FR2287468A1 - Gelled cellulose triacetate - packaging material or intermediary for films and fibres - Google Patents
Gelled cellulose triacetate - packaging material or intermediary for films and fibresInfo
- Publication number
- FR2287468A1 FR2287468A1 FR7434241A FR7434241A FR2287468A1 FR 2287468 A1 FR2287468 A1 FR 2287468A1 FR 7434241 A FR7434241 A FR 7434241A FR 7434241 A FR7434241 A FR 7434241A FR 2287468 A1 FR2287468 A1 FR 2287468A1
- Authority
- FR
- France
- Prior art keywords
- solvent
- cellulose triacetate
- liq
- prod
- cta
- 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
- 229920002284 Cellulose triacetate Polymers 0.000 title abstract 6
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 title abstract 6
- 239000005022 packaging material Substances 0.000 title 1
- 239000002904 solvent Substances 0.000 abstract 5
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 abstract 4
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 abstract 2
- 235000019253 formic acid Nutrition 0.000 abstract 2
- 229920000642 polymer Polymers 0.000 abstract 2
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 abstract 1
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 150000001735 carboxylic acids Chemical class 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 230000003301 hydrolyzing effect Effects 0.000 abstract 1
- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 abstract 1
- 229940100630 metacresol Drugs 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/08—Polysaccharides
- B01D71/12—Cellulose derivatives
- B01D71/14—Esters of organic acids
- B01D71/16—Cellulose acetate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/08—Cellulose derivatives
- C08L1/10—Esters of organic acids, i.e. acylates
- C08L1/12—Cellulose acetate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/08—Cellulose derivatives
- C08J2301/10—Esters of organic acids
- C08J2301/12—Cellulose acetate
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
A process for prepg. gelled cellulose triacetate (GCTA) comprises (a) dissolving 4-25 wt.% cellulose triacetate (CTA) (acetyl content >42 wt.%) in 75-96 wt.% non-hydrolysing acidic solvent, e.g. a carboxylic acid pref. formic acid of acidity equal to or greater than meta cresol. (b) forming the polymer soln (viscosity 102-106 centipoises) into the configuration of the prod. (c) bringing the formed prod. into contact with excess of a volatile or non-volatile gelling liq. (GL) at a low temp. until the solvent is substantially replaced by it. The GL is a non-solvent for CTA but miscible with the CTA solvent, e.g. water at temp. below 35 degrees C pref. 0-30 degrees C with solvent formic acid, (d) recovering the gelled prod. which is ultra microporous having distinct interpenetrating polymer and liq. phases, in fibre or film form. The liq. phase can be evapd. off, or remain or be replaced with other liqs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7434241A FR2287468A1 (en) | 1974-10-11 | 1974-10-11 | Gelled cellulose triacetate - packaging material or intermediary for films and fibres |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7434241A FR2287468A1 (en) | 1974-10-11 | 1974-10-11 | Gelled cellulose triacetate - packaging material or intermediary for films and fibres |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2287468A1 true FR2287468A1 (en) | 1976-05-07 |
| FR2287468B1 FR2287468B1 (en) | 1979-06-15 |
Family
ID=9143993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7434241A Granted FR2287468A1 (en) | 1974-10-11 | 1974-10-11 | Gelled cellulose triacetate - packaging material or intermediary for films and fibres |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2287468A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0047064A1 (en) * | 1980-08-21 | 1982-03-10 | Chisso Corporation | Process for preparing porous, spherical cellulose particles |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2926104A (en) * | 1955-06-27 | 1960-02-23 | Goetz Alexander | Method of making microporous filter film |
-
1974
- 1974-10-11 FR FR7434241A patent/FR2287468A1/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2926104A (en) * | 1955-06-27 | 1960-02-23 | Goetz Alexander | Method of making microporous filter film |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0047064A1 (en) * | 1980-08-21 | 1982-03-10 | Chisso Corporation | Process for preparing porous, spherical cellulose particles |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2287468B1 (en) | 1979-06-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TP | Transmission of property | ||
| ST | Notification of lapse |