EP 4055080 A1 20220914 - PROCESS FOR PREPARING POLYESTER CARBONATES
Title (en)
PROCESS FOR PREPARING POLYESTER CARBONATES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON POLYESTERCARBONATEN
Title (fr)
PROCÉDÉ DE PRÉPARATION DE CARBONATES DE POLYESTER
Publication
Application
Priority
- EP 19207650 A 20191107
- EP 2020080797 W 20201103
Abstract (en)
[origin: WO2021089534A1] The present invention relates to a process for preparing polyester carbonates by a melt transesterification process starting from polycarbonates or polycarbonate oligomers. The process especially relates to the preparation of polyester carbonates in a reactive extrusion process. The process is characterized in that the polyester carbonates prepared have a balanced property profile in terms of their molecular weight, glass transition temperature and residual amounts of phenolic OH. The invention further relates to the use of the polyester carbonates prepared according to the invention.
IPC 8 full level
C08G 63/64 (2006.01); C08G 63/78 (2006.01)
CPC (source: CN EP KR)
C08G 63/64 (2013.01 - CN EP KR); C08G 63/78 (2013.01 - CN EP); C08G 64/30 (2013.01 - KR); C08G 64/42 (2013.01 - KR); C08L 69/005 (2013.01 - KR)
Citation (search report)
See references of WO 2021089534A1
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 2021089534 A1 20210514; CN 114599706 A 20220607; EP 4055080 A1 20220914; KR 20220099965 A 20220714
DOCDB simple family (application)
EP 2020080797 W 20201103; CN 202080077318 A 20201103; EP 20797519 A 20201103; KR 20227014943 A 20201103