GB1321886A - Treatment of pigmentary titanium dioxide - Google Patents
Treatment of pigmentary titanium dioxideInfo
- Publication number
- GB1321886A GB1321886A GB3227070A GB3227070A GB1321886A GB 1321886 A GB1321886 A GB 1321886A GB 3227070 A GB3227070 A GB 3227070A GB 3227070 A GB3227070 A GB 3227070A GB 1321886 A GB1321886 A GB 1321886A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tio
- silicate
- coating
- hydrated
- treatment
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/006—Coating of the granules without description of the process or the device by which the granules are obtained
-
- 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
- C09C1/36—Compounds of titanium
- C09C1/3607—Titanium dioxide
- C09C1/3653—Treatment with inorganic compounds
- C09C1/3661—Coating
-
- 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
- C01P2006/19—Oil-absorption capacity, e.g. DBP values
-
- 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
-
- 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
- C01P2006/90—Other properties not specified above
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
1321886 Coated TiO 2 NATIONAL LEAD CO 2 July 1970 [3 July 1969 20 April 1970] 32270/70 Heading C1N Pigmentary TiO 2 is coated with hydrated Al silicate, preferably 4À5-20% by wt. of the TiO 2 , and optionally with up to 2% of porous hydrated Al 2 O 3 , by maintaining an aqueous slurry of TiO 2 at a pH of 8À5-10À5 and at a temperature of from 70‹ C. to its b.pt, simultaneously adding solutions of salts of Si and Al (e.g. Na silicate, Al 2 (SO 4 ) 3 ) in a SiO 2 : Al 2 O 3 wt. ratio of 2 : 1 to 8 : 1 to precipitate Al silicate at a rate not greater than 10% per hr. on a TiO 2 wt. basis, and ageing the slurry at a pH of 7À0-10À5; a further Al silicate coating, and/or a porous hydrated Al 2 O 3 coating is then provided (the latter by lowering the pH to 5À0-5À5, adding Na aluminate or Al 2 (SO 4 ) 3 and then adjusting the pH to 7-8). The pigment may be dried and milled before and after the Al 2 O 3 coating. Drying may be effected at 120-350‹ C. or up to 500‹ C. for Al 2 O 3 , followed by steam fluid energy milling using a steam : pigment ratio of 3 : 1 to 5 : 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US83908869A | 1969-07-03 | 1969-07-03 | |
| US3021970A | 1970-04-20 | 1970-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1321886A true GB1321886A (en) | 1973-07-04 |
Family
ID=26705793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3227070A Expired GB1321886A (en) | 1969-07-03 | 1970-07-02 | Treatment of pigmentary titanium dioxide |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE752899A (en) |
| DE (1) | DE2033038C3 (en) |
| FI (1) | FI49173C (en) |
| FR (1) | FR2054611B1 (en) |
| GB (1) | GB1321886A (en) |
| NL (1) | NL158212B (en) |
| NO (1) | NO133809C (en) |
| SE (1) | SE362889B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2311823A1 (en) * | 1975-05-23 | 1976-12-17 | Du Pont | PIGMENT TIO2 COATED WITH DENSE SILICA AND ALUMINA / POROUS SILICA |
-
1970
- 1970-07-01 NO NO258770A patent/NO133809C/no unknown
- 1970-07-01 NL NL7009716A patent/NL158212B/en not_active IP Right Cessation
- 1970-07-01 FR FR7024469A patent/FR2054611B1/fr not_active Expired
- 1970-07-02 SE SE919370A patent/SE362889B/xx unknown
- 1970-07-02 BE BE752899D patent/BE752899A/en not_active IP Right Cessation
- 1970-07-02 GB GB3227070A patent/GB1321886A/en not_active Expired
- 1970-07-02 FI FI187770A patent/FI49173C/en active
- 1970-07-03 DE DE19702033038 patent/DE2033038C3/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2033038B2 (en) | 1978-02-16 |
| DE2033038C3 (en) | 1978-10-12 |
| FI49173C (en) | 1975-04-10 |
| NL7009716A (en) | 1971-01-05 |
| BE752899A (en) | 1970-12-16 |
| FI49173B (en) | 1974-12-31 |
| SE362889B (en) | 1973-12-27 |
| NL158212B (en) | 1978-10-16 |
| FR2054611B1 (en) | 1973-04-06 |
| NO133809B (en) | 1976-03-22 |
| NO133809C (en) | 1976-06-30 |
| FR2054611A1 (en) | 1971-04-23 |
| DE2033038A1 (en) | 1971-01-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |