JPS55108401A - Production of low-viscosity carboxymethylethylcellulose - Google Patents
Production of low-viscosity carboxymethylethylcelluloseInfo
- Publication number
- JPS55108401A JPS55108401A JP1548779A JP1548779A JPS55108401A JP S55108401 A JPS55108401 A JP S55108401A JP 1548779 A JP1548779 A JP 1548779A JP 1548779 A JP1548779 A JP 1548779A JP S55108401 A JPS55108401 A JP S55108401A
- Authority
- JP
- Japan
- Prior art keywords
- carboxymethylethylcellulose
- viscosity
- low
- production
- heat
- 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.)
- Granted
Links
- 239000000243 solution Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
Landscapes
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
PURPOSE: To produce a high-grade, low-viscosity carboxymethylethylcellulose having excellent whiteness and transparency, by dissolving a high-viscosity carboxymethylethylcellulose in an aqueous solution of a lower alkanol and heat-treating the solution together with H2O2.
CONSTITUTION: A high-viscosity carboxymethylethylcellulose (5W50wt%) is dissolved in a mixture of a 1W4C lower alkanol and water in a weight ratio of 95:5W 70:30 and, then H2O2 is added thereto in an amount of 0.1W50wt%, pref. 1W 30wt%, based on the weight of dried carboxymethylethylcellulose. The resulting solution is subjected to heat-treatment at a temperature between 60°C and the boiling temperature of the system, whereby the depolymerization of the high-viscosity carboxymethylethylcellulose is effected. The low-viscosity carboxymethylethylcellulose thus obtained, which is insoluble in water, is precipitated by removing the alkanol.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1548779A JPS5941643B2 (en) | 1979-02-15 | 1979-02-15 | Method for producing low viscosity carboxymethylethyl cellulose |
| US06/067,667 US4250305A (en) | 1978-09-01 | 1979-08-20 | Process for preparing cellulose ether |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1548779A JPS5941643B2 (en) | 1979-02-15 | 1979-02-15 | Method for producing low viscosity carboxymethylethyl cellulose |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55108401A true JPS55108401A (en) | 1980-08-20 |
| JPS5941643B2 JPS5941643B2 (en) | 1984-10-08 |
Family
ID=11890144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1548779A Expired JPS5941643B2 (en) | 1978-09-01 | 1979-02-15 | Method for producing low viscosity carboxymethylethyl cellulose |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5941643B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002531593A (en) * | 1998-11-27 | 2002-09-24 | ヴオルフ・ヴアルスロデ・アクチエンゲゼルシヤフト | Method for producing low viscosity water-soluble cellulose ether |
| JP2010235681A (en) * | 2009-03-30 | 2010-10-21 | Nippon Paper Industries Co Ltd | Method for manufacturing cellulose nano-fiber |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60149847U (en) * | 1984-03-16 | 1985-10-04 | トヨタ自動車株式会社 | cylinder block |
-
1979
- 1979-02-15 JP JP1548779A patent/JPS5941643B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002531593A (en) * | 1998-11-27 | 2002-09-24 | ヴオルフ・ヴアルスロデ・アクチエンゲゼルシヤフト | Method for producing low viscosity water-soluble cellulose ether |
| JP2010235681A (en) * | 2009-03-30 | 2010-10-21 | Nippon Paper Industries Co Ltd | Method for manufacturing cellulose nano-fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5941643B2 (en) | 1984-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5297394A (en) | Removal of organic matter in phosphoric acid | |
| JPS55108401A (en) | Production of low-viscosity carboxymethylethylcellulose | |
| JPS5773029A (en) | Resin colorant | |
| JPS5236605A (en) | Process for recovery of unreacted vinyl chloride | |
| JPS56143257A (en) | Reactive dye composition and dyeing method employing the same | |
| JPS5583723A (en) | Recovery of resorcinol | |
| JPS5271433A (en) | Preparation of aromatic polycarboxylic acid arylester | |
| JPS52134888A (en) | Method of sulfuryl chlorination | |
| JPS5225897A (en) | Process for producing polyesters | |
| JPS54145389A (en) | Metatitanic acid-containing anion adsorbent and preparation thereof | |
| JPS5738312A (en) | Manufacture of hydrazine | |
| JPS54130621A (en) | Preparation of beta-quinacridone pigment | |
| JPS55125101A (en) | Preparation of graft-modified starch | |
| JPS55125173A (en) | Release agent and production thereof | |
| JPS54110252A (en) | Granular rubber composition and its preparation | |
| JPS5623891A (en) | Stabilization of urokinaze by heating | |
| JPS55150857A (en) | Preparation of gluten paste | |
| JPS5562809A (en) | Purifying method of sodium aluminate solution | |
| JPS55137132A (en) | Polyimide | |
| JPS53226A (en) | Method of stable extraction and isolation of carthamin | |
| JPS56140109A (en) | Refining of wild silk yarn | |
| JPS5250992A (en) | Equipment and process for producing sulfuric acid | |
| JPS542311A (en) | Preparation of crystals | |
| JPS5366941A (en) | Preparation of anthroquinone dispersion dyes | |
| JPS5244592A (en) | Alarm equipment |