Title:
CATALYST SYSTEMS FOR POLYCONDENSATION REACTIONS
Document Type and Number:
WIPO Patent Application WO2004014982
Kind Code:
A3
Abstract:
The invention concerns new catalyst systems for the synthesis of polyesters, for instance for the manufacture of polyethylene terephthalate and its copolyesters. The catalyst system according to the invention consists of an antimony or germanium compound, a heterogeneous catalyst component and an ester of phosphoric acid or of phosphorous acid as stabilizer. The polycondensation rate both in the liquid phase and in solid phase polycondensation (solid state) can be increased by 30-100 percent with the smallest additions of the heterogeneous component.
Inventors:
WIEGNER JENS-PETER (DE)
VOERCKEL VOLKMAR (DE)
RUNKEL DIETMAR (DE)
FEIX GUNTER (DE)
STAEUBER HANS (CH)
VOERCKEL VOLKMAR (DE)
RUNKEL DIETMAR (DE)
FEIX GUNTER (DE)
STAEUBER HANS (CH)
Application Number:
PCT/US2003/013132
Publication Date:
April 08, 2004
Filing Date:
April 28, 2003
Export Citation:
Assignee:
DOW GLOBAL TECHNOLOGIES INC (US)
WIEGNER JENS-PETER (DE)
VOERCKEL VOLKMAR (DE)
RUNKEL DIETMAR (DE)
FEIX GUNTER (DE)
STAEUBER HANS (CH)
WIEGNER JENS-PETER (DE)
VOERCKEL VOLKMAR (DE)
RUNKEL DIETMAR (DE)
FEIX GUNTER (DE)
STAEUBER HANS (CH)
International Classes:
C08G63/82; C08G63/85; C08K5/523; D01F6/62; (IPC1-7): C08G63/82
Domestic Patent References:
| WO2003004547A2 | 2003-01-16 | |||
| WO2001042335A1 | 2001-06-14 |
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