BR0312077B8 - método de despolimerização de polissacarídeos - Google Patents

método de despolimerização de polissacarídeos

Info

Publication number
BR0312077B8
BR0312077B8 BRPI0312077A BR0312077A BR0312077B8 BR 0312077 B8 BR0312077 B8 BR 0312077B8 BR PI0312077 A BRPI0312077 A BR PI0312077A BR 0312077 A BR0312077 A BR 0312077A BR 0312077 B8 BR0312077 B8 BR 0312077B8
Authority
BR
Brazil
Prior art keywords
guar
galactomannan
daltons
molecular weight
depolymerized
Prior art date
Application number
BRPI0312077A
Other languages
English (en)
Other versions
BR0312077A (pt
Inventor
Priou Christian
Zhaoqing Liu Leo
Original Assignee
Rhodia
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 Rhodia filed Critical Rhodia
Publication of BR0312077A publication Critical patent/BR0312077A/pt
Publication of BR0312077B8 publication Critical patent/BR0312077B8/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
    • C08B37/006—Heteroglycans, i.e. polysaccharides having more than one sugar residue in the main chain in either alternating or less regular sequence; Gellans; Succinoglycans; Arabinogalactans; Tragacanth or gum tragacanth or traganth from Astragalus; Gum Karaya from Sterculia urens; Gum Ghatti from Anogeissus latifolia; Derivatives thereof
    • C08B37/0087—Glucomannans or galactomannans; Tara or tara gum, i.e. D-mannose and D-galactose units, e.g. from Cesalpinia spinosa; Tamarind gum, i.e. D-galactose, D-glucose and D-xylose units, e.g. from Tamarindus indica; Gum Arabic, i.e. L-arabinose, L-rhamnose, D-galactose and D-glucuronic acid units, e.g. from Acacia Senegal or Acacia Seyal; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
    • C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
    • C08B37/0024—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
    • C08B37/0033—Xanthan, i.e. D-glucose, D-mannose and D-glucuronic acid units, saubstituted with acetate and pyruvate, with a main chain of (beta-1,4)-D-glucose units; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
    • C08B37/006—Heteroglycans, i.e. polysaccharides having more than one sugar residue in the main chain in either alternating or less regular sequence; Gellans; Succinoglycans; Arabinogalactans; Tragacanth or gum tragacanth or traganth from Astragalus; Gum Karaya from Sterculia urens; Gum Ghatti from Anogeissus latifolia; Derivatives thereof
    • C08B37/0087—Glucomannans or galactomannans; Tara or tara gum, i.e. D-mannose and D-galactose units, e.g. from Cesalpinia spinosa; Tamarind gum, i.e. D-galactose, D-glucose and D-xylose units, e.g. from Tamarindus indica; Gum Arabic, i.e. L-arabinose, L-rhamnose, D-galactose and D-glucuronic acid units, e.g. from Acacia Senegal or Acacia Seyal; Derivatives thereof
    • C08B37/0096—Guar, guar gum, guar flour, guaran, i.e. (beta-1,4) linked D-mannose units in the main chain branched with D-galactose units in (alpha-1,6), e.g. from Cyamopsis Tetragonolobus; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/60—Compositions for stimulating production by acting on the underground formation
    • C09K8/62—Compositions for forming crevices or fractures
    • C09K8/66—Compositions based on water or polar solvents
    • C09K8/68—Compositions based on water or polar solvents containing organic compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/60—Compositions for stimulating production by acting on the underground formation
    • C09K8/84—Compositions based on water or polar solvents
    • C09K8/86—Compositions based on water or polar solvents containing organic compounds
    • C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
    • C09K8/90—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose

Abstract

"método de despolimerização de polissacarídeos, galactomanana, e, agente de fraturamento de poço de óleo". um método de despolimerização de polímeros de polissacarídeos do tipo galactomanana e xantana, preferivelmente galactomananas, para um peso molecular inferior pré-selecionado por irradiação com feixes de elétrons de alta energia. as galactomananas preferidas para tratamento de acordo com este método são goma guar, guar nativa (guar splits) e hidropropil guar. em uma forma de realização preferida, a goma guar é despolimerizada preferivelmente para um peso molecular de cerca de 150.000 daltons a cerca de 200.000 daltons. a guar despolimerizada tem uma polidispersão de menos que cerca de 3,0 e é útil no fraturamento de poço de óleo para melhorar a produção de óleo.
BRPI0312077A 2002-06-25 2003-06-24 método de despolimerização de polissacarídeos BR0312077B8 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US39132002P 2002-06-25 2002-06-25
PCT/US2003/020015 WO2004000885A2 (en) 2002-06-25 2003-06-24 Molecular weight reduction of polysaccharides by electron beams

Publications (2)

Publication Number Publication Date
BR0312077A BR0312077A (pt) 2005-04-05
BR0312077B8 true BR0312077B8 (pt) 2017-10-24

Family

ID=30000690

Family Applications (2)

Application Number Title Priority Date Filing Date
BRPI0312077-5A BRPI0312077B1 (pt) 2002-06-25 2003-06-24 Method of depolymerization of polysaccharides
BRPI0312077A BR0312077B8 (pt) 2002-06-25 2003-06-24 método de despolimerização de polissacarídeos

Family Applications Before (1)

Application Number Title Priority Date Filing Date
BRPI0312077-5A BRPI0312077B1 (pt) 2002-06-25 2003-06-24 Method of depolymerization of polysaccharides

Country Status (8)

Country Link
US (1) US7259192B2 (pt)
EP (1) EP1551882B1 (pt)
JP (2) JP4653861B2 (pt)
CN (2) CN1309742C (pt)
AU (1) AU2003263753A1 (pt)
BR (2) BRPI0312077B1 (pt)
RU (1) RU2323943C2 (pt)
WO (1) WO2004000885A2 (pt)

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Also Published As

Publication number Publication date
RU2323943C2 (ru) 2008-05-10
US20040072699A1 (en) 2004-04-15
CN1970680A (zh) 2007-05-30
BR0312077A (pt) 2005-04-05
CN1309742C (zh) 2007-04-11
RU2005101751A (ru) 2005-09-10
US7259192B2 (en) 2007-08-21
AU2003263753A1 (en) 2004-01-06
JP2005530897A (ja) 2005-10-13
BRPI0312077B1 (pt) 2017-06-13
CN1671749A (zh) 2005-09-21
EP1551882A2 (en) 2005-07-13
JP4653861B2 (ja) 2011-03-16
EP1551882B1 (en) 2016-05-11
CN1970680B (zh) 2015-08-26
WO2004000885A2 (en) 2003-12-31
AU2003263753A8 (en) 2004-01-06
JP2010285615A (ja) 2010-12-24
JP5580110B2 (ja) 2014-08-27
EP1551882A4 (en) 2005-12-14
WO2004000885A3 (en) 2004-03-18

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B09W Correction of the decision to grant [chapter 9.1.4 patent gazette]
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