EP 2991756 A1 20160309 - REDUCING FOAMING IN AGITATED AUTOCLAVE DURING POLYMERIZATION PROCESS
Title (en)
REDUCING FOAMING IN AGITATED AUTOCLAVE DURING POLYMERIZATION PROCESS
Title (de)
REDUZIERUNG VON SCHAUMBILDUNG BEI EINEM GESCHÜTTELTEN AUTOKLAV WÄHREND EINES POLYMERISATIONSVERFAHRENS
Title (fr)
RÉDUCTION DE LA FORMATION DE MOUSSE DANS UN AUTOCLAVE SOUS AGITATION PENDANT LE PROCÉDÉ DE POLYMÉRISATION
Publication
Application
Priority
- US 201361818274 P 20130501
- US 2014034163 W 20140415
Abstract (en)
[origin: WO2014179049A1] Apparatuses and methods for preparing polyamide polymer with reduced foaming comprise steps of introducing a polymerizable composition including a polyamide salt into an agitated autoclave for polymerization, and increasing pressure within the agitated autoclave during a first cycle until a relative high pressure is achieved while agitating the polymerizable composition with an agitator. Additional steps include maintaining the pressure at the relative high pressure during a second cycle at least in part by venting the agitated autoclave, and stopping or significantly slowing movement of the agitator during at least a portion of the second cycle until a foam level within the agitated autoclave is reduced.
IPC 8 full level
B01J 3/04 (2006.01); B01J 19/18 (2006.01); C08G 69/28 (2006.01)
CPC (source: EP)
B01F 27/921 (2022.01); B01F 33/71 (2022.01); B01F 35/4111 (2022.01); B01F 35/92 (2022.01); B01F 35/93 (2022.01); B01J 19/0006 (2013.01); B01J 19/0013 (2013.01); B01J 19/18 (2013.01); C08G 69/28 (2013.01); B01F 2035/99 (2022.01); B01F 2215/0468 (2013.01); B01F 2215/0481 (2013.01); B01J 2219/00054 (2013.01); B01J 2219/00065 (2013.01); B01J 2219/00078 (2013.01); B01J 2219/00081 (2013.01); B01J 2219/00085 (2013.01); B01J 2219/0009 (2013.01); B01J 2219/00189 (2013.01)
Citation (search report)
See references of WO 2014179049A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2014179049 A1 20141106; CN 104130398 A 20141105; CN 104130398 B 20180828; EP 2991756 A1 20160309; TW 201505705 A 20150216
DOCDB simple family (application)
US 2014034163 W 20140415; CN 201410143066 A 20140410; EP 14723296 A 20140415; TW 103113272 A 20140410