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CA2261303A1 - Method for removing color from ionically dyeable polymeric materials - Google Patents

Method for removing color from ionically dyeable polymeric materials Download PDF

Info

Publication number
CA2261303A1
CA2261303A1 CA002261303A CA2261303A CA2261303A1 CA 2261303 A1 CA2261303 A1 CA 2261303A1 CA 002261303 A CA002261303 A CA 002261303A CA 2261303 A CA2261303 A CA 2261303A CA 2261303 A1 CA2261303 A1 CA 2261303A1
Authority
CA
Canada
Prior art keywords
ionically
polymeric materials
dyeable polymeric
dye
removing color
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.)
Granted
Application number
CA002261303A
Other languages
French (fr)
Other versions
CA2261303C (en
Inventor
Gordon A. Berkstresser, Iv
Richard A. Dunbar
Yiqi Yang
Lemoyne W. Plischke
George R. Mclellan
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.)
Solutia Inc
Original Assignee
Solutia 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
Priority claimed from US09/019,911 external-priority patent/US6083283A/en
Application filed by Solutia Inc filed Critical Solutia Inc
Publication of CA2261303A1 publication Critical patent/CA2261303A1/en
Application granted granted Critical
Publication of CA2261303C publication Critical patent/CA2261303C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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

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

Abstract

A method for removing color and extracting dyes from ionically dyeable polymeric materials is provided. The method includes contacting the ionically dyeable polymeric material with a swelling agent for the material under conditions sufficient to effect diffusion of the dye from the material. The process is especially useful for removing colors from ionically dyeable polymeric materials as part of a recycling process for such materials. Also, the extracted dye may be recovered for re-use as the swelling agent and contacting composition are substantially non-reactive with the dye.
CA002261303A 1998-02-06 1999-02-05 Method for removing color from ionically dyeable polymeric materials Expired - Fee Related CA2261303C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/019,911 US6083283A (en) 1996-10-24 1998-02-06 Method for removing color from ionically dyeable polymeric materials
US09/019,911 1998-02-06

Publications (2)

Publication Number Publication Date
CA2261303A1 true CA2261303A1 (en) 1999-08-06
CA2261303C CA2261303C (en) 2008-10-07

Family

ID=29581768

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002261303A Expired - Fee Related CA2261303C (en) 1998-02-06 1999-02-05 Method for removing color from ionically dyeable polymeric materials

Country Status (1)

Country Link
CA (1) CA2261303C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005054351A1 (en) * 2003-11-12 2005-06-16 Colormatrix Europe Limited Polymer colourant additive compositions, use thereof and recyclable materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005054351A1 (en) * 2003-11-12 2005-06-16 Colormatrix Europe Limited Polymer colourant additive compositions, use thereof and recyclable materials

Also Published As

Publication number Publication date
CA2261303C (en) 2008-10-07

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Effective date: 20120206