DE487646C - Process for the preparation of a compound containing colloidal silver chloride, easily soluble in water, electrolyte-free compound - Google Patents
Process for the preparation of a compound containing colloidal silver chloride, easily soluble in water, electrolyte-free compoundInfo
- Publication number
- DE487646C DE487646C DEI31899D DEI0031899D DE487646C DE 487646 C DE487646 C DE 487646C DE I31899 D DEI31899 D DE I31899D DE I0031899 D DEI0031899 D DE I0031899D DE 487646 C DE487646 C DE 487646C
- Authority
- DE
- Germany
- Prior art keywords
- water
- electrolyte
- preparation
- silver chloride
- colloidal silver
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
Description
Verfahren zur Darstellung einer kolloidales Silberchlorid enthaltenden, leicht in Wasser löslichen, elektrolytfreien Verbindung Schon von Lottermoser und E. v. M e y e r (vgl. Journal für praktische Chemie N. F. 56 (2), S.247 und 57, S. 543) sind Lösungen von Silberhalogeniden erhalten worden, und zwar durch Behandeln verdünnter Lösungen von kolloidalem Silber mit freiem Halogen. Diese Lösungen sind aber sehr elektrolytenempfindlich; beim Zusatz von Mineralsäure werden sie irreversibel gefällt.Process for the preparation of a colloidal silver chloride containing, Electrolyte-free compound readily soluble in water Already from Lottermoser and E. v. M e y e r (see Journal for Practical Chemistry N.F. 56 (2), p.247 and 57, P. 543) solutions of silver halides have been obtained by treatment dilute solutions of colloidal silver with free halogen. These solutions are but very sensitive to electrolytes; when mineral acid is added, they become irreversible pleases.
Nach dem Verfahren der Patentschrift 103 4o6 kann man diese Fällung reversibel machen, wenn man einer nach L o t t e r -in o s. e r und M e y e r erhaltenen kolloidalen Silberhalogenidlösung Gelatine zusetzt und dann diese Lösung mit einer solchen von Ammoniumcitrat oder anderen Ammonium-oder Alkalisalzen fällt.This precipitation can be carried out using the process described in Patent Specification 103 406 Make it reversible if you get one after L o t t e r -in o s. e r and M e y e r colloidal silver halide solution added gelatin and then this solution with a those of ammonium citrate or other ammonium or alkali salts.
P a a 1 und V o s s (vgl. Ber. 37 [19o41, S.3862) erhielten festes, wasserlösliches, kolloidales Silberchlorid, indem sie zu einer mit Lysalbinsäure geschützten kolloidalen SilberoY_vdlösung Natriumchloridlösung zugaben.P a a 1 and V o s s (cf. Ber. 37 [19o41, p.3862) received solid, water-soluble, colloidal silver chloride by being made into one with lysalbinic acid add sodium chloride solution to protected colloidal SilberoY_vdlösung.
Es wurde nun gefunden, daß man bequem zu festen, kolloidales Silberchlorid enthaltenden Verbindungen, die sehr leicht wasserlöslich und sehr haltbar sind, gelangen kann, wenn man in eine Silbereiweißlösung Chlor einleitet, dabei die Lösung durch laufenden Zusatz geringer Mengen Alkali neutral hält, die entstandene Lösung dann dialysiert und vorsichtig zur Trockene bringt. Das so erhaltene bräunliche Pulver löst sich sehr leicht mit neutraler Reaktion in Wasser. Die wäßrige Lösung, die außerordentlich haltbar ist, sieht in dünner Schicht im durchfallenden Lichte leuchtend klar braun, im auffallenden Lichte grau opaleszierend aus. Mit Mineralsäure wird die Silberchlorid-Albumose-Verbindung gefällt; diese Fällung löst sich aber mit etwas Alkali leicht wieder zu der wie vorher neutralen Flüssigkeit auf. Durch Natriumchloridlösung und Natronlauge tritt keine Fällung ein.It has now been found that solid, colloidal silver chloride can be conveniently obtained containing compounds that are very easily soluble in water and very durable, can reach if one introduces chlorine into a silver protein solution, thereby the solution keeps the resulting solution neutral by continuously adding small amounts of alkali then dialyzed and carefully brought to dryness. The brownish one obtained in this way Powder dissolves very easily in water with a neutral reaction. The aqueous solution, which is extraordinarily durable, looks in a thin layer in the transmitted light bright clear brown, gray opalescent in the conspicuous light. With mineral acid the silver chloride-albumose compound is precipitated; but this precipitation dissolves with a little alkali it can easily be restored to the neutral liquid as before. By Sodium chloride solution and sodium hydroxide solution do not precipitate.
