GB637134A - Improvements in or relating to the manufacture of cellulose ethers - Google Patents
Improvements in or relating to the manufacture of cellulose ethersInfo
- Publication number
- GB637134A GB637134A GB2786247A GB2786247A GB637134A GB 637134 A GB637134 A GB 637134A GB 2786247 A GB2786247 A GB 2786247A GB 2786247 A GB2786247 A GB 2786247A GB 637134 A GB637134 A GB 637134A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mono
- cellulose
- ethers
- methyl
- alkyl
- 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
- 229920003086 cellulose ether Polymers 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 6
- 239000001913 cellulose Substances 0.000 abstract 5
- 229920002678 cellulose Polymers 0.000 abstract 5
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 abstract 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 abstract 3
- -1 Ether alcohols Chemical class 0.000 abstract 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 abstract 3
- 239000003513 alkali Substances 0.000 abstract 3
- 239000003795 chemical substances by application Substances 0.000 abstract 3
- 239000000243 solution Substances 0.000 abstract 3
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical class CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 abstract 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 abstract 2
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 abstract 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 abstract 2
- 229920001131 Pulp (paper) Polymers 0.000 abstract 2
- 125000000217 alkyl group Chemical group 0.000 abstract 2
- 239000003518 caustics Substances 0.000 abstract 2
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 abstract 2
- 238000006266 etherification reaction Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 235000011121 sodium hydroxide Nutrition 0.000 abstract 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 abstract 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 1
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 abstract 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 abstract 1
- 150000001298 alcohols Chemical class 0.000 abstract 1
- 150000001346 alkyl aryl ethers Chemical class 0.000 abstract 1
- 150000005215 alkyl ethers Chemical class 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 239000001768 carboxy methyl cellulose Substances 0.000 abstract 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 abstract 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 abstract 1
- FOCAUTSVDIKZOP-UHFFFAOYSA-N chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 abstract 1
- 150000001923 cyclic compounds Chemical class 0.000 abstract 1
- HPXRVTGHNJAIIH-UHFFFAOYSA-N cyclohexanol Chemical group OC1CCCCC1 HPXRVTGHNJAIIH-UHFFFAOYSA-N 0.000 abstract 1
- MHDVGSVTJDSBDK-UHFFFAOYSA-N dibenzyl ether Chemical class C=1C=CC=CC=1COCC1=CC=CC=C1 MHDVGSVTJDSBDK-UHFFFAOYSA-N 0.000 abstract 1
- 150000002085 enols Chemical class 0.000 abstract 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract 1
- 150000002170 ethers Chemical class 0.000 abstract 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 abstract 1
- 150000002334 glycols Chemical class 0.000 abstract 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract 1
- 229940071826 hydroxyethyl cellulose Drugs 0.000 abstract 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 abstract 1
- 150000002576 ketones Chemical class 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229940050176 methyl chloride Drugs 0.000 abstract 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229920001223 polyethylene glycol Polymers 0.000 abstract 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 abstract 1
- 125000000547 substituted alkyl group Chemical group 0.000 abstract 1
- 238000006467 substitution reaction 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
- C08B11/00—Preparation of cellulose ethers
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)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Cellulose ethers are made by reacting cellulose with an etherifying agent in the presence of a caustic alkali in aqueous solution and a liquid ether-alcohol. Ether alcohols specified are the lower mono-alkyl ethers of glycols such as the mono-methyl, mono-ethyl, mono-propyl, iso-propyl and mono-butyl ethers of ethylene glycol, diethylene glycol and other polyethylene glycols, the mono- and di-lower alkyl ethers of glycerol, and cyclic compounds such as quinitol mono-alkyl ethers. The ether-alcohol may be used in the proportion of 10-30 per cent based on the weight of the cellulose. It may be added either simultaneously with or after the etherifying agent, or at an earlier stage in the process. The alkali cellulose may be made by impregnating the cellulose with a caustic alkali solution, particularly of 70 per cent strength. The etherification temperature may range from 40-140 DEG C., depending on the etherification agent used. Alkyl and substituted alkyl ethers of cellulose, for example propyl and butyl ethers, benzyl ethers and mixed ethers such as methyl-hydroxy-ethyl cellulose may be produced. In an example, wood pulp in sheet form is soaked in caustic soda solution containing mono-methyl glycol, pressed, and then introduced into an autoclave to which methyl chloride is added. In another example, portions of chloracetic acid are added at intervals to shredded wood pulp, caustic soda solution and mono-methyl glycol and the mixture is kneaded. Carboxymethyl cellulose is precipitated with alcohol, washed and dried. Specification 637,133 is referred to. The Provisional Specifications also refer to the use of an organic liquid containing one or more hydroxyl groups and to cyclohexanol and its alkyl substitution products, ketones such as acetone and methyl ethyl ketone which may be regarded as enols, and, in the first Provisional Specification, to simple monohydric alcohols such as butanol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2786247A GB637134A (en) | 1947-10-17 | 1947-10-17 | Improvements in or relating to the manufacture of cellulose ethers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2786247A GB637134A (en) | 1947-10-17 | 1947-10-17 | Improvements in or relating to the manufacture of cellulose ethers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB637134A true GB637134A (en) | 1950-05-10 |
Family
ID=10266513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2786247A Expired GB637134A (en) | 1947-10-17 | 1947-10-17 | Improvements in or relating to the manufacture of cellulose ethers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB637134A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2680737A (en) * | 1951-05-17 | 1954-06-08 | Hercules Powder Co Ltd | Alkali cellulose preparation |
| US2680738A (en) * | 1952-04-11 | 1954-06-08 | Hercules Powder Co Ltd | Preparation of alkali cellulose |
-
1947
- 1947-10-17 GB GB2786247A patent/GB637134A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2680737A (en) * | 1951-05-17 | 1954-06-08 | Hercules Powder Co Ltd | Alkali cellulose preparation |
| US2680738A (en) * | 1952-04-11 | 1954-06-08 | Hercules Powder Co Ltd | Preparation of alkali cellulose |
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