ES448165A1 - Pigments coated with hydrous oxides - Google Patents
Pigments coated with hydrous oxidesInfo
- Publication number
- ES448165A1 ES448165A1 ES448165A ES448165A ES448165A1 ES 448165 A1 ES448165 A1 ES 448165A1 ES 448165 A ES448165 A ES 448165A ES 448165 A ES448165 A ES 448165A ES 448165 A1 ES448165 A1 ES 448165A1
- Authority
- ES
- Spain
- Prior art keywords
- calculated
- tio2
- suspension
- weight
- pigmentary
- 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
- C09C1/36—Compounds of titanium
- C09C1/3607—Titanium dioxide
- C09C1/3653—Treatment with inorganic compounds
- C09C1/3661—Coating
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Paints Or Removers (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
A process for the preparation of a coated TiO2 pigment, consisting essentially of a pigmentary TiO2 core, a dense inner coating of 1% to 10% by weight of dense amorphous silica, calculated as Si02 and based on said pigment TiO2 and 0 to 5% by weight of alumina, calculated as Al2O3 and based on said pigmentary TiO2 and a porous external coating of porous silica and alumina, the porous silica being present in a proportion of 0.5 to 15% by weight, calculated as SiO2 and based on the pigmentary TiO2 and the alumina being present in a proportion of 0.5 to 11% by weight, calculated as Al2O3 and based on said pigmentary TiO2, whose procedure consists of: (i) adjusting to the pH of an aqueous suspension of pigmentary TiO2 that, optionally, may have been previously heated to a temperature comprised between 80 and 90ºC, to a value comprised between approximately 9 and 10. (ii) adding to said suspension an aqueous solution of soluble silicate, in an amount calculated to provide from 1 to 10% by weight of silica, calculated as SiO2 and based on said pigment TiO2. (iii) slowly add a dilute aqueous acid to said suspension until its pH is 6 to 7.7. (iiia) optionally adding to said suspension, maintained at a pH of 6 to 9, an aqueous solution of soluble aluminate in an amount calculated to provide 0.5 to 5% by weight of alumina, calculated as Al203 and based on said Ti02 pigmentary. (iv) adding to said suspension, maintained at a pH of 5 to 9, an aqueous solution of a soluble silicate in an amount calculated to provide 0.5 to 15%, by weight of silica, calculated as Si02 and based on said Pigmentary TiO2. (v) adding to said suspension, maintained at a pH of 4 to 9, an aqueous solution of a soluble aluminate in an amount calculated to provide 0.5 to 11% by weight of alumina, calculated as Al2O3 and based on said TiO2 pigmentary. (vi) adjust the pH of said suspension between 7 and 9. (vii) separating the resulting coated TiO2 pigment from said suspension, optionally after step (iii) and/or before step (v), curing said suspension for at least 50 minutes. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US58019275A | 1975-05-23 | 1975-05-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES448165A1 true ES448165A1 (en) | 1977-11-01 |
Family
ID=24320088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES448165A Expired ES448165A1 (en) | 1975-05-23 | 1976-05-21 | Pigments coated with hydrous oxides |
Country Status (17)
| Country | Link |
|---|---|
| JP (1) | JPS603111B2 (en) |
| AT (1) | AT347545B (en) |
| AU (1) | AU508602B2 (en) |
| BE (1) | BE842086A (en) |
| BR (1) | BR7603223A (en) |
| CA (1) | CA1053087A (en) |
| CH (1) | CH602900A5 (en) |
| DE (1) | DE2622902A1 (en) |
| ES (1) | ES448165A1 (en) |
| FR (1) | FR2311823A1 (en) |
| GB (1) | GB1541621A (en) |
| IE (1) | IE43470B1 (en) |
| IT (1) | IT1060657B (en) |
| MX (1) | MX143356A (en) |
| NL (1) | NL7605484A (en) |
| NO (1) | NO761738L (en) |
| SU (1) | SU688136A3 (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4125412A (en) * | 1976-09-09 | 1978-11-14 | E. I. Du Pont De Nemours And Company | Process for the production of durable titanium dioxide pigment |
| GB2108098B (en) * | 1981-10-30 | 1985-03-20 | Tioxide Group Plc | Improved pigments and their preparation |
| GB2108097B (en) * | 1981-10-30 | 1985-01-03 | Tioxide Group Plc | Improved pigments and their preparation |
| US4781761A (en) * | 1986-04-30 | 1988-11-01 | E. I. Du Pont De Nemours And Company | Titanium dioxide pigment coated with boria-modified silica |