Das Produkt soll für pharmazeutische Zwecke Verwendung finden. Beispiel ro Gewichtsteile einer Silberproteinverbindung (s. Patentschrift 105 866) werden in Zoo Gewichtsteilen Wasser gelöst. In diese Lösung leitet man bei gewöhnlicher Temperatur unter Rühren etwa eine Stunde lang langsam Chlor ein und hält die Lösung durch Zusatz geringer Mengen verdünnter Natronlauge neutral. Diese Lösung wird dann so lange gegen Wasser dialysiert, bis dieses mit Silbernitrat keine Chlorreaktion mehr gilt, und dann durch Vakuumdestillation .(nicht über 4o°) zur Trockene gebracht.The product is intended to be used for pharmaceutical purposes. example ro parts by weight of a silver protein compound (see patent specification 105 866) dissolved in zoo parts by weight of water. One leads into this solution with usual Temperature with stirring for about an hour slowly chlorine and keeps the solution by adding small amounts of dilute caustic soda neutral. These Solution is then dialyzed against water until it does not contain silver nitrate Chlorine reaction is longer valid, and then by vacuum distillation (not above 40 °) for Brought dry.
Das so erhaltene bräunliche Pulver zeigt die oben angeführten Eigenschaften, es enthält etwa 7,5 °/o Silber und etwa 2,5 '/",Chlor. Die Ausbeute beträgt ungefähr ro Gewichtsteile.The brownish powder obtained in this way shows the properties mentioned above, it contains about 7.5 % silver and about 2.5% chlorine. The yield is about ro parts by weight.
Claims (1)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL21093D NL21093C (en) | 1926-09-24 | ||
| GB23577/26A GB281803A (en) | 1926-09-24 | 1926-09-24 | Improvements in and in connection with sheets, pellicles, or films of cellulose esters and ethers, and the manufacture thereof |
| US163540A US1666377A (en) | 1926-09-24 | 1927-01-25 | Cellulose-derivative film and method of making the same |
| FR628108D FR628108A (en) | 1926-09-24 | 1927-01-26 | Improvements to compositions of cellulose esters or cellulose ethers in the form of sheets, films and films |
| DEI31899D DE487646C (en) | 1926-09-24 | 1927-08-10 | Process for the preparation of a compound containing colloidal silver chloride, easily soluble in water, electrolyte-free compound |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB628108X | 1926-09-24 | ||
| DEI31899D DE487646C (en) | 1926-09-24 | 1927-08-10 | Process for the preparation of a compound containing colloidal silver chloride, easily soluble in water, electrolyte-free compound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE487646C true DE487646C (en) | 1930-01-18 |
Family
ID=25981435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEI31899D Expired DE487646C (en) | 1926-09-24 | 1927-08-10 | Process for the preparation of a compound containing colloidal silver chloride, easily soluble in water, electrolyte-free compound |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE487646C (en) |
| NL (1) | NL21093C (en) |
-
0
- NL NL21093D patent/NL21093C/xx active
-
1927
- 1927-08-10 DE DEI31899D patent/DE487646C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL21093C (en) | 1900-01-01 |
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