JPS5499173A - Regeneration of polyamide - Google Patents

Regeneration of polyamide

Info

Publication number
JPS5499173A
JPS5499173A JP518478A JP518478A JPS5499173A JP S5499173 A JPS5499173 A JP S5499173A JP 518478 A JP518478 A JP 518478A JP 518478 A JP518478 A JP 518478A JP S5499173 A JPS5499173 A JP S5499173A
Authority
JP
Japan
Prior art keywords
polyamide
wastes
substances
ethylene glycol
solution
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.)
Pending
Application number
JP518478A
Other languages
Japanese (ja)
Inventor
Shigeo Ikeno
Ryozo Kondo
Akio Ikeyama
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP518478A priority Critical patent/JPS5499173A/en
Publication of JPS5499173A publication Critical patent/JPS5499173A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock
    • Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics
    • 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

  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

PURPOSE: To regenerate only polyamide selectively from wastes containing the polyamide, by dissolving the wastes in hydrous ethylene glycol to remove undissolved substances, and by cooling the solution.
CONSTITUTION: Wastes comprising polyamide or its mixture with other substances are dissolved in ethylene glycol containing 0.1W10 wt.% of water at 120°C or above, preferably 190°C or below, and the undissolved substances are removed by filtration and centrifugation. The solution is then cooled to deposit the polyamide, which is recovered. Polymer wastes discharged from textile manufacturing factories, fibrous wastes, woven fabrics, tire cords, carpet, and films may be used as the wastes. When the dissolving temperature is lower than 120°C, the polyamide cannot be dissolved well to worsen the operating efficiency. Too high temperature is undesirable due to trouble to equipment.
COPYRIGHT: (C)1979,JPO&Japio
JP518478A 1978-01-23 1978-01-23 Regeneration of polyamide Pending JPS5499173A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP518478A JPS5499173A (en) 1978-01-23 1978-01-23 Regeneration of polyamide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP518478A JPS5499173A (en) 1978-01-23 1978-01-23 Regeneration of polyamide

Publications (1)

Publication Number Publication Date
JPS5499173A true JPS5499173A (en) 1979-08-04

Family

ID=11604137

Family Applications (1)

Application Number Title Priority Date Filing Date
JP518478A Pending JPS5499173A (en) 1978-01-23 1978-01-23 Regeneration of polyamide

Country Status (1)

Country Link
JP (1) JPS5499173A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5430068A (en) * 1993-11-24 1995-07-04 E. I. Du Pont De Nemours And Company Recovery of polyamide using a solution process
WO1996023025A1 (en) * 1993-11-24 1996-08-01 E.I. Du Pont De Nemours And Company Recovery of polyamide using a solution process
US6036726A (en) * 1995-10-27 2000-03-14 Solutia Inc. Process for separating polyamide from colorant
US6083283A (en) * 1996-10-24 2000-07-04 Solutia Inc. Method for removing color from ionically dyeable polymeric materials
KR20010066195A (en) * 1999-12-31 2001-07-11 이계안 A reusual method of resin for waste-radiator end tank
JP2008509255A (en) * 2004-08-05 2008-03-27 インターフェイス，インコーポレイテッド Nylon extraction method from waste materials
JP4658447B2 (en) * 2000-11-01 2011-03-23 インターフェイス，インコーポレイテッド How to extract nylon from waste materials
WO2016068734A1 (en) * 2014-10-29 2016-05-06 Laboratorium Czystych Technologii Acren Sp. Z O.O. Method for recovery of rubber and wire from waste automobile tires
JP2018172618A (en) * 2017-04-02 2018-11-08 ドナウ商事株式会社 Method for recycling polyamide composition
JP2018534184A (en) * 2015-11-09 2018-11-22 イオニカ・テクノロジーズ・ベー・フェー PA / PET separation method

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5430068A (en) * 1993-11-24 1995-07-04 E. I. Du Pont De Nemours And Company Recovery of polyamide using a solution process
WO1996023025A1 (en) * 1993-11-24 1996-08-01 E.I. Du Pont De Nemours And Company Recovery of polyamide using a solution process
AU717750B2 (en) * 1995-01-25 2000-03-30 Invista Technologies S.A.R.L. Recovery of polyamide using a solution process
US6036726A (en) * 1995-10-27 2000-03-14 Solutia Inc. Process for separating polyamide from colorant
US6083283A (en) * 1996-10-24 2000-07-04 Solutia Inc. Method for removing color from ionically dyeable polymeric materials
KR20010066195A (en) * 1999-12-31 2001-07-11 이계안 A reusual method of resin for waste-radiator end tank
JP4658447B2 (en) * 2000-11-01 2011-03-23 インターフェイス，インコーポレイテッド How to extract nylon from waste materials
JP2008509255A (en) * 2004-08-05 2008-03-27 インターフェイス，インコーポレイテッド Nylon extraction method from waste materials
JP2012140746A (en) * 2004-08-05 2012-07-26 Interface Inc Method for increasing tenacity of nylon fiber and method for increasing molecular weight of feedstock nylon
WO2016068734A1 (en) * 2014-10-29 2016-05-06 Laboratorium Czystych Technologii Acren Sp. Z O.O. Method for recovery of rubber and wire from waste automobile tires
JP2018534184A (en) * 2015-11-09 2018-11-22 イオニカ・テクノロジーズ・ベー・フェー PA / PET separation method
JP2018172618A (en) * 2017-04-02 2018-11-08 ドナウ商事株式会社 Method for recycling polyamide composition

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