JPS5499173A - Regeneration of polyamide - Google Patents
Regeneration of polyamideInfo
- 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
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
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)
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 |
-
1978
- 1978-01-23 JP JP518478A patent/JPS5499173A/en active Pending
Cited By (12)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS55139427A (en) | Production of finely powdered silk fibroin | |
JPS5499173A (en) | Regeneration of polyamide | |
JPS56159314A (en) | Preparation of polyimide fiber | |
JPH11310660A (en) | Recycling of product based on vinyl chloride polymer | |
JP2011088943A (en) | Recycling method for nylon 6 product | |
JPH036170B2 (en) | ||
JPS5691013A (en) | Undrawn polyester yarn and its production | |
JPS5914013B2 (en) | Purification method of prominated diphenyl ether | |
JP2023041597A (en) | Method for recovering polyester fabric | |
US3054764A (en) | Applicating solutions of poly-n-vinyl-5-methyl-2-oxazolidinone in aqueous glycol ether solvents | |
JPS5566925A (en) | Preparation of aromatic polyester polycarbonate | |
JPS5566935A (en) | Production of porous vinylidene fluoride resin membrane | |
JPS5534109A (en) | Polyethylene glycol composition | |
US2589750A (en) | Revivifying spent activated carbon by a process employing a double sodium bicarbonate wash | |
JPS5699232A (en) | Preparation of halogen-containing resin particle of high apparent density | |
CN215327039U (en) | Recycling device for dissolved acetylene in wet-method acetylene production wastewater | |
JPS6210108A (en) | Purification of electroconductive polymer | |
Morishima et al. | Flourescence quenching in aqueous solution of Amphiphilic copolymers: a kinetic model for downward curvature in a stern—volmer-type plot | |
KR860000973B1 (en) | Method of recoverring for solvents and polymer from the mixture of aromatic polyamide and solvents | |
US2503200A (en) | Separation of gamma-valerolactone from water | |
US3449485A (en) | Method of drawing polyacrylonitrile containing fibres | |
JP3724200B2 (en) | Recycling method of waste polystyrene resin | |
JPS5842605A (en) | Separation of organic solvent from waste solvent containing low-molecular weight polyolefin | |
JPS5753525A (en) | Preparation of halogen-containing polycarbonate resin | |
JPS5767552A (en) | Production of chlorobenzensulfonyl chloride |