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AR132876A1 - PROCESS FOR THE HYDROLYTIC DEPOLYMERIZATION OF A POLYAMIDE - Google Patents

PROCESS FOR THE HYDROLYTIC DEPOLYMERIZATION OF A POLYAMIDE

Info

Publication number
AR132876A1
AR132876A1 ARP240101437A ARP240101437A AR132876A1 AR 132876 A1 AR132876 A1 AR 132876A1 AR P240101437 A ARP240101437 A AR P240101437A AR P240101437 A ARP240101437 A AR P240101437A AR 132876 A1 AR132876 A1 AR 132876A1
Authority
AR
Argentina
Prior art keywords
stream
polyamide
depolymerization
liquid
pressure
Prior art date
Application number
ARP240101437A
Other languages
Spanish (es)
Inventor
Stefan Blei
Faissal El-Toufaili
- Bey Oliver Ali
Vikram Raghavendhar Ravikumar
Straeten Bart Vander
Michael Schreiber
Bao Liu
Christian Dienes
Original Assignee
Basf Se
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Basf Se filed Critical Basf Se
Publication of AR132876A1 publication Critical patent/AR132876A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
    • C07D201/02—Preparation of lactams
    • C07D201/12—Preparation of lactams by depolymerising polyamides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • C08J11/14—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with steam or water
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Polyamides (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

Un proceso para la despolimerización hidrolítica de una poliamida 6 comprendida en un material sólido M, donde el proceso comprende proporcionar el material sólido M; fundir en una unidad de fusión UM el material sólido M, para obtener una corriente líquida SM que tiene una temperatura TSM a una presión pSM; proporcionar una corriente acuosa líquida SW que tiene una temperatura TSW a una presión pSW; mezclar en una unidad de prerreacción UPR la corriente SM con la corriente SW, para obtener una corriente líquida de alimentación de reacción SF que tiene una temperatura TSF a una presión pSF; alimentar la corriente SF a una unidad de reacción química UR; someter la corriente SF en la unidad de reacción UR a condiciones de despolimerización de poliamida 6 que comprenden una temperatura de despolimerización de poliamida 6 TD a una presión de despolimerización de poliamida 6 pD, para obtener en UR una mezcla de despolimerización acuosa que comprende e-caprolactama disuelta en agua; eliminar una corriente de salida de reactor líquido acuoso SR de UR, donde la corriente SR comprende e-caprolactama disuelta en agua; en donde 0,8 &A process for the hydrolytic depolymerization of a polyamide 6 comprised in a solid material M, the process comprising providing the solid material M; melting the solid material M in a melting unit UM to obtain a liquid stream SM having a temperature TSM at a pressure pSM; providing a liquid aqueous stream SW having a temperature TSW at a pressure pSW; mixing the SM stream with the SW stream in a prereaction unit UPR to obtain a liquid reaction feed stream SF having a temperature TSF at a pressure pSF; feeding the SF stream to a chemical reaction unit UR; subjecting the SF stream in the reaction unit UR to polyamide 6 depolymerization conditions comprising a polyamide 6 depolymerization temperature TD at a polyamide 6 depolymerization pressure pD to obtain in UR an aqueous depolymerization mixture comprising e-caprolactam dissolved in water; removing an aqueous liquid SR reactor outlet stream from UR, where the SR stream comprises e-caprolactam dissolved in water; wherein 0.8 &

ARP240101437A 2023-06-06 2024-06-05 PROCESS FOR THE HYDROLYTIC DEPOLYMERIZATION OF A POLYAMIDE AR132876A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2023098586 2023-06-06
CN2023133637 2023-11-23

Publications (1)

Publication Number Publication Date
AR132876A1 true AR132876A1 (en) 2025-08-06

Family

ID=91465296

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP240101437A AR132876A1 (en) 2023-06-06 2024-06-05 PROCESS FOR THE HYDROLYTIC DEPOLYMERIZATION OF A POLYAMIDE

Country Status (5)

Country Link
AR (1) AR132876A1 (en)
AU (1) AU2024286546A1 (en)
MX (1) MX2025014674A (en)
TW (1) TW202506641A (en)
WO (1) WO2024251758A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5495015A (en) * 1994-12-12 1996-02-27 Basf Aktiengesellschaft Process for producing caprolactam through hydrolytic cleavage of molten polycaprolactam
US5656757A (en) * 1995-08-10 1997-08-12 Alliedsignal Inc. Monomer recovery from multi-component materials
US5990306A (en) * 1997-09-03 1999-11-23 Alliedsignal Inc. Process for the purification of caprolactam obtained from the depolymerization of polyamide-containing carpet
CN101679626B (en) 2007-06-20 2011-12-21 巴斯夫欧洲公司 Method for the production of polyamides in extruders
EP2641939A1 (en) 2012-03-21 2013-09-25 Basf Se Brightly coloured flame-retardant polyamides
US20250257037A1 (en) * 2021-10-29 2025-08-14 Toray Industries, Inc. METHOD OF COLLECTING e-CAPROLACTAM AND POLYAMIDE 6 OLIGOMER, AND METHOD OF PRODUCING POLYAMIDE 6

Also Published As

Publication number Publication date
AU2024286546A1 (en) 2025-12-18
TW202506641A (en) 2025-02-16
WO2024251758A1 (en) 2024-12-12
MX2025014674A (en) 2026-01-07

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