GB487055A - Manufacture of stable colloidal dispersions of metals - Google Patents
Manufacture of stable colloidal dispersions of metalsInfo
- Publication number
- GB487055A GB487055A GB34277/36A GB3427736A GB487055A GB 487055 A GB487055 A GB 487055A GB 34277/36 A GB34277/36 A GB 34277/36A GB 3427736 A GB3427736 A GB 3427736A GB 487055 A GB487055 A GB 487055A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydroxy
- sodium
- ethyl
- aqueous solution
- methyl
- 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
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0004—Preparation of sols
- B01J13/0043—Preparation of sols containing elemental metal
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Colloid Chemistry (AREA)
Abstract
Colloidal dispersions of metals, particularly gold, silver and bismuth, are stabilized by the addition of a water-soluble oxy-alkyl cellulose or a derivative thereof and a water-soluble salt of lysalbinic acid or protalbinic acid or both. Suitable cellulose derivatives are hydroxy-methyl, hydroxy-ethyl or hydroxy-ethyl-methyl celluloses. According to an example, 2,75 c.c. of an aqueous solution of bismuth-ammonium citrate containing about 6 per cent of bismuth is stirred into a mixture of 25 c.c. of an aqueous solution of 0,1 per cent of sodium lysalbinate and 0,1 per cent of sodium protalbinate and 25 c.c. of an aqueous solution of hydroxy-ethyl-methyl-cellulose having a viscosity of 3. The solution is reduced at 50 DEG C., while bubbling nitrogen therethrough, by glucose, sodium hydrosulphite or formaldehyde. The dispersion is precipitated with alcohol and ether, and the precipitate dissolved in water. A sample has been furnished under Sect. 2 (5) of colloidal silver obtained by the reduction of silver nitrate with triethanolamine in aqueous solution in the presence of hydroxy-ethyl-methyl-cellulose and sodium lysalbinate and sodium protalbinate. The Specification as open to inspection under Sect. 91 describes the preparation of a dispersion of gold from gold chloride in a similar manner. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE487055X | 1935-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB487055A true GB487055A (en) | 1938-06-14 |
Family
ID=6543544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34277/36A Expired GB487055A (en) | 1935-12-18 | 1936-12-14 | Manufacture of stable colloidal dispersions of metals |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB487055A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004009205A2 (en) * | 2002-07-23 | 2004-01-29 | E.I. Du Pont De Nemours And Company | Nanoparticle fractionation and size determination |
-
1936
- 1936-12-14 GB GB34277/36A patent/GB487055A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004009205A2 (en) * | 2002-07-23 | 2004-01-29 | E.I. Du Pont De Nemours And Company | Nanoparticle fractionation and size determination |
| WO2004009205A3 (en) * | 2002-07-23 | 2005-05-12 | Du Pont | Nanoparticle fractionation and size determination |
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