GB803454A - Improvements in or relating to the preparation of alumina-coated pigments and compositions containing them - Google Patents
Improvements in or relating to the preparation of alumina-coated pigments and compositions containing themInfo
- Publication number
- GB803454A GB803454A GB37094/56A GB3709456A GB803454A GB 803454 A GB803454 A GB 803454A GB 37094/56 A GB37094/56 A GB 37094/56A GB 3709456 A GB3709456 A GB 3709456A GB 803454 A GB803454 A GB 803454A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aluminium
- pigments
- titanium dioxide
- isopropoxide
- alumina
- 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
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
-
- 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
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/04—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
- C09C3/041—Grinding
-
- 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
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/06—Treatment with inorganic compounds
-
- 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
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/06—Treatment with inorganic compounds
- C09C3/063—Coating
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
Alumina-coated pigments are produced by mixing a pigment with an aluminium alcoholate or with aluminium phenate, and subjecting the mixture to dry grinding in the presence of superheated steam or water vapour, the aluminium compound being thereby hydrolysed. The process may be applied to any heat-stable pulverulent material, e.g. titanium dioxide, calcium and barium base pigments containing titanium dioxide, zinc sulphide, zinc oxide, or lithopone. Suitable aluminium compounds include aluminium methoxide, ethoxide, propoxide, isopropoxide, butoxide, isobutoxide, and pentanoxide, also aluminium phenate. The compound may be dissolved in an inert organic solvent and added, e.g. by spraying, to the pigment. Examples describe the treatment of titanium dioxide pigments with aluminium isopropoxide solutions followed by mixing in a hammer mill and pulverizing in a high fluid energy disintegrator using superheated steam as the distintegrating agent; and comparisons of the products with pigments similarly treated but without the addition of aluminium isopropoxide, and with titanium dioxide pigments coated by a wet process. Specification 432,191, [Group II], is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB37094/56A GB803454A (en) | 1956-12-04 | 1956-12-04 | Improvements in or relating to the preparation of alumina-coated pigments and compositions containing them |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB37094/56A GB803454A (en) | 1956-12-04 | 1956-12-04 | Improvements in or relating to the preparation of alumina-coated pigments and compositions containing them |
Publications (1)
Publication Number | Publication Date |
---|---|
GB803454A true GB803454A (en) | 1958-10-22 |
Family
ID=10393668
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB37094/56A Expired GB803454A (en) | 1956-12-04 | 1956-12-04 | Improvements in or relating to the preparation of alumina-coated pigments and compositions containing them |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB803454A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4132724A (en) * | 1972-03-28 | 1979-01-02 | Manchem Limited | Preparation of organoaluminum compositions |
EP0249710A2 (en) * | 1986-06-20 | 1987-12-23 | Mitsubishi Materials Corporation | Process for preparing coated heat-resistant pigment |
EP0254861A1 (en) * | 1986-06-20 | 1988-02-03 | Mitsubishi Materials Corporation | Process for preparing coated cadmiun based pigments |
-
1956
- 1956-12-04 GB GB37094/56A patent/GB803454A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4132724A (en) * | 1972-03-28 | 1979-01-02 | Manchem Limited | Preparation of organoaluminum compositions |
EP0249710A2 (en) * | 1986-06-20 | 1987-12-23 | Mitsubishi Materials Corporation | Process for preparing coated heat-resistant pigment |
EP0254861A1 (en) * | 1986-06-20 | 1988-02-03 | Mitsubishi Materials Corporation | Process for preparing coated cadmiun based pigments |
EP0249710A3 (en) * | 1986-06-20 | 1988-05-04 | Mitsubishi Kinzoku Kabushiki Kaisha | Process for preparing coated heat-resistant pigment |
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