GB779820A - Process for the production of cellulose or cellulose containing material having acid properties - Google Patents

Process for the production of cellulose or cellulose containing material having acid properties

Info

Publication number
GB779820A
GB779820A GB992254A GB992254A GB779820A GB 779820 A GB779820 A GB 779820A GB 992254 A GB992254 A GB 992254A GB 992254 A GB992254 A GB 992254A GB 779820 A GB779820 A GB 779820A
Authority
GB
United Kingdom
Prior art keywords
cellulose
fibres
employed
nitrogen dioxide
flakes
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.)
Expired
Application number
GB992254A
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
Application filed by Individual filed Critical Individual
Priority to GB992254A priority Critical patent/GB779820A/en
Publication of GB779820A publication Critical patent/GB779820A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
    • C08B15/02—Oxycellulose; Hydrocellulose; Cellulosehydrate, e.g. microcrystalline cellulose
    • C08B15/04—Carboxycellulose, e.g. prepared by oxidation with nitrogen dioxide

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

Oxycellulose is obtained by passing nitrogen dioxide or a gaseous mixture containing nitrogen dioxide through cellulose or cellulose-containing material at such a rate that substantially no nitration or parchmentation of the cellulose takes place, the pressure or partial pressure of nitrogen dioxide in the gas being subatmospheric and correlated with the temperature so as to render the cellulosic material alkali-soluble. Mixtures of nitrogen dioxide with inert gases, e.g. air, oxygen and nitrogen, may be employed. The reaction may be effected at 45-65 DEG C. The cellulosic material may be oxidized in the form of fibres, flakes, wadding or paper. In the case of fibres or flakes treatment may be effected in conical or other shaped chambers employing the suspension or turbulence-bed techniques, the fibres or flakes being kept in suspension by the upflowing gases. If desired, several chambers may be arranged in series, the upflow gas velocities increasing progressively to expel the oxidized cellulose from one chamber into the next. Creped paper may be treated in rolls. Deacidification of the oxycellulose may be effected by passing inert gases through the material, or alternatively superheated steam may be so employed at reduced pressure and at 50-70 DEG C., and, in either case, fluctuating pressures may be employed. The steam effluent may be rectified to remove nitric acid, superheated and recirculated, the nitric acid so recovered being thermally degraded to yield a nitrogen dioxide-oxygen mixture which is then employed as the gaseous oxidizing agent. The oxycellulose in the form of fibres, flakes, wadding or paper may be employed for the dealkalization and cleaning of gases, and liquids, the trace-purification of coal and synthesis gases, for filtering tobacco smoke, for preparing spinning and casting solutions for the manufacture of fibres and films and for the manufacture of artificial catgut and wound tampons.
GB992254A 1954-04-05 1954-04-05 Process for the production of cellulose or cellulose containing material having acid properties Expired GB779820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB992254A GB779820A (en) 1954-04-05 1954-04-05 Process for the production of cellulose or cellulose containing material having acid properties

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB992254A GB779820A (en) 1954-04-05 1954-04-05 Process for the production of cellulose or cellulose containing material having acid properties

Publications (1)

Publication Number Publication Date
GB779820A true GB779820A (en) 1957-07-24

Family

ID=6687288

Family Applications (1)

Application Number Title Priority Date Filing Date
GB992254A Expired GB779820A (en) 1954-04-05 1954-04-05 Process for the production of cellulose or cellulose containing material having acid properties

Country Status (1)

Country Link
GB (1) GB779820A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3269796A (en) * 1963-01-16 1966-08-30 Russell M H Kullman Process of imparting wash-wear properties and fixing creases in cellulosic fabrics by nitrogen dioxide treatment
EP0815879A2 (en) * 1996-06-28 1998-01-07 JOHNSON & JOHNSON MEDICAL, INC. Bioabsorbable medical devices from oxidized polysaccharides
EP0815881A2 (en) * 1996-06-28 1998-01-07 JOHNSON & JOHNSON MEDICAL, INC. Bioresorbable oxidized cellulose composite material for prevention of postsurgical adhesions
WO2010070123A1 (en) 2008-12-18 2010-06-24 Kalys Novel method for the controlled hydrolysis of polysaccharides
DE102010034782A1 (en) * 2010-08-18 2012-02-23 Carl Freudenberg Kg Process for the preparation of oxidized cellulose fibers, oxidized cellulose fiber sheets or oxidized cellulose nonwovens and their use

