GB895751A - Improvements in or relating to a process for the production of pigment preparations - Google Patents
Improvements in or relating to a process for the production of pigment preparationsInfo
- Publication number
- GB895751A GB895751A GB14144/59A GB1414459A GB895751A GB 895751 A GB895751 A GB 895751A GB 14144/59 A GB14144/59 A GB 14144/59A GB 1414459 A GB1414459 A GB 1414459A GB 895751 A GB895751 A GB 895751A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- pigment
- water
- product
- acetone
- 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
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/006—Preparation of organic pigments
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
A process for the production of pigment preparations involving the reduction of the particle size of the subdivided pigment comprises subjecting to mechanical comminution a free-flowing suspension of the water-moist pigment, such as an aqueous presscake of copper phthalocyanine, in a solution of a water-insoluble natural or synthetic polymerization or polycondensation product in an organic solvent and drying the product or, alternatively, precipitating the product with water or other solvent the precipitate formed being filtered off, washed and dried. The grinding or mechanical comminution may be carried out in a mill of ball or roller type or in a homogenizing machine operating under pressure in which latter case a cooling system is preferably employed. The rate of homogenization can be accelerated or the homogenizing effect increased by the addition of surface active substances, e.g. higher molecular amines or higher molecular quaternary ammonium salts. The solution in which the pigment is suspended may be (a) a solution of secondary cellulose acetate, an acrylate-methacrylate copolymer, an acrylonitrile-methacrylate copolymer or collodion cotton in acetone (b) a solution of vinyl chloride-vinyl acetate copolymer, polyvinyl acetate or polystyrene in an acetic acid alkyl ester or (c) a solution of polyvinyl chloride in carbon disulphide and acetone. Several examples are described in all of which the suspension is ground or comminuted until the bulk of the particles is reduced to a size of less than one micron.ALSO:A process for the production pigment preparations involving the reduction of the particle size of the subdivided pigment comprises subjecting to mechanical comminution a free-flowing suspension of the water-moist pigment, such as an aqueous presscake of copper phthalocyanine, in a solution of a water-insoluble natural or synthetic polymerization or polycondensation product in an organic solvent and drying the product or, alternatively, precipitating the product with water or other solvent, the precipitate formed being filtered off, washed and dried. The grinding or mechanical comminution may be carried out in a mill of ball or roller type or in a homogenizing machine operating under pressure in which latter case a cooling system is preferably employed. The rate of homogenization can be accelerated or the homogenizing effect increased by the addition of surface active substances e.g. higher molecular amines or higher molecular quaternary ammonium salts. The solution in which the pigment is suspended may be (a) a solution of secondary cellulose acetate, an acrylate-methacrylate copolymer, an acrylonitrile-methacrylate copolymer or collodion cotton in acetone (b) a solution of vinyl chloride-vinyl acetate copolymer, polyvinyl acetate or polystyrene in an acetic acid akyl ester or (c) a solution of polyvinyl chloride in carbon disulphide and acetone. Several examples are described in all of which the suspension is ground or comminuted until the bulk of the particles is reduced to a size of less than one micron.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH895751X | 1958-04-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB895751A true GB895751A (en) | 1962-05-09 |
Family
ID=4546198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14144/59A Expired GB895751A (en) | 1958-04-25 | 1959-04-24 | Improvements in or relating to a process for the production of pigment preparations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB895751A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4478968A (en) * | 1983-04-06 | 1984-10-23 | Ciba-Geigy Corporation | Manufacture of resin extended pigments |
| GB2151650A (en) * | 1983-12-23 | 1985-07-24 | Inmont Corp | Continuous method of producing phthalocyanine pigment dispersions in organic solvent |
| US4548968A (en) * | 1983-04-06 | 1985-10-22 | Ciba Geigy Corporation | Manufacture of resin extended pigments |
-
1959
- 1959-04-24 GB GB14144/59A patent/GB895751A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4478968A (en) * | 1983-04-06 | 1984-10-23 | Ciba-Geigy Corporation | Manufacture of resin extended pigments |
| US4548968A (en) * | 1983-04-06 | 1985-10-22 | Ciba Geigy Corporation | Manufacture of resin extended pigments |
| GB2151650A (en) * | 1983-12-23 | 1985-07-24 | Inmont Corp | Continuous method of producing phthalocyanine pigment dispersions in organic solvent |
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