EP 1735367 A1 20061227 - METHOD FOR PRODUCTION OF A PARTLY-CRYSTALLINE POLYCONDENSATE
Title (en)
METHOD FOR PRODUCTION OF A PARTLY-CRYSTALLINE POLYCONDENSATE
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES TEILKRISTALLINEN POLYKONDENSATES
Title (fr)
PROCEDE DE PRODUCTION D'UN POLYCONDENSAT SEMI-CRISTALLIN
Publication
Application
Priority
- CH 2005000035 W 20050124
- DE 102004012579 A 20040312
Abstract (en)
[origin: WO2005087838A1] The invention relates to a method for production of a partly-crystalline polycondensate, in particular, a polyester or a polyamide, whereby a polycondensate prepolymer is firstly produced, which is prepared and formed into granules, by means of a die-face granulating device, with an average diameter of less than 2 mm, said granules being cut at the outlet from the die plate. The degree of crystallisation and the molecular weight are then increased in a solid-phase polycondensation process. For granulation, the polycondensate prepolymer melt is pressed through a die plate with a number of die perforations, preferably arranged on at least one annular track. The cutting is achieved by means of a circulating knife with a liquid jet.
IPC 8 full level
C08G 63/78 (2006.01); C08G 63/80 (2006.01); C08G 64/20 (2006.01); C08G 69/28 (2006.01); C08G 69/30 (2006.01)
CPC (source: EP KR US)
B29B 9/12 (2013.01 - EP); B29B 9/16 (2013.01 - EP); C08G 63/00 (2013.01 - KR); C08G 63/78 (2013.01 - KR); C08G 63/785 (2013.01 - EP US); C08G 63/80 (2013.01 - EP US); C08G 69/00 (2013.01 - KR); C08G 69/04 (2013.01 - EP US); C08G 69/06 (2013.01 - EP US); C08G 69/28 (2013.01 - EP KR US); C08G 69/30 (2013.01 - EP US); B29B 9/06 (2013.01 - EP); B29B 2009/165 (2013.01 - EP); B29B 2009/168 (2013.01 - EP)
Citation (search report)
See references of WO 2005087838A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005087838 A1 20050922; BR PI0508679 A 20070821; CN 1930209 A 20070314; DE 102004012579 A1 20050929; EA 009454 B1 20071228; EA 200601680 A1 20070227; EP 1735367 A1 20061227; JP 2007528920 A 20071018; KR 20070012383 A 20070125; US 2007135613 A1 20070614; ZA 200606797 B 20070425
DOCDB simple family (application)
CH 2005000035 W 20050124; BR PI0508679 A 20050124; CN 200580007951 A 20050124; DE 102004012579 A 20040312; EA 200601680 A 20050124; EP 05700330 A 20050124; JP 2007502164 A 20050124; KR 20067019837 A 20060925; US 59055405 A 20050124; ZA 200606797 A 20060816