JPS55158319A - Production of cellulose diacetate with high resistance to the loss of clarity caused by hot water - Google Patents
Production of cellulose diacetate with high resistance to the loss of clarity caused by hot waterInfo
- Publication number
- JPS55158319A JPS55158319A JP6360379A JP6360379A JPS55158319A JP S55158319 A JPS55158319 A JP S55158319A JP 6360379 A JP6360379 A JP 6360379A JP 6360379 A JP6360379 A JP 6360379A JP S55158319 A JPS55158319 A JP S55158319A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- cellulose
- product
- washed
- loss
- 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.)
- Pending
Links
Abstract
PURPOSE: After an acetylated cellulose is washed and dipped in a hot water of a temperature in a specific range for a specified period of time, the cellulose acetate is formed to give title product having high resistance to the loss of clarity caused by hot water and showing silky touch and luster not subject to hot water treatment.
CONSTITUTION: The starting material of cellulose such as beaten wood pulp is subjected to the pretreatment for activation and acetylation with acetic acid in the presence of sulfuric acid as a catalyst. The reaction mixture is aged, neutralized, precipitated in accordance with a known method to prepare cellulose diacetate. The product is washed, dipped in hot water at 110W180°C using an autoclave for 5W60min, then washed with cool water and dried. The resultant cellulose acetate is formed to give the objective formed product.
EFFECT: The treatment of the cellulose diacetate with hot water can remove water- soluble magnesium salts and cellulose acetates of low acetylation degree and polymerization degree to increase the performance of the product.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6360379A JPS55158319A (en) | 1979-05-22 | 1979-05-22 | Production of cellulose diacetate with high resistance to the loss of clarity caused by hot water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6360379A JPS55158319A (en) | 1979-05-22 | 1979-05-22 | Production of cellulose diacetate with high resistance to the loss of clarity caused by hot water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55158319A true JPS55158319A (en) | 1980-12-09 |
Family
ID=13234015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6360379A Pending JPS55158319A (en) | 1979-05-22 | 1979-05-22 | Production of cellulose diacetate with high resistance to the loss of clarity caused by hot water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55158319A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106283242A (en) * | 2015-06-01 | 2017-01-04 | 中国纺织科学研究院 | A kind of activation method of cellulose pulp |
-
1979
- 1979-05-22 JP JP6360379A patent/JPS55158319A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106283242A (en) * | 2015-06-01 | 2017-01-04 | 中国纺织科学研究院 | A kind of activation method of cellulose pulp |
| CN106283242B (en) * | 2015-06-01 | 2019-01-08 | 中国纺织科学研究院 | A kind of activation method of cellulose pulp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4269972A (en) | Process for producing cellulose diacetate having improved resistance to delustering phenomenon in hot water | |
| JPS55158319A (en) | Production of cellulose diacetate with high resistance to the loss of clarity caused by hot water | |
| US3679646A (en) | Preparation of polyvinyl alcohol having improved color properties by treating the polyvinyl ester with an alkali metal borohydride | |
| US2028761A (en) | Method of treating cellulose esters of organic acids | |
| JPH02311501A (en) | Method for grinding cellulose sheet and production of cellulose acetate therefrom | |
| US2459927A (en) | Process of manufacturing regenerated cellulose sheet material | |
| JPS58441B2 (en) | How to produce chitosan | |
| US2370126A (en) | Process of making polyvinyl acetals | |
| US2329704A (en) | Ripened cellulose esters | |
| US2048685A (en) | Process of making cellulose esters and the products resulting therefrom | |
| US2470192A (en) | Rapid ripening of cellulose esters | |
| SU726103A1 (en) | Method of preparing cellulose secondary acetate | |
| SU1155450A1 (en) | Method of modifying wood | |
| US1897869A (en) | Process for making cellulose nitro-acetate | |
| SU1553535A1 (en) | Method of producing cellulose acetate | |
| US1999406A (en) | Method of preparing stable cellulose acetate | |
| US2512983A (en) | Mixed cellulose esters and process of making same | |
| US1613451A (en) | Process of making acylated cellulose ethers | |
| SU1599376A1 (en) | Method of producing cellulose acetate | |
| US2508013A (en) | Preparation of secondary cellulose esters | |
| SU1553536A1 (en) | Method of producing cellulose acetate | |
| SU923503A1 (en) | Method of preparing agar-like products from sea red algae | |
| Akishima et al. | Structural changes of amorphous cellulose by acid pulping treatments | |
| US1857183A (en) | Treatment of cellulose preparatory to esterification | |
| GB527565A (en) | A direct process for producing acetyl cellulose soluble in various organic solvents |