SU604823A1 - Method of obtaining hydrophobic calcium carbonate - Google Patents
Method of obtaining hydrophobic calcium carbonateInfo
- Publication number
- SU604823A1 SU604823A1 SU762326281A SU2326281A SU604823A1 SU 604823 A1 SU604823 A1 SU 604823A1 SU 762326281 A SU762326281 A SU 762326281A SU 2326281 A SU2326281 A SU 2326281A SU 604823 A1 SU604823 A1 SU 604823A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- calcium carbonate
- hydrophobic calcium
- hydrophobic
- obtaining hydrophobic
- hydrophobicity
- Prior art date
Links
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Description
1one
Изобретение относитс к способам получени гидрофобного карбоната кальци и может найти применение в промышленности, производ щей гидрофобный карбонат кальци , например гидрофобный мел.The invention relates to methods for producing hydrophobic calcium carbonate and may find use in the industry producing hydrophobic calcium carbonate, for example hydrophobic chalk.
Известен способ получени гидрофобного карбоната кальци путем обработки его растворами солей жирных кислот или жирными кислотами 1.A method of producing hydrophobic calcium carbonate is known by treating it with solutions of fatty acid salts or fatty acids 1.
Недостатком способа вл етс низка термостойкость гидрофобного покрыти (до 100°С).The disadvantage of this method is the low temperature resistance of the hydrophobic coating (up to 100 ° C).
Известен также способ получени гидрофобного карбоната кальци путем обработки его сухим порошкообразным алкилсиликонатом натри в количестве 1,0-1,5% от веса готового продукта 2.There is also known a method for producing hydrophobic calcium carbonate by treating it with dry powdered sodium alkyl silicate in an amount of 1.0-1.5% by weight of the finished product 2.
Данный способ получени гидрофобного карбоната кальци вл етс наиболее близким к изобретению по технической сушности и достигаемому результату.This method of producing hydrophobic calcium carbonate is the closest to the invention in technical drying and the result achieved.
Недостатками такого способа вл ютс пониженна термостойкость гидрофобного покрыти (до 200°С) в течение 200 ч (при температуре 400°С гидрофобность продукта отсутствует ) и пониженна степень гидрофобности продукта (cos 6 -0,4).The disadvantages of this method are the lower heat resistance of the hydrophobic coating (up to 200 ° C) for 200 hours (at a temperature of 400 ° C, the hydrophobicity of the product is absent) and the reduced degree of hydrophobicity of the product (cos 6-0.4).
Цель изобретени - повышение термостойкости и степени гидрофобности карбоната кальци .The purpose of the invention is to increase the heat resistance and the degree of hydrophobicity of calcium carbonate.
Дл этого предлагаетс способ получени For this, a method of obtaining
гидрофобного карбоната кальци путем диспергировани карбоната кальци в присутствии добавки полиметилфенилсилоксановой жидкости (ПФМС-4) в толуоле в количестве 0,1-0,4% в расчете на основное вещество от веса готового продукта. Целесообразно готовить 20-40% растворы полиметилфенилсилоксановой жидкости в толуоле.hydrophobic calcium carbonate by dispersing calcium carbonate in the presence of an additive of polymethylphenylsiloxane liquid (PFMS-4) in toluene in an amount of 0.1-0.4% based on the weight of the finished product. It is advisable to prepare 20-40% solutions of polymethylphenylsiloxane liquid in toluene.
Пример LB шаровую мельницу подают 100 кг карбоната кальци и 0,5 кг 20%-ного раