GB421332A - Improvements in or relating to the plastication of cellulose esters or ethers - Google Patents
Improvements in or relating to the plastication of cellulose esters or ethersInfo
- Publication number
- GB421332A GB421332A GB34813/34A GB3481334A GB421332A GB 421332 A GB421332 A GB 421332A GB 34813/34 A GB34813/34 A GB 34813/34A GB 3481334 A GB3481334 A GB 3481334A GB 421332 A GB421332 A GB 421332A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose derivative
- plasticizer
- solvent
- substances
- added
- 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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0016—Plasticisers
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Moulding-powders are made by agitating a cellulose ester or ether and a plasticizer in suspension in an aqueous medium in the presence of a water-soluble swelling agent for the cellulose derivative, said swelling agent having a boiling point not substantially above 170 DEG C. Suitable swelling agents are alcohols and ketones such as acetone, cyclohexanol, and cyclohexanone. Preferably, the cellulose derivative is treated in finely divided form obtained by grinding or precipitation, and the amount of aqueous medium is large, e.g. of the order of 4--25 times the weight of the cellulose derivative. In a modification, the cellulose derivative is dissolved in a solvent, for example, acetone, and water is added until incipient precipitation takes place, whereupon the solvent is evaporated until the liquid has little or no solvent action for either the cellulose derivative or the plasticizer. The plasticizer is then added and the whole stirred. If the plasticizer is solid it may be added in molten condition. In all cases the mixture is agitated for some time, e.g. for 20 minutes to one hour, preferably at a temperature of 35 to 100 DEG C. Additions may be made of other substances such as natural or synthetic resins, stabilizers, dyes, lakes, pigments, filling substances such as silica gel and wood flour, and substances reducing inflammability. The product may be moulded into sheets, slabs, rods, tubes, or other articles. Specification 319,073, [Class 2 (ii)], is referred to.ALSO:Moulding-powders are made by agitating a cellulose ester or ether and a plasticizer in suspension in an aqueous medium in the presence of a water-soluble swelling agent for the cellulose derivative, said swelling agent having a boiling point not substantially above 170 DEG C. Suitable swelling agents are alcohols and ketones such as acetone, cyclohexanol, and cyclohexanone. Preferably, the cellulose derivative is treated in finely divided form obtained by grinding or precipitation, and the amount of aqueous medium is large, e.g. of the order of 4-25 times the weight of the cellulose derivative. In a modification, the cellulose derivative is dissolved in a solvent, e.g. acetone, and water is added until incipient precipitation takes place, whereupon the solvent is evaporated until the liquid has little or no solvent action for either the cellulose derivative or the plasticizer. The plasticizer is then added and the whole stirred. If the plasticizer is solid it may be added in molten condition. In all cases the mixture is agitated for some time, e.g. for 20 minutes to one hour, preferably at a temperature of 35 to 100 DEG C. Additions may be made of other substances such as natural or synthetic resins, stabilizers, dyes, lakes, pigments, filling substances such as silica gel and wood flour, and substances reducing inflammability. The product may be moulded into sheets, slabs, rods, tubes, or other articles. Specification 319,073, [Class 70], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US421332XA | 1932-04-13 | 1932-04-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB421332A true GB421332A (en) | 1934-12-13 |
Family
ID=21920215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34813/34A Expired GB421332A (en) | 1932-04-13 | 1933-04-13 | Improvements in or relating to the plastication of cellulose esters or ethers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB421332A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE898680C (en) * | 1940-07-21 | 1953-12-03 | Kurt Dr Bratring | Method and device for the production of molding and injection molding compounds |
-
1933
- 1933-04-13 GB GB34813/34A patent/GB421332A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE898680C (en) * | 1940-07-21 | 1953-12-03 | Kurt Dr Bratring | Method and device for the production of molding and injection molding compounds |
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