| JPS63173826U (en) * | 1987-05-06 | 1988-11-11 | ||
| GB8712752D0 (en) * | 1987-05-30 | 1987-07-01 | Tioxide Group Plc | Particulate material |
| FI100659B (en) * | 1988-08-05 | 1998-01-30 | Huber Corp J M | Paper pigment composite products and process for their manufacture |
| GB8829402D0 (en) * | 1988-12-16 | 1989-02-01 | Tioxide Group Plc | Dispersion |
| GB8926031D0 (en) * | 1989-11-17 | 1990-01-10 | Tioxide Group Plc | Film-forming compositions |
| GB9121153D0 (en) * | 1991-10-04 | 1991-11-13 | Tioxide Chemicals Ltd | Method of preparing sunscreens |
| GB9121143D0 (en) * | 1991-10-04 | 1991-11-13 | Tioxide Chemicals Limited | Dispersions |
| US5520917A (en) * | 1992-07-27 | 1996-05-28 | Suzuki Yushi Industries Co., Ltd. | Materials in the form of colored spherical fine particles |
| JP4668583B2 (en) * | 2004-11-04 | 2011-04-13 | 石原産業株式会社 | Titanium dioxide pigment |
| US8840719B2 (en) * | 2011-03-09 | 2014-09-23 | Tronox Llc | Titanium dioxide pigments and manufacturing method |
| JP2014534314A (en) * | 2011-10-28 | 2014-12-18 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニーＥ．Ｉ．Ｄｕ Ｐｏｎｔ Ｄｅ Ｎｅｍｏｕｒｓ Ａｎｄ Ｃｏｍｐａｎｙ | Treated inorganic pigments with improved dispersibility and their use in coating compositions |
| TWI613261B (en) * | 2012-06-29 | 2018-02-01 | 克洛諾斯國際有限公司 | Process for the surface-treatment of inorganic pigment particles |
| WO2017158726A1 (en) | 2016-03-15 | 2017-09-21 | 本田技研工業株式会社 | Vehicle control system, vehicle control method, and vehicle control program |
| RU2665513C1 (en) * | 2017-06-20 | 2018-08-30 | Общество с ограниченной ответственностью "ПИГМЕНТ-ФМ" | White color pigment particles agglomerates production method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2885366A (en) * | 1956-06-28 | 1959-05-05 | Du Pont | Product comprising a skin of dense, hydrated amorphous silica bound upon a core of another solid material and process of making same |
| DE1592951B2 (en) * | 1966-01-07 | 1980-10-02 | E.I. Du Pont De Nemours And Co., Wilmington, Del. (V.St.A.) | Pigment mass based on crystalline titanium dioxide and process for its production |
| US3591398A (en) * | 1968-04-05 | 1971-07-06 | Du Pont | Process for producing titanium dioxide pigments |
| FR2054611B1 (en) * | 1969-07-03 | 1973-04-06 | Titan Gmbh | |
| CA1045912A (en) * | 1973-12-20 | 1979-01-09 | Alvin Allen | Tio2 pigment coated successively with silica and alumina |
-
1976
- 1976-04-06 FR FR7609919A patent/FR2311823A1/en active Granted
- 1976-05-10 MX MX164635A patent/MX143356A/en unknown
- 1976-05-18 JP JP51056169A patent/JPS603111B2/en not_active Expired
- 1976-05-19 GB GB20773/76A patent/GB1541621A/en not_active Expired
- 1976-05-20 SU SU762360956A patent/SU688136A3/en active
- 1976-05-20 IT IT23466/76A patent/IT1060657B/en active
- 1976-05-21 NO NO761738A patent/NO761738L/no unknown
- 1976-05-21 NL NL7605484A patent/NL7605484A/en not_active Application Discontinuation
- 1976-05-21 BR BR7603223A patent/BR7603223A/en unknown
- 1976-05-21 CH CH644276A patent/CH602900A5/xx not_active IP Right Cessation
- 1976-05-21 AU AU14157/76A patent/AU508602B2/en not_active Expired
- 1976-05-21 ES ES448165A patent/ES448165A1/en not_active Expired
- 1976-05-21 DE DE19762622902 patent/DE2622902A1/en active Granted
- 1976-05-21 CA CA253,112A patent/CA1053087A/en not_active Expired
- 1976-05-21 AT AT373076A patent/AT347545B/en not_active IP Right Cessation
- 1976-05-21 BE BE167223A patent/BE842086A/en unknown
- 1976-05-21 IE IE1074/76A patent/IE43470B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1541621A (en) | 1979-03-07 |
| SU688136A3 (en) | 1979-09-25 |
| AU508602B2 (en) | 1980-03-27 |
| ATA373076A (en) | 1978-05-15 |
| FR2311823A1 (en) | 1976-12-17 |
| JPS603111B2 (en) | 1985-01-25 |
| IE43470B1 (en) | 1981-03-11 |
| BR7603223A (en) | 1977-02-01 |
| NL7605484A (en) | 1976-11-25 |
| IT1060657B (en) | 1982-08-20 |
| MX143356A (en) | 1981-04-22 |
| JPS51143026A (en) | 1976-12-09 |
| BE842086A (en) | 1976-11-22 |
| NO761738L (en) | 1976-11-24 |
| AU1415776A (en) | 1977-11-24 |
| DE2622902C2 (en) | 1988-06-30 |
| DE2622902A1 (en) | 1976-12-09 |
| IE43470L (en) | 1976-11-26 |
| CA1053087A (en) | 1979-04-24 |
| FR2311823B1 (en) | 1982-02-26 |
| AT347545B (en) | 1978-12-27 |
| CH602900A5 (en) | 1978-08-15 |
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