GB651434A - Improvements in or relating to the production of regenerated cellulose sheet wrapping materials - Google Patents
Improvements in or relating to the production of regenerated cellulose sheet wrapping materialsInfo
- Publication number
- GB651434A GB651434A GB14510/48A GB1451048A GB651434A GB 651434 A GB651434 A GB 651434A GB 14510/48 A GB14510/48 A GB 14510/48A GB 1451048 A GB1451048 A GB 1451048A GB 651434 A GB651434 A GB 651434A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- sheet
- softening agent
- regenerated cellulose
- orthophthalate
- 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
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/06—Coating with compositions not containing macromolecular substances
- C08J7/065—Low-molecular-weight organic substances, e.g. absorption of additives in the surface of the article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/02—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in air or gases by adding vapour phase inhibitors
-
- 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
- C08J2301/22—Cellulose xanthate
- C08J2301/24—Viscose
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Sheet wrapping material, suitable for the wrapping of ferrous metal articles, comprises flexible regenerated cellulose sheet or film wherein there is incorporated a corrosion-restraining organic compound comprising a water - soluble orthophthalate having the formula C6H4(COOR1)2 or C6H4(COO)2R11, wherein R1 represents an atom of an alkali metal or the ammonium group (NH4), and R11 represents an atom of an alkaline earth metal or of magnesium. The corrosion inhibitor may be disodium orthophthalate or magnesium orthophthalate. Dipotassium, diammonium, and calcium orthophthalates are said to be less satisfactory. The proportion of orthophthalate should preferably be at least 0.5 per cent, e.g. 4-8 per cent (optimum about 5 per cent) based on the combined weights of cellulose and any softening agent which may be present. The softening agent may be glycerine (e.g. 10-25 per cent by weight or more based on the combined weights of cellulose and glycerine). Urea, sometimes employed as a softening agent of regenerated cellulose, is said to promote corrosion and hence to be unsatisfactory. The corrosion inhibitor may be introduced into the sheet after the latter has been formed by impregnating the sheet with an aqueous solution containing at least about 0.17 per cent of the inhibitor. The solution may also contain a softening agent. The regenerated cellulose sheet is preferably impregnated while in the gel state. Alternatively, the inhibitor may be introduced into the sheet by spraying the latter, after the application of the softening agent, with a fine spray of an aqueous solution of the inhibitor. In an example dried softened regenerated cellulose film is freed from softening agent by soaking in water, and the wet film is impregnated by immersion for 30 seconds at 60 DEG C. in an aqueous solution containing 6.0 per cent of glycerine and 4.0 per cent of disodium orthophthalate. The film is then transferred to a polished plate, excess liquid removed from the surface by means of a rubber squeegee, and the film dried in a current of warm air. Comparative rusting tests are described using as test pieces polished mild steel plates wrapped in regenerated cellulose films with and without orthophthalates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB14510/48A GB651434A (en) | 1948-05-28 | 1948-05-28 | Improvements in or relating to the production of regenerated cellulose sheet wrapping materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB14510/48A GB651434A (en) | 1948-05-28 | 1948-05-28 | Improvements in or relating to the production of regenerated cellulose sheet wrapping materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB651434A true GB651434A (en) | 1951-04-04 |
Family
ID=10042497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14510/48A Expired GB651434A (en) | 1948-05-28 | 1948-05-28 | Improvements in or relating to the production of regenerated cellulose sheet wrapping materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB651434A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1278806B (en) * | 1958-04-14 | 1968-09-26 | Daubert Chemical Co | Multi-layer packaging material based on plastic with corrosion protection for metal objects acting in the vapor phase |
-
1948
- 1948-05-28 GB GB14510/48A patent/GB651434A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1278806B (en) * | 1958-04-14 | 1968-09-26 | Daubert Chemical Co | Multi-layer packaging material based on plastic with corrosion protection for metal objects acting in the vapor phase |
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