GB986999A - A process for the production of sodium carboxymethylcellulose from jute and oil-in-water emulsions prepared therefrom - Google Patents
A process for the production of sodium carboxymethylcellulose from jute and oil-in-water emulsions prepared therefromInfo
- Publication number
- GB986999A GB986999A GB3319163A GB3319163A GB986999A GB 986999 A GB986999 A GB 986999A GB 3319163 A GB3319163 A GB 3319163A GB 3319163 A GB3319163 A GB 3319163A GB 986999 A GB986999 A GB 986999A
- Authority
- GB
- United Kingdom
- Prior art keywords
- jute
- cellulose
- sodium
- sodium carboxymethyl
- carboxymethyl cellulose
- 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
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23D—EDIBLE OILS OR FATS, e.g. MARGARINES, SHORTENINGS, COOKING OILS
- A23D7/00—Edible oil or fat compositions containing an aqueous phase, e.g. margarines
- A23D7/003—Compositions other than spreads
-
- 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
- C08B1/08—Alkali cellulose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B11/00—Preparation of cellulose ethers
- C08B11/02—Alkyl or cycloalkyl ethers
- C08B11/04—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals
- C08B11/10—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals
- C08B11/12—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals substituted with carboxylic radicals, e.g. carboxymethylcellulose [CMC]
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Medicinal Chemistry (AREA)
- Biochemistry (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Food Science & Technology (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Sodium carboxymethyl cellulose is made by steeping pure jute cellulose in a 30-70% caustic soda solution for 1-2 hours at 20-25 DEG C., with a cellulose/alkali solution ratio of from 1 : 4 to 1 : 5 (weight/volume) pressing out excess of alkali from the mass, and mixing the resulting sodium cellulose with chloroacetic acid for 4 to 6 hours at 35-45 DEG C., whereby sodium carboxymethyl cellulose having a degree of substitution of 0.6 to 1.1 is obtained. Preferably, the excess of alkali is pressed out to a weight of 4-5 times the original weight of cellulose. Solid chloracetic acid, or a 70-80% solution thereof, may be used, but the sodium cellulose must not be allowed to dry during the reaction with chloracetic acid. The product may be freed from glycollic acid impurities by washing with acetone or hot 80% by weight ethyl alcohol. The degree of substitution of the product may be varied by adjustment of the concentration of the caustic soda solution. For the method of preparing the jute cellulose (see Division D2); for the use of the products as emulsion stabilizers (see Division B1).ALSO:Oil-in-water emulsions contain as emulsifying agent a sodium carboxymethyl cellulose having a degree of substitution of 0,6 to 1,1. In examples: (i) an emulsion of olive oil and water in a ratio of 1 : 2 by volume is stabilized by the addition of said agent in a concentration of 2,5% (w/v) of the aqueous phase. The emulsion is stable for 40 days and shows no creaming; (ii) castor oil and water emulsions in ratios of 1 : 1 and 1,5 : 1 by volume are stabilized by the addition of said agent in a concentration of 2% of the aqueous phase. The emulsions are stable for 30 days and show no creaming. For the preparation of the sodium carboxymethyl cellulose from jute cellulose, see Division C3.ALSO:Pure jute cellulose is prepared either by chlorinating powdered jute, removing the resulting chloro derivatives of lignin by boiling with sodium sulphite, and repeating this treatment until the jute powders becomes white, or alternatively by boiling powdered jute in about 1% caustic soda solution, placing the jute after washing with water under a slow stream of chlorine till the jute becomes golden yellow, boiling the chlorinated jute with about 2% sodium sulphite solution (containing 0.2% NaoH) and washing the resulting product with hot water whereby pure, white jute cellulose is obtained. Powdered jute for either process may be made by cutting jute fibres or jute cuttings into small pieces and milling. For the use of the product in the preparation of sodium carboxymethyl cellulose see Division C3.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3319163A GB986999A (en) | 1963-08-21 | 1963-08-21 | A process for the production of sodium carboxymethylcellulose from jute and oil-in-water emulsions prepared therefrom |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3319163A GB986999A (en) | 1963-08-21 | 1963-08-21 | A process for the production of sodium carboxymethylcellulose from jute and oil-in-water emulsions prepared therefrom |
Publications (1)
Publication Number | Publication Date |
---|---|
GB986999A true GB986999A (en) | 1965-03-24 |
Family
ID=10349760
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3319163A Expired GB986999A (en) | 1963-08-21 | 1963-08-21 | A process for the production of sodium carboxymethylcellulose from jute and oil-in-water emulsions prepared therefrom |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB986999A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110214932A (en) * | 2019-06-11 | 2019-09-10 | 华南理工大学 | A kind of high temperature resistant sodium carboxymethylcellulose and preparation method thereof |
WO2022006644A1 (en) * | 2020-07-07 | 2022-01-13 | Cnpem - Centro Nacional De Pesquisa Em Energia E Materiais | Nanofibrillated cellulose emulsion, emulsification process, use of cationic nanofibrillated cellulose and use of emulsion |
WO2024132989A1 (en) * | 2022-12-18 | 2024-06-27 | KHAN, Shauk Muntaha Murshid | A production process for totally biodegradable biopolymer from jute |
-
1963
- 1963-08-21 GB GB3319163A patent/GB986999A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110214932A (en) * | 2019-06-11 | 2019-09-10 | 华南理工大学 | A kind of high temperature resistant sodium carboxymethylcellulose and preparation method thereof |
CN110214932B (en) * | 2019-06-11 | 2022-02-15 | 华南理工大学 | High-temperature-resistant sodium carboxymethyl cellulose and preparation method thereof |
WO2022006644A1 (en) * | 2020-07-07 | 2022-01-13 | Cnpem - Centro Nacional De Pesquisa Em Energia E Materiais | Nanofibrillated cellulose emulsion, emulsification process, use of cationic nanofibrillated cellulose and use of emulsion |
WO2024132989A1 (en) * | 2022-12-18 | 2024-06-27 | KHAN, Shauk Muntaha Murshid | A production process for totally biodegradable biopolymer from jute |
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