIOXIDE
Title (en)
CONTINUOUS PROCESS FOR MAKING POLYMERS IN CARBON DIOXIDE
Title (de)
KONTINUIERLICHES VERFAHREN ZUR HERSTELLUNG VON POLYMEREN IN KOHLENDIOXID
Title (fr)
PROCEDE CONTINU DE FABRICATION DE POLYMERES DANS DU DIOXYDE DE CARBONE
Publication
Application
Priority
- US 0030765 W 20001110
- US 16517799 P 19991112
Abstract (en)
[origin: WO0134667A1] A method for carrying out the continuous polymerization of a monomer in a carbon dioxide reaction medium comprises the steps of: (a) providing an apparatus including a continuous reaction vessel and a separator; (b) carrying out a polymerization reaction in the reaction vessel by combining a monomer and a carbon dioxide reaction medium therein (and preferably by also combining an initiator therein), wherein the reaction medium is a liquid or supercritical fluid, and wherein the reaction produces a solid polymer product in the reaction vessel; then (c) withdrawing a continuous effluent stream from the reaction vessel during the polymerization reaction, wherein the effluent stream is maintained as a liquid or supercritical fluid; then (d) passing the continuous effluent stream through the separator and separating the solid polymer therefrom while maintaining at least a portion of the effluent stream as a liquid or supercritical fluid; and then (e) returning at least a portion of the continuous effluent stream to the reaction vessel while maintaining the effluent stream as a liquid or supercritical fluid. The need for significant recompression of the continuous effluent stream prior to return to the reaction vessel is thereby minimized. Apparatus for carrying out such methods is also disclosed.
IPC 1-7
C08F 14/22; C08F 2/04; B01J 3/00; B01J 19/24; B01J 19/18; B01J 8/00
IPC 8 full level
B01D 50/00 (2006.01); B01J 3/00 (2006.01); B01J 3/02 (2006.01); B01J 3/04 (2006.01); B01J 19/18 (2006.01); C08F 2/01 (2006.01); C08F 2/04 (2006.01); C08F 4/32 (2006.01); C08F 14/22 (2006.01)
CPC (source: EP)
B01J 3/008 (2013.01); B01J 19/18 (2013.01); C08F 2/04 (2013.01); C08F 14/22 (2013.01); B01J 2219/00006 (2013.01); B01J 2219/00033 (2013.01); B01J 2219/00114 (2013.01); Y02P 20/54 (2015.11)
Citation (search report)
See references of WO 0134667A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0134667 A1 20010517; EP 1248807 A1 20021016; JP 2003514083 A 20030415; PL 356095 A1 20040614
DOCDB simple family (application)
US 0030765 W 20001110; EP 00978446 A 20001110; JP 2001537378 A 20001110; PL 35609500 A 20001110