GB844786A - Improvements in and relating to processes of preparing pigmented coating products and pigment dispersions in resins and other binders and/or solutions of these - Google Patents
Improvements in and relating to processes of preparing pigmented coating products and pigment dispersions in resins and other binders and/or solutions of theseInfo
- Publication number
- GB844786A GB844786A GB2157857A GB2157857A GB844786A GB 844786 A GB844786 A GB 844786A GB 2157857 A GB2157857 A GB 2157857A GB 2157857 A GB2157857 A GB 2157857A GB 844786 A GB844786 A GB 844786A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dispersion
- shear
- binder
- solvent
- secs
- 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)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
Dispersions of pigments in liquid vehicles are prepared by mixing pigment, a binder and a volatile solvent in a container by the application of shear forces at a rate of shear not less than 2000 secs-1 and diluting the dispersion with additional binder by evaporating at least some of the solvent from the dispersion whilst the latter is in a state of shear and simultaneously adding binder or vehicle to dilute the dispersion, such evaporation and dilution being continued until the dispersion contains sufficient binder to prevent re-agglomeration or re-aggregation of the pigment on further thinning and not more solvent than is required in the completed dispersion. A partial vacuum may be created in the mixing vessel before dispersion is commenced. A suitable apparatus is a twin contra-revolving sigma-bladed horizontal water-cooled and steam-jacketed paste or plastic mixer. Rates of shear from 2000 to above 100,000 secs-1 may be employed. Examples are given of dispersing Milori blue in a solution of alkyd resin in white spirit, and in a polymerized rosin dissolved in toluol. Heat treated linseed oil may also be used as a vehicle. The product may be used in paints, lacquers, printing inks and the like.ALSO:Dispersions of pigments in liquid vehicles are prepared by mixing pigment, a binder and a volatile solvent in a container by the application of shear forces at a rate of shear not less that 2000 secs-1 and diluting the dispersion with additional binder by evaporating at least some of the solvent from the dispersion whilst the latter is in a state of shear and simultaneously adding binder or vehicle to dilute the dispersion, such evaporation and dilution being continued until the dispersion contains sufficient binder to prevent reagglomeration or re-aggregation of the pigment on further thinning and not more solvent than is required in the completed dispersion. A partial vacuum may be created in the mixing vessel before dispersion is commenced. A suitable apparatus is a twin contra-revolving sigma-bladed horizontal water-cooled and steam-jacketed paste or plastic mixer. Rates of shear from 2000 to above 100,000 secs-1 may be employed. Examples are given of dispersing Milori blue in a solution of alkyl resin in white spirit, and in a polymerized rosin dissolved in toluol. Heat treated linseed oil may also be used as a vehicle. The product may be used in paints, lacquers, printing inks and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2157857A GB844786A (en) | 1957-01-08 | 1957-01-08 | Improvements in and relating to processes of preparing pigmented coating products and pigment dispersions in resins and other binders and/or solutions of these |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2157857A GB844786A (en) | 1957-01-08 | 1957-01-08 | Improvements in and relating to processes of preparing pigmented coating products and pigment dispersions in resins and other binders and/or solutions of these |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB844786A true GB844786A (en) | 1960-08-17 |
Family
ID=10165274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2157857A Expired GB844786A (en) | 1957-01-08 | 1957-01-08 | Improvements in and relating to processes of preparing pigmented coating products and pigment dispersions in resins and other binders and/or solutions of these |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB844786A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2132546A1 (en) * | 1971-06-30 | 1973-01-18 | Basf Ag | PROCESS FOR THE PRODUCTION OF PIGMENT PASTE FOR PRINTING AND VARNISHING INKS |
| CN115291450A (en) * | 2022-08-19 | 2022-11-04 | 中国科学院苏州纳米技术与纳米仿生研究所 | Method for printing electrolyte layer, electrochromic device and preparation method thereof |
-
1957
- 1957-01-08 GB GB2157857A patent/GB844786A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2132546A1 (en) * | 1971-06-30 | 1973-01-18 | Basf Ag | PROCESS FOR THE PRODUCTION OF PIGMENT PASTE FOR PRINTING AND VARNISHING INKS |
| CN115291450A (en) * | 2022-08-19 | 2022-11-04 | 中国科学院苏州纳米技术与纳米仿生研究所 | Method for printing electrolyte layer, electrochromic device and preparation method thereof |
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