GB597379A - Method for the preparation of purified cellulose - Google Patents
Method for the preparation of purified celluloseInfo
- Publication number
- GB597379A GB597379A GB2106245A GB2106245A GB597379A GB 597379 A GB597379 A GB 597379A GB 2106245 A GB2106245 A GB 2106245A GB 2106245 A GB2106245 A GB 2106245A GB 597379 A GB597379 A GB 597379A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnesium
- calcium
- water
- cellulose
- treated
- 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
Links
- 229920002678 cellulose Polymers 0.000 title abstract 7
- 239000001913 cellulose Substances 0.000 title abstract 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 6
- 229960005069 Calcium Drugs 0.000 abstract 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 4
- 239000011575 calcium Substances 0.000 abstract 4
- 229910052791 calcium Inorganic materials 0.000 abstract 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 4
- 239000011777 magnesium Substances 0.000 abstract 4
- 229910052749 magnesium Inorganic materials 0.000 abstract 4
- 229910001424 calcium ion Inorganic materials 0.000 abstract 3
- 159000000003 magnesium salts Chemical class 0.000 abstract 3
- 239000008239 natural water Substances 0.000 abstract 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 229910001415 sodium ion Inorganic materials 0.000 abstract 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 2
- 150000002681 magnesium compounds Chemical class 0.000 abstract 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 abstract 1
- 229960003563 Calcium Carbonate Drugs 0.000 abstract 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 1
- 229920000742 Cotton Polymers 0.000 abstract 1
- 235000015450 Tilia cordata Nutrition 0.000 abstract 1
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 239000007844 bleaching agent Substances 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 abstract 1
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 abstract 1
- 150000007942 carboxylates Chemical class 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 1
- UDYRPJABTMRVCX-UHFFFAOYSA-J dimagnesium;carbonate;dihydroxide Chemical compound [OH-].[OH-].[Mg+2].[Mg+2].[O-]C([O-])=O UDYRPJABTMRVCX-UHFFFAOYSA-J 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxyl anion Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract 1
- 239000004571 lime Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- 235000017550 sodium carbonate Nutrition 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- 235000011121 sodium hydroxide Nutrition 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
Classifications
-
- 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
- C08B1/02—Rendering cellulose suitable for esterification
-
- 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
- D21C9/083—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 inorganic compounds
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)
- Wood Science & Technology (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Purified cellulose, particularly cotton linters, is rendered more suitable for use in the production of heat stable and haze free cellulose carboxylates, by rinsing or treating it with water containing a proportion of a dissolved magnesium compound such that the treated cellulose contains a quantity of magnesium between 0.001 per cent and 0.03 per cent by weight of the cellulose and in a ratio to any calcium present of at least 1 to 3, the quantity of calcium in any case being no more than 0.03 per cent. The cellulose may be purified by any desired method, e.g. by treatment with a boiling caustic soda solution followed by treatment with dilute acid or alkaline bleach liquor, and by washing. The processing or wash water may be subjected to a water-softening treatment and the softened water may then be treated with a soluble magnesium salt to give a concentration of 5-100 parts per million of magnesium. If desired, the magnesium salt may be added to a natural water-containing calcium ions in any quantity up to about 100 parts per million and also sodium ions and the treated water may be used without removing the calcium and sodium ions. Another method of preparing the water is to pass a natural water containing calcium and sodium ions through a bed of base-exchange material which has previously been regenerated with a magnesium salt. A natural water containing a large amount of calcium and a sufficient concentration of magnesium may be treated with lime or soda ash to reduce the calcium content, but in such manner as to avoid reduction of the magnesium content as far as possible, e.g. by carrying out the operation in presence of a slurry containing solid magnesium hydroxide and calcium carbonate. The magnesium compound dissolved in the water for treating the cellulose may be a sulphate, chloride, bromide, nitrate, carbonate, bicarbonate, or hydroxide.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB597379A true GB597379A (en) | 1948-01-23 |
Family
ID=1735899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2106245A Expired GB597379A (en) | 1945-08-17 | Method for the preparation of purified cellulose |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB597379A (en) |
-
1945
- 1945-08-17 GB GB2106245A patent/GB597379A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102329275B (en) | Preparation methods of trichloroisocyanuric acid and sodium dichloro isocyanurate | |
| ES415330A1 (en) | Process for manufacture of calcium hydrochlorite | |
| GB576510A (en) | Improvements in or relating to the production of cellulose | |
| GB1009260A (en) | Process for the preparation of dense soda ash | |
| GB597379A (en) | Method for the preparation of purified cellulose | |
| GB768958A (en) | Improvements in or relating to laundry bleaching practice | |
| GB906327A (en) | Method of extracting polysaccharides | |
| GB596193A (en) | Improvements in and relating to the bleaching of cellulosic matter | |
| JPS60134092A (en) | Scale inhibitor in kraft pulp producing process | |
| US1918361A (en) | Method of manufacturing silicates with base exchanging properties, or so-called artificial zeolites | |
| US1968223A (en) | Process of treating paper pulp | |
| US2382399A (en) | Treatment of cellulose | |
| GB269909A (en) | Improvements in or relating to treating residual liquors accruing from the treatment of cellulose material | |
| GB235635A (en) | Improvements in and relating to the manufacture of glue, gelatine and meal from fish and other offal of marine origin | |
| NO118091B (en) | ||
| US2083280A (en) | High quality products from cellulose | |
| GB591537A (en) | Improvements in bleaching process and composition | |
| SU597766A1 (en) | Method of obtaining cotton pulp | |
| SU36162A1 (en) | Pulp Production Method | |
| GB729625A (en) | Improvements in or relating to the preparation of non-odorous 2-methyl-4-chlorophenoxyacetic acid and its application as a selective weed-killer | |
| SU454171A1 (en) | The method of obtaining purified brine from sea brine | |
| GB688815A (en) | Process for the treatment of aluminiumsilicates of the kind of montmorillonite for the treatment of beer or wort | |
| GB690207A (en) | Improvements in the manufacture of soap | |
| GB893498A (en) | A method of purifying cellulose | |
| US2825646A (en) | Reducing the ash content of cellulose |