RO87986B1 - Process for obtaining aluminium hydroxide for cosmetic use - Google Patents
Process for obtaining aluminium hydroxide for cosmetic useInfo
- Publication number
- RO87986B1 RO87986B1 RO112811A RO11281183A RO87986B1 RO 87986 B1 RO87986 B1 RO 87986B1 RO 112811 A RO112811 A RO 112811A RO 11281183 A RO11281183 A RO 11281183A RO 87986 B1 RO87986 B1 RO 87986B1
- Authority
- RO
- Romania
- Prior art keywords
- aluminum hydroxide
- temperature
- aluminum
- hydroxide
- cosmetic use
- Prior art date
Links
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Cosmetics (AREA)
Abstract
Inventia se refera la un procedeu de obtinere a hidroxidului de aluminiu de uz cosmetic, conform caruia, folosindu-se ca material de placare hidroxid tehnic de aluminiu avînd un continut de 35...37% în greutate aluminiu si un continut de sub 1% în greutate fier, hidroxidul tehnic de aluminiu se trece în aluminat de sodiu prin dizolvare alcalina într-o solutie formata din 11 p/g hidroxid de sodiu tehnic si 17 p/g apa, la temperatura de 90...100 degree C, sub agitare timp de 4,5 h, dupa care în suspensie se adauga 0,04 p/g carbune activ, cu agitare înca o ora la aceeasi temperatura, rezultînd dupa filtrare o solutie de aluminat de sodiu, continînd 155.165 g/l aluminiu si 0,0015 g/l fier, solutie care se trateaza apoi cu acid clorhidric pîna la un pH de 6,7...7,0 pentru precipitarea hidroxidului de aluminiu, precipitatul astfel obtinut fiind supus, în continuare spalarii prin sedimentari si decantari succesive, pentru eliminarea clorurii de sodiu din sistem si apoi filtrarii, iar în final, hidroxidul de aluminiu filtrat, este supus uscarii, dupa un program de paliere de temperatura de 50, 70, 90 si respectiv 110 degree C, pe fiecare palier temperatura mentinîndu-se 1...3 h, iar între paliere gradientul de temperatura este cuprins între 1...6 degree /min.The invention relates to a process for the production of aluminum hydroxide for cosmetic use, according to which it is used as technical aluminum hydroxide plating material having 35 ... 37% by weight aluminum content and a content of less than 1% iron aluminum hydroxide was converted to sodium aluminate by alkaline dissolution in a solution of 11 g / g of technical sodium hydroxide and 17 g / g of water at a temperature of 90-100 ° C, under stirring for 4.5 hours, then 0.04 g / g of activated charcoal is added in suspension, with stirring for an additional hour at the same temperature, resulting in filtration of a sodium aluminate solution containing 155.165 g / l of aluminum and 0 , 0015 g / l of iron, which solution is then treated with hydrochloric acid to a pH of 6.7-7.0 for the precipitation of aluminum hydroxide, the thus obtained precipitate being subjected to successive sedimentation and decanting, for removing sodium chloride from the system and then filtering, i Finally, the filtered aluminum hydroxide was subjected to drying after a temperature range of 50, 70, 90 and 110 ° C, respectively, on each level maintaining the temperature for 1 ... 3 hours, and the gradient the temperature is between 1 ... 6 degrees / min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO83112811A RO87986A2 (en) | 1983-12-09 | 1983-12-09 | PROCESS FOR OBTAINING COSMETIC ALUMINUM HYDROXIDE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO83112811A RO87986A2 (en) | 1983-12-09 | 1983-12-09 | PROCESS FOR OBTAINING COSMETIC ALUMINUM HYDROXIDE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO87986B1 true RO87986B1 (en) | 1985-11-01 |
| RO87986A2 RO87986A2 (en) | 1985-11-30 |
Family
ID=20113991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO83112811A RO87986A2 (en) | 1983-12-09 | 1983-12-09 | PROCESS FOR OBTAINING COSMETIC ALUMINUM HYDROXIDE |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO87986A2 (en) |
-
1983
- 1983-12-09 RO RO83112811A patent/RO87986A2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO87986A2 (en) | 1985-11-30 |
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