GB2348893A - Method for separating wax from waste paper - Google Patents

Method for separating wax from waste paper

Info

Publication number
GB2348893A
GB2348893A GB0019433A GB0019433A GB2348893A GB 2348893 A GB2348893 A GB 2348893A GB 0019433 A GB0019433 A GB 0019433A GB 0019433 A GB0019433 A GB 0019433A GB 2348893 A GB2348893 A GB 2348893A
Authority
GB
United Kingdom
Prior art keywords
wax
paper
solvent
waste paper
separating wax
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
GB0019433A
Other versions
GB0019433D0 (en
GB2348893B (en
Inventor
Rohinikumar Vemula
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.)
Individual
Original Assignee
Individual
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 US09/006,688 external-priority patent/US5891303A/en
Application filed by Individual filed Critical Individual
Publication of GB0019433D0 publication Critical patent/GB0019433D0/en
Publication of GB2348893A publication Critical patent/GB2348893A/en
Application granted granted Critical
Publication of GB2348893B publication Critical patent/GB2348893B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/02—Working-up waste paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/08—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching
    • D21C9/086—Removal of fats, resins, pitch or waxes; Chemical or physical purification, i.e. refining, of crude cellulose by removing non-cellulosic contaminants, optionally combined with bleaching with organic compounds or compositions comprising organic compounds
    • 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
    • Y02W30/64—Paper recycling

Abstract

A method for separating wax from wax containing paper. The method involves immersing the wax containing paper in a heated alkane solvent, preferably n-hexane, to dissolve the wax contained in the paper into the solvent. The dissolved wax and solvent forms a miscella which is later separated from the paper. Any residual solvent absorbed in the paper is removed therefrom. The method also involves retrieving the wax from the miscella.
GB0019433A 1998-01-13 1998-12-15 Method for separating wax from waste paper Expired - Lifetime GB2348893B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/006,688 US5891303A (en) 1998-01-13 1998-01-13 Method for separating wax from waste paper
IN209MA1998 1998-02-03
PCT/US1998/026597 WO1999036199A1 (en) 1998-01-13 1998-12-15 Method for separating wax from waste paper

Publications (3)

Publication Number Publication Date
GB0019433D0 GB0019433D0 (en) 2000-09-27
GB2348893A true GB2348893A (en) 2000-10-18
GB2348893B GB2348893B (en) 2002-02-20

Family

ID=26324760

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0019433A Expired - Lifetime GB2348893B (en) 1998-01-13 1998-12-15 Method for separating wax from waste paper

Country Status (6)

Country Link
AU (1) AU737020B2 (en)
BR (1) BR9815666A (en)
CA (1) CA2316362C (en)
GB (1) GB2348893B (en)
HK (1) HK1032987A1 (en)
WO (1) WO1999036199A1 (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183259A (en) * 1937-03-03 1939-12-12 Nat Oil Prod Co Process for recovering and reusing constituents of waxed paper
US2614922A (en) * 1947-11-13 1952-10-21 R H Comey Company Inc Methods of dewaxing paper
US2703754A (en) * 1949-07-27 1955-03-08 Myers Robert Evershed Process of treating waxed paper
US2742398A (en) * 1951-06-09 1956-04-17 Texaco Development Corp Method of removing deposits of wax and like materials
US2746862A (en) * 1952-09-05 1956-05-22 Mcdonald Dan Dewaxing methods and apparatus
US2776209A (en) * 1954-04-21 1957-01-01 Du Pont Paper deinking and dewaxing process
US3055791A (en) * 1959-10-27 1962-09-25 Minerals & Chem Philipp Corp Process for dewaxing paper and reclaiming cellulosic fiber
US3595741A (en) * 1970-03-09 1971-07-27 Riverside Paper Corp Method of reclaiming stock from waste material
US3822178A (en) * 1971-08-11 1974-07-02 Wright Chem Corp Process for repulping waxed paper using a water soluble nonionic emulsifier
US5209785A (en) * 1991-10-30 1993-05-11 United Technologies Corporation Non-chlorinated solvent dewax process

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183259A (en) * 1937-03-03 1939-12-12 Nat Oil Prod Co Process for recovering and reusing constituents of waxed paper
US2614922A (en) * 1947-11-13 1952-10-21 R H Comey Company Inc Methods of dewaxing paper
US2703754A (en) * 1949-07-27 1955-03-08 Myers Robert Evershed Process of treating waxed paper
US2742398A (en) * 1951-06-09 1956-04-17 Texaco Development Corp Method of removing deposits of wax and like materials
US2746862A (en) * 1952-09-05 1956-05-22 Mcdonald Dan Dewaxing methods and apparatus
US2776209A (en) * 1954-04-21 1957-01-01 Du Pont Paper deinking and dewaxing process
US3055791A (en) * 1959-10-27 1962-09-25 Minerals & Chem Philipp Corp Process for dewaxing paper and reclaiming cellulosic fiber
US3595741A (en) * 1970-03-09 1971-07-27 Riverside Paper Corp Method of reclaiming stock from waste material
US3822178A (en) * 1971-08-11 1974-07-02 Wright Chem Corp Process for repulping waxed paper using a water soluble nonionic emulsifier
US5209785A (en) * 1991-10-30 1993-05-11 United Technologies Corporation Non-chlorinated solvent dewax process

Also Published As

Publication number Publication date
WO1999036199A1 (en) 1999-07-22
GB0019433D0 (en) 2000-09-27
CA2316362C (en) 2007-11-13
CA2316362A1 (en) 1999-07-22
AU737020B2 (en) 2001-08-09
GB2348893B (en) 2002-02-20
AU1827099A (en) 1999-08-02
HK1032987A1 (en) 2001-08-10
BR9815666A (en) 2000-11-14

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20181214