GB606751A - Improvements in or relating to a method of increasing the specular reflectivity of metal flakes - Google Patents
Improvements in or relating to a method of increasing the specular reflectivity of metal flakesInfo
- Publication number
- GB606751A GB606751A GB782246A GB782246A GB606751A GB 606751 A GB606751 A GB 606751A GB 782246 A GB782246 A GB 782246A GB 782246 A GB782246 A GB 782246A GB 606751 A GB606751 A GB 606751A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mass
- metal
- flakes
- per cent
- leafing
- 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
- 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
- C09C1/62—Metallic pigments or fillers
- C09C1/622—Comminution, shaping or abrasion of initially uncoated particles, possibly in presence of grinding aids, abrasives or chemical treating or coating agents; Particle solidification from melted or vaporised metal; Classification
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
A method of increasing the specular reflectivity of metal flakes comprises providing a uniform dispersion of ball-milled leafing metal flakes in a paint thinner, the proportion of metal in the mass being such that the mass is relatively dry and stiff but still plastic, and subjecting the mass to a mechanical working whereby individual flakes are subjected to friction and pressure that is controlled between limits. The metal flakes may be ball-milled in a liquid made up of a thinner and a leafing agent, whereby the particles are brought to flake form and furnished with a leafing film, the mixture discharged from the mill, liquid removed to such an extent that the metal content exceeds 80 per cent and the mass subjected to mechanical working by firing it through apertures of an extrusion plate, these apertures having a length not less than and preferably more than twice their diameter, whereby individual flakes are caused to move mainly flatwise over each other under controlled friction and pressure. It is preferred that the starting material is a filter cake containing 78 to 90 per cent aluminium or about 90 per cent copper. Specifications 391,839 and 477,451 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB782246A GB606751A (en) | 1946-03-13 | 1946-03-13 | Improvements in or relating to a method of increasing the specular reflectivity of metal flakes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB782246A GB606751A (en) | 1946-03-13 | 1946-03-13 | Improvements in or relating to a method of increasing the specular reflectivity of metal flakes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB606751A true GB606751A (en) | 1948-08-19 |
Family
ID=9840415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB782246A Expired GB606751A (en) | 1946-03-13 | 1946-03-13 | Improvements in or relating to a method of increasing the specular reflectivity of metal flakes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB606751A (en) |
-
1946
- 1946-03-13 GB GB782246A patent/GB606751A/en not_active Expired
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