US801430A - Process for manufacturing white-lead color. - Google Patents
Process for manufacturing white-lead color. Download PDFInfo
- Publication number
- US801430A US801430A US23076904A US1904230769A US801430A US 801430 A US801430 A US 801430A US 23076904 A US23076904 A US 23076904A US 1904230769 A US1904230769 A US 1904230769A US 801430 A US801430 A US 801430A
- Authority
- US
- United States
- Prior art keywords
- lead
- white
- color
- carbonate
- manufacturing white
- 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 - Lifetime
Links
- 229910000004 White lead Inorganic materials 0.000 title description 8
- 238000000034 method Methods 0.000 title description 6
- RYZCLUQMCYZBJQ-UHFFFAOYSA-H lead(2+);dicarbonate;dihydroxide Chemical compound [OH-].[OH-].[Pb+2].[Pb+2].[Pb+2].[O-]C([O-])=O.[O-]C([O-])=O RYZCLUQMCYZBJQ-UHFFFAOYSA-H 0.000 title description 4
- 238000004519 manufacturing process Methods 0.000 title description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 8
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 230000007935 neutral effect Effects 0.000 description 5
- PNZVFASWDSMJER-UHFFFAOYSA-N acetic acid;lead Chemical compound [Pb].CC(O)=O PNZVFASWDSMJER-UHFFFAOYSA-N 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003637 basic solution Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- HTUMBQDCCIXGCV-UHFFFAOYSA-N lead oxide Chemical compound [O-2].[Pb+2] HTUMBQDCCIXGCV-UHFFFAOYSA-N 0.000 description 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N lead(II) oxide Inorganic materials [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/14—Compounds of lead
- C09C1/16—White lead
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G21/00—Compounds of lead
- C01G21/14—Carbonates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
Definitions
- My invention relates to a process for manufacturing white-lead color, and more especially a kind of precipitated white lead, as precipitated out of solution of lead salts.
- basic solutions of lead have been hitherto used as starting materialas, for instance, obtained by dissolving litharge in neutral acetate of lead.
- carbonate of lead can be precipitated by introducing for a longer time carbonic acid into neutral acetate of lead, (solution of sugar of lead.)
- the product obtained thereby is, however, crystalline and does not possess any covering power at all.
- an excellently covering white color can be obtained by introducing carbonic acid into neutral sugar of lead, thereby obtaining a product far superior with regard to quality and covering power to the white lead hitherto known.
- Thenewfeatureofmyprocess consists therein that the carbonic acid is introduced into the neutral solution of sugar of lead under pressure. A diluting of the solutions increases in this process the yield.
- the composition of the new lead color is about that of the normal carbonate of lead.
- the ordinary white lead which is regarded to be two-thirds carbonate of lead, contains theoretically 11.36 per cent. of carbonic acid, and the normal carbonate of lead contains, according to the theory, 16.49 per cent. of carbonic acid.
- the new precipitated white lead according to my invention has an average of about 16.05 per cent. of carbonic acid.
- a solution of sugar of lead containing ten to fifteen per cent. of acetate of lead is used, and the precipitation takes place the best at an air temperature of 10 to 20 Celsius.
- the precipitating-receptacle With respect to the construction of the precipitating-receptacle, it can be provided with a stirring work or not.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Color Printing (AREA)
Description
UNITED STATES PATENT orrioE.
ADOLF WULTZE, OF OHARLOTTENBURG, NEAR BERLIN, GERMANY.
PROCESS FOR MANUFACTURING WHITE-LEAD COLOR.
Specification of Letters Patent.
Patented Oct. 10, 1905.
Application filed October 31, 1904:. Serial No. 230,769.
- specification.
My invention relates to a process for manufacturing white-lead color, and more especially a kind of precipitated white lead, as precipitated out of solution of lead salts. For this purpose basic solutions of lead have been hitherto used as starting materialas, for instance, obtained by dissolving litharge in neutral acetate of lead. It is also known that carbonate of lead can be precipitated by introducing for a longer time carbonic acid into neutral acetate of lead, (solution of sugar of lead.) The product obtained thereby is, however, crystalline and does not possess any covering power at all. Now I have found out that an excellently covering white color can be obtained by introducing carbonic acid into neutral sugar of lead, thereby obtaining a product far superior with regard to quality and covering power to the white lead hitherto known. Thenewfeatureofmyprocessconsists therein that the carbonic acid is introduced into the neutral solution of sugar of lead under pressure. A diluting of the solutions increases in this process the yield. The composition of the new lead color is about that of the normal carbonate of lead. The ordinary white lead, which is regarded to be two-thirds carbonate of lead, contains theoretically 11.36 per cent. of carbonic acid, and the normal carbonate of lead contains, according to the theory, 16.49 per cent. of carbonic acid. The new precipitated white lead according to my invention, however, has an average of about 16.05 per cent. of carbonic acid.
A solution of sugar of lead containing ten to fifteen per cent. of acetate of lead is used, and the precipitation takes place the best at an air temperature of 10 to 20 Celsius.
During the process a small increasing of the temperature results at the introduction of carbonic acid, the pressure, being about one atmosphere, shall be very suddenly produced in the precipitating-receptacle. The end reaction can be seen from the fact that scum flows out of the safety-valve of the precipitating-receptaclethat is to say, that a further precipitation of carbonate of lead does not take place. lVhen a solution of acetate of lead having ten per cent. of acetate of lead is used, seven per cent. of carbonate of lead is precipitated, while the rest of three per cent. is used again afterward. When more than fifteen per cent. of acetate of lead is contained in a solution, the carbonate of lead is considerably heavier, and when the concentration is further increased the carbonate of lead becomes crystalline. With respect to the construction of the precipitating-receptacle, it can be provided with a stirring work or not.
Having thus fully described the nature of my invention, what I desire to secure by Letters Patent of the United States is Process for manufacturing white-lead color, consisting in treating aqueous solutions of neutral acetate of lead With carbonic acid under pressure.
In witness whereof I have hereunto set my hand in the presence of two witnesses.
ADOLF WULTZE.
Witnesses:
HENRY HAsPER, WOLDEMAR HAUPT. 7
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US23076904A US801430A (en) | 1904-10-31 | 1904-10-31 | Process for manufacturing white-lead color. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US23076904A US801430A (en) | 1904-10-31 | 1904-10-31 | Process for manufacturing white-lead color. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US801430A true US801430A (en) | 1905-10-10 |
Family
ID=2869916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US23076904A Expired - Lifetime US801430A (en) | 1904-10-31 | 1904-10-31 | Process for manufacturing white-lead color. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US801430A (en) |
-
1904
- 1904-10-31 US US23076904A patent/US801430A/en not_active Expired - Lifetime
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