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BR9607992A - Processo para ativar polissacarìdios, polissacarìdio explodido na forma de celulose cristalinae aplicação de celulose - Google Patents

Processo para ativar polissacarìdios, polissacarìdio explodido na forma de celulose cristalinae aplicação de celulose

Info

Publication number
BR9607992A
BR9607992A BR9607992-4A BR9607992A BR9607992A BR 9607992 A BR9607992 A BR 9607992A BR 9607992 A BR9607992 A BR 9607992A BR 9607992 A BR9607992 A BR 9607992A
Authority
BR
Brazil
Prior art keywords
cellulose
polysaccharide
liquid ammonia
activating
application
Prior art date
Application number
BR9607992-4A
Other languages
English (en)
Inventor
Ties Karstens
Original Assignee
Rhodia Ag Rhone Poulenc
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 Ag Rhone Poulenc filed Critical Rhodia Ag Rhone Poulenc
Publication of BR9607992A publication Critical patent/BR9607992A/pt

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/02—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases or salts
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
    • C08B1/06—Rendering cellulose suitable for etherification
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B30/00—Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin
    • C08B30/12—Degraded, destructured or non-chemically modified starch, e.g. mechanically, enzymatically or by irradiation; Bleaching of starch
    • 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
    • C08B37/0027—2-Acetamido-2-deoxy-beta-glucans; Derivatives thereof
    • C08B37/003—Chitin, i.e. 2-acetamido-2-deoxy-(beta-1,4)-D-glucan or N-acetyl-beta-1,4-D-glucosamine; Chitosan, i.e. deacetylated product of chitin or (beta-1,4)-D-glucosamine; 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
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/24—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Textile Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Emergency Medicine (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

"PROCESSO PARA ATIVAR POLISSACARìDIOS, POLISSACARìDIO EXPLODIDO NA FORMA DE CELULOSE CRISTALINA E APLICAçãO DE CELULOSE", sendo o material de partida de polissicarídio contatado com amónia líquida a uma pressão inicial que é mais elevada que a pressão inicial que é mais elevada que a pressão atmosférica e a uma temperatura de pelo menos aproximadamente 25°C, a quantidade de amónia líquida sendo suficiente para pelo menos umedecer a superfície do material de partida de polissacarídio que é então expandido. O volume disponível para o sistema polissacarídio/amónia líquida é aumentado à maneira de uma explosão abaixando a pressão de pelo menos 5 bar. O processo é particularmente adequado para ativar celulose, goma guar, amido e quitina. O processo premite a modificação da celulose de uma maneira inédita. Os polissacarídios ativados apresentam reatividade mais elevada e eliminiação de reagentes melhorada durante a acilação, alquilação, sililação, xantogenação ou carbamoilação com processos de reação altamente hogomênea.
BR9607992-4A 1995-03-25 1996-03-22 Processo para ativar polissacarìdios, polissacarìdio explodido na forma de celulose cristalinae aplicação de celulose BR9607992A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19511061 1995-03-25
PCT/EP1996/001274 WO1996030411A1 (de) 1995-03-25 1996-03-22 Verfahren zur aktivierung von polysacchariden, danach hergestellte polysaccharide und deren verwendung

Publications (1)

Publication Number Publication Date
BR9607992A true BR9607992A (pt) 1999-11-30

Family

ID=7757778

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9607992-4A BR9607992A (pt) 1995-03-25 1996-03-22 Processo para ativar polissacarìdios, polissacarìdio explodido na forma de celulose cristalinae aplicação de celulose

Country Status (20)

Country Link
US (1) US5939544A (pt)
EP (1) EP0817803B1 (pt)
JP (2) JP3390015B2 (pt)
KR (1) KR100254840B1 (pt)
CN (1) CN1083454C (pt)
AT (1) ATE181338T1 (pt)
AU (1) AU695331B2 (pt)
BG (1) BG62778B1 (pt)
BR (1) BR9607992A (pt)
CA (1) CA2214245C (pt)
CZ (1) CZ284387B6 (pt)
DE (2) DE19611416A1 (pt)
EA (1) EA000169B1 (pt)
ES (1) ES2135221T3 (pt)
HU (1) HUP9802337A3 (pt)
PL (1) PL322468A1 (pt)
RO (1) RO115053B1 (pt)
SK (1) SK128597A3 (pt)
WO (1) WO1996030411A1 (pt)
ZA (1) ZA962370B (pt)

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Also Published As

Publication number Publication date
CZ284387B6 (cs) 1998-11-11
HUP9802337A3 (en) 1999-03-29
MX9707309A (es) 1997-11-29
WO1996030411A1 (de) 1996-10-03
CA2214245A1 (en) 1996-10-03
HUP9802337A2 (hu) 1999-02-01
AU5148196A (en) 1996-10-16
ES2135221T3 (es) 1999-10-16
SK128597A3 (en) 1998-03-04
CZ300597A3 (en) 1997-12-17
DE19611416A1 (de) 1996-09-26
PL322468A1 (en) 1998-02-02
CN1083454C (zh) 2002-04-24
CA2214245C (en) 2001-10-02
KR100254840B1 (ko) 2000-05-01
JPH10505130A (ja) 1998-05-19
ATE181338T1 (de) 1999-07-15
DE59602248D1 (de) 1999-07-22
BG101888A (en) 1998-04-30
BG62778B1 (bg) 2000-07-31
RO115053B1 (ro) 1999-10-29
CN1179781A (zh) 1998-04-22
AU695331B2 (en) 1998-08-13
US5939544A (en) 1999-08-17
JP3390015B2 (ja) 2003-03-24
EA000169B1 (ru) 1998-10-29
JP2002161101A (ja) 2002-06-04
EP0817803A1 (de) 1998-01-14
EP0817803B1 (de) 1999-06-16
KR19980703294A (ko) 1998-10-15
ZA962370B (en) 1996-10-07
EA199700268A1 (ru) 1998-02-26

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