EP 4263687 A1 20231025 - SELECTIVE DEPOLYMERISATION OF POLYAMIDE 6 TO PRODUCE CAPROLACTAM FROM MIXTURES OF CAPROLACTAM-CONTAINING POLYMERS AND POLYURETHANE-CONTAINING POLYMERS, IN PARTICULAR POLYURETHANE BLOCK COPOLYMERS
Title (en)
SELECTIVE DEPOLYMERISATION OF POLYAMIDE 6 TO PRODUCE CAPROLACTAM FROM MIXTURES OF CAPROLACTAM-CONTAINING POLYMERS AND POLYURETHANE-CONTAINING POLYMERS, IN PARTICULAR POLYURETHANE BLOCK COPOLYMERS
Title (de)
SELEKTIVE DEPOLYMERISATION VON POLYAMID 6 ZU CAPROLACTAM AUS GEMISCHEN VON CAPROLACTAMHALTIGEN POLYMEREN UND POLYURETHANHALTIGEN POLYMEREN, INSBESONDERE POLYURETHANBLOCKCOPOLYMEREN
Title (fr)
DÉPOLYMÉRISATION SÉLECTIVE DE POLYAMIDE 6 EN CAPROLACTAME À PARTIR DE MÉLANGES DE POLYMÈRES CONTENANT DU CAPROLACTAME ET DE POLYMÈRES CONTENANT DU POLYURÉTHANE, EN PARTICULIER DE COPOLYMÈRES SÉQUENCÉS DE POLYURÉTHANE
Publication
Application
Priority
- EP 20215074 A 20201217
- EP 2021085651 W 20211214
Abstract (en)
[origin: WO2022129022A1] Method for obtaining caprolactam from mixtures of caprolactam-containing polymers and polyurethane-containing polymers, in particular polyurethane block copolymers, by depolymerisation, characterised in that the depolymerisation of the mixture is carried out in the presence of 0.05 to 5 wt.% of a base, at a temperature of 250 to 350°C, at a pressure of 5 to 700 mbar, with the caprolactam being obtained in gas form.
IPC 8 full level
C08J 11/16 (2006.01); C08L 75/04 (2006.01); C08L 77/02 (2006.01)
CPC (source: EP IL KR US)
C07D 223/10 (2013.01 - KR US); C08J 11/16 (2013.01 - EP IL KR US); C08J 2375/04 (2013.01 - KR US); C08J 2377/02 (2013.01 - EP IL KR US); C08J 2475/04 (2013.01 - EP IL); Y02W 30/62 (2015.05 - EP IL KR US)
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022129022 A1 20220623; CN 116261581 A 20230613; EP 4263687 A1 20231025; IL 303644 A 20230801; JP 2024501219 A 20240111; KR 20230121751 A 20230821; US 2024117142 A1 20240411
DOCDB simple family (application)
EP 2021085651 W 20211214; CN 202180065909 A 20211214; EP 21836523 A 20211214; IL 30364423 A 20230612; JP 2023537192 A 20211214; KR 20237020238 A 20211214; US 202118265702 A 20211214