GB421115A - Improvements in or relating to the production of cellulose ester or ether moulding powders - Google Patents
Improvements in or relating to the production of cellulose ester or ether moulding powdersInfo
- Publication number
- GB421115A GB421115A GB11201/33A GB1120133A GB421115A GB 421115 A GB421115 A GB 421115A GB 11201/33 A GB11201/33 A GB 11201/33A GB 1120133 A GB1120133 A GB 1120133A GB 421115 A GB421115 A GB 421115A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cellulose
- plasticizer
- cellulose derivative
- xylene
- esters
- 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 without grinding and in the presence of a wetting or a dispersing agent, for example, turkey red oil, the substance having the Registered Trade Mark "Monopol" oil, sulphonated pine oil, or soap. Water-insoluble swelling agents for the cellulose derivative, such as aliphatic, cyclic, or aromatic hydrocarbons, e.g. benzene, toluene, xylene, pine oil, or the substance having the Registered Trade Mark "Tetralin," or watersoluble swelling agents, such as alcohols and ketones, e.g. acetone, cyclohexanol, or cyclohexanone, may also be present. The cellulose derivative is preferably treated in the form of a fine uniform powder. Suitable combinations of dispersing agents and swelling agents are turkey red oil with "Tetralin" and sodium silicate, or with xylene, or "Tetralin," cyclohexanol, and soap. The amount of dispersing or wetting agent, or mixture thereof with swelling agent should be small, e.g. 0,5-5 per cent of the weight of cellulose derivative, and the amount of swelling agent should not be so great as to give a mixture with any substantial solvent action of the cellulose derivative and plasticizer. The amount of aqueous medium is preferably large, e.g. 4-25 times the weight of the cellulose derivative. The latter may be agitated for some time with the other components before adding the plasticizer. Thus, powdered cellulose acetate is stirred with 20 times its weight of water containing a mixture of turkey red oil and xylene equal to 1 per cent of the cellulose acetate for 1 hour, and xylene monomethyl sulphonamide added with vigorous stirring which is continued for some time. Absorption of the plasticizer may take place at raised temperatures, e.g. 35-100 DEG C. After absorption and removal of the liquid, the powder may be washed and any residual volatile matter removed. The cellulose derivative may be added to an aqueous dispersion or colloidal solution of the plasticizer and dispersing or other agents. The plasticizers may be aromatic sulphonamides, sulphonanilides or other sulphonarylides, phthalate plasticizers, tartrate esters, aromatic phosphates, triacetin, diphenylol propane or other phenol-ketone condensation products, tertiary butyl phenols, or camphor. They may be present from less than 10 per cent up to say 100 per cent by weight of the cellulose derivative. Resins, stabilizers such as urea or its derivatives, dyes, lakes, pigments and effect materials, and fillers such as silica gel or wood flour may be incorporated at any stage. Non-inflammators such as mineral phosphates, halogenated phenols and aromatic amines and their acidyl derivatives, especially the brominated acidylated amines of Specification 319,073, [Class 2 (ii)], may be added. Such halogenated compounds may themselves be the sole plasticizers. Substances combining with halogen such as dicyandiamide may be incorporated. Cellulose esters and ethers referred to include esters such as cellulose laurate and naphthenate, cellulose acetonitrate, or mixed ethers or ether-esters. According to an example, 100 parts of powdered acetone-soluble cellulose acetate are stirred with 1800 parts of water, and 0,5 parts each of turkey red oil and xylene added. The mixture is stirred for 1 hour, 50 parts dimethyl phthalate and 10 parts triphenyl phosphate added, the batch heated to 60 DEG C., stirred for 20-60 minutes, allowed to settle, and the powder separated and dried. The Specification as open to inspection under Sect. 91 comprises also the use of swelling agents alone for facilitating incorporation of the plasticizer in the cellulose derivative, and is not restricted to the use of an aqueous medium but to any medium having little or no solvent action on the cellulose derivative and plasticizer. Other plasticizable substances such as synthetic resins, polymerized vinyl esters or other vinyl compounds may be used in place of cellulose derivatives, and the invention is not restricted to the production of moulding powders. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US421115XA | 1932-04-13 | 1932-04-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB421115A true GB421115A (en) | 1934-12-13 |
Family
ID=21920110
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11201/33A Expired GB421115A (en) | 1932-04-13 | 1933-04-13 | Improvements in or relating to the production of cellulose ester or ether moulding powders |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB421115A (en) |
Cited By (2)
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 |
US2764498A (en) * | 1949-03-31 | 1956-09-25 | Diamond Claude | Process of plasticizing thermoplastic cellulose esters and ethers with an organic plasticizer dispersed in aqueous medium with a cationic surface active agent |
-
1933
- 1933-04-13 GB GB11201/33A patent/GB421115A/en not_active Expired
Cited By (2)
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 |
US2764498A (en) * | 1949-03-31 | 1956-09-25 | Diamond Claude | Process of plasticizing thermoplastic cellulose esters and ethers with an organic plasticizer dispersed in aqueous medium with a cationic surface active agent |
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