WO2024257006A4 - Procédé de récupération de polyamides - Google Patents

Procédé de récupération de polyamides Download PDF

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Publication number
WO2024257006A4
WO2024257006A4 PCT/IB2024/055790 IB2024055790W WO2024257006A4 WO 2024257006 A4 WO2024257006 A4 WO 2024257006A4 IB 2024055790 W IB2024055790 W IB 2024055790W WO 2024257006 A4 WO2024257006 A4 WO 2024257006A4
Authority
WO
WIPO (PCT)
Prior art keywords
mixture
polyamides
phase
salt
process according
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/IB2024/055790
Other languages
English (en)
Other versions
WO2024257006A1 (fr
Inventor
Massimo Broccatelli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Primpex Plastiche Riunite Italiane Import Export SPA
Original Assignee
Primpex Plastiche Riunite Italiane Import Export SPA
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 Primpex Plastiche Riunite Italiane Import Export SPA filed Critical Primpex Plastiche Riunite Italiane Import Export SPA
Priority to EP24740979.0A priority Critical patent/EP4728001A1/fr
Publication of WO2024257006A1 publication Critical patent/WO2024257006A1/fr
Publication of WO2024257006A4 publication Critical patent/WO2024257006A4/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
    • C08J11/08—Recovery or working-up of waste materials of polymers without chemical reactions using selective solvents for polymer components
    • 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
    • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers

Landscapes

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

Abstract

L'invention concerne un procédé de récupération de polyamides (1) à partir d'un matériau (10) comprenant des polyamides (1) et des polluants (2), ledit procédé comprenant : une phase de préparation d'une première solution (3) étant un solvant eutectique profond et comprenant au moins du méthanol (4) et au moins un sel (5) ; une phase de solubilisation dans laquelle le matériau (10) est ajouté à la première solution (3) pour obtenir un premier mélange (11) dans lequel les polyamides (1) se lient au sel (5) ; une première phase de filtration dans laquelle des polluants (2) sont séparés du premier mélange (11) pour obtenir un second mélange (12) comprenant des polyamides (1) liés au sel (5) et au méthanol (4) ; une phase de séparation dans laquelle un agent de séparation (6) est ajouté au deuxième mélange (12) pour soustraire le sel (5) à la fois du méthanol (4) et des polyamides (1) et obtenir un troisième mélange (13) dans lequel le sel (5) et les polyamides (1) sont à nouveau séparés ; une deuxième phase de filtration dans laquelle le troisième mélange (13) est soumis à une filtration de façon à obtenir les polyamides (1) et une deuxième solution (7).
PCT/IB2024/055790 2023-06-13 2024-06-13 Procédé de récupération de polyamides Ceased WO2024257006A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP24740979.0A EP4728001A1 (fr) 2023-06-13 2024-06-13 Procédé de récupération de polyamides

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102023000012114 2023-06-13
IT102023000012114A IT202300012114A1 (it) 2023-06-13 2023-06-13 Procedimento di recupero di poliammidi

Publications (2)

Publication Number Publication Date
WO2024257006A1 WO2024257006A1 (fr) 2024-12-19
WO2024257006A4 true WO2024257006A4 (fr) 2025-02-27

Family

ID=88097728

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2024/055790 Ceased WO2024257006A1 (fr) 2023-06-13 2024-06-13 Procédé de récupération de polyamides

Country Status (3)

Country Link
EP (1) EP4728001A1 (fr)
IT (1) IT202300012114A1 (fr)
WO (1) WO2024257006A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2359877A (en) * 1940-10-24 1944-10-10 Du Pont Polymeric compositions
JP5110704B2 (ja) * 2008-05-28 2012-12-26 学校法人 関西大学 脂肪族ポリアミド繊維基布複合体からの脂肪族ポリアミドの再生方法
CN114800943B (zh) * 2022-05-20 2024-02-20 嘉兴学院 一种废旧地毯的回收方法

Also Published As

Publication number Publication date
IT202300012114A1 (it) 2024-12-13
EP4728001A1 (fr) 2026-04-22
WO2024257006A1 (fr) 2024-12-19

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