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3269796A (en) * 1963-01-16 1966-08-30 Russell M H Kullman Process of imparting wash-wear properties and fixing creases in cellulosic fabrics by nitrogen dioxide treatment
EP0815879A2 (en) * 1996-06-28 1998-01-07 JOHNSON & JOHNSON MEDICAL, INC. Bioabsorbable medical devices from oxidized polysaccharides
EP0815881A2 (en) * 1996-06-28 1998-01-07 JOHNSON & JOHNSON MEDICAL, INC. Bioresorbable oxidized cellulose composite material for prevention of postsurgical adhesions
EP0815881A3 (en) * 1996-06-28 1999-12-22 JOHNSON & JOHNSON MEDICAL, INC. Bioresorbable oxidized cellulose composite material for prevention of postsurgical adhesions
EP0815879A3 (en) * 1996-06-28 1999-12-22 JOHNSON & JOHNSON MEDICAL, INC. Bioabsorbable medical devices from oxidized polysaccharides
US6500777B1 (en) 1996-06-28 2002-12-31 Ethicon, Inc. Bioresorbable oxidized cellulose composite material for prevention of postsurgical adhesions
WO2010070123A1 (en) 2008-12-18 2010-06-24 Kalys Novel method for the controlled hydrolysis of polysaccharides
FR2940293A1 (en) * 2008-12-18 2010-06-25 Kalys NOVEL PROCESS FOR CONTROLLED HYDROLYSIS OF POLYSACCHARIDES
DE102010034782A1 (en) * 2010-08-18 2012-02-23 Carl Freudenberg Kg Process for the preparation of oxidized cellulose fibers, oxidized cellulose fiber sheets or oxidized cellulose nonwovens and their use
EP2606173A1 (en) * 2010-08-18 2013-06-26 Carl Freudenberg KG Method for the production of oxidized cellulose fibers, oxidized cellulose fiber sheet materials or oxidized cellulose nonwovens, and use thereof

Similar Documents

Publication Publication Date Title
GB779820A (en) Process for the production of cellulose or cellulose containing material having acid properties
SE8105552L (en) PROCEDURE FOR DELIGNIFICATING WHITE CELLULOSAMASSA
GB1494047A (en) Activated alkali cellulose and derivatives formed therefrom and a process for making the same
SE9000434D0 (en) SET AND REACTOR FOR EXTRACTION OF ENERGY AND CHEMICALS
US3007917A (en) Production of oxycellulose material
GB1380960A (en) Process for the production of free sulphur from hydrogen sulphide
US3647363A (en) Recovery of sulfur values from flue gases with oxidized neutral sulfite green liquor
GB903425A (en) Method of purifying gaseous mixtures from acidic compounds
FR2271310A1 (en) Adsorptive active carbon fibre prodn. - by thermal treatment of cellulose fibres impregnated with phosphorus cpd. and opt. nitrogen cpd.
ATE3108T1 (en) PROCESS FOR THE HYDROTHERMAL PRODUCTION OF SODIUM SILICATE SOLUTIONS IN A STATIC REACTION VESSEL.
US3478752A (en) Cellulosic smoking product and method in the preparation of same
US2710788A (en) Treatment of sodium cyanide
GB1384776A (en) Process for producing potassium superoxide
US2159643A (en) Method for producing cellulose esters
US1429953A (en) Manufacture of urea from ammonia and carbon dioxide
GB1251925A (en)
SU372305A1 (en) METHOD OF OBTAINING CELLULOSE
SU536269A1 (en) Pulp Production Method
US1526529A (en) Process for the production of hydrogen
FR2242514A1 (en) Chlorine dioxide prodn associated with cellulose pulp bleaching - where it is used as bleaching agent
GB282508A (en) Improved process for the oxidation of hydrogen sulphide contained in industrial gases to sulphur
SU405566A1 (en) METHOD FOR CLEANING GAS FROM HYDROGEN
SU690100A1 (en) Method of obtaining semi-finished fibrous pulp product
GB775933A (en) Process for the manufacture of pure urea
RU1813711C (en) Method of noncorrosive-active thermally expanded graphite producing