BR9815666A - Method for separating wax from paper containing wax. - Google Patents

Method for separating wax from paper containing wax.

Info

Publication number
BR9815666A
BR9815666A BR9815666A BR9815666A BR9815666A BR 9815666 A BR9815666 A BR 9815666A BR 9815666 A BR9815666 A BR 9815666A BR 9815666 A BR9815666 A BR 9815666A BR 9815666 A BR9815666 A BR 9815666A
Authority
BR
Brazil
Prior art keywords
wax
paper
separating
solvent
paper containing
Prior art date
Application number
BR9815666A
Other languages
Portuguese (pt)
Inventor
Rohinikumar Vemula
Original Assignee
Rohinikumar Vemula
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 Rohinikumar Vemula filed Critical Rohinikumar Vemula
Publication of BR9815666A publication Critical patent/BR9815666A/en

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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Processing Of Solid Wastes (AREA)
  • Fats And Perfumes (AREA)

Abstract

MéTODO PARA A SEPARAçãO DE CERA DE PAPEL CONTENDO CERA. O método envolve a imersão de dito papel contendo cera em um solvente alcano aquecido, preferencialmente n-hexano, para dissolver a cera contida no papel dentro do solvente. A cera dissolvida e o solvente formam uma mistura que é posteriormente separada do papel. Qualquer solvente residual absorvido no papel é removido deste. O método também inclui a recuperação da cera da mistura.METHOD FOR SEPARATING PAPER WAX CONTAINING WAX. The method involves immersing said wax-containing paper in a heated alkane solvent, preferably n-hexane, to dissolve the wax contained in the paper within the solvent. The dissolved wax and solvent form a mixture which is then separated from the paper. Any residual solvent absorbed into the paper is removed from the paper. The method also includes recovering the wax from the mixture.

BR9815666A 1998-01-13 1998-12-15 Method for separating wax from paper containing wax. BR9815666A (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 (1)

Publication Number Publication Date
BR9815666A true BR9815666A (en) 2000-11-14

Family

ID=26324760

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9815666A BR9815666A (en) 1998-01-13 1998-12-15 Method for separating wax from paper containing wax.

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)

Family Cites Families (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
GB0019433D0 (en) 2000-09-27
GB2348893A (en) 2000-10-18
AU737020B2 (en) 2001-08-09
AU1827099A (en) 1999-08-02
WO1999036199A1 (en) 1999-07-22
CA2316362A1 (en) 1999-07-22
CA2316362C (en) 2007-11-13
HK1032987A1 (en) 2001-08-10
GB2348893B (en) 2002-02-20

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Legal Events

Date Code Title Description
B06A Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law
B09A Decision: intention to grant
B16A Patent or certificate of addition of invention granted

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 15/12/1998, OBSERVADAS AS CONDICOES LEGAIS.

B21A Expiry acc. art. 78, item i of ipl- expiry of the term of protection

Free format text: PATENTE EXTINTA EM 15.12.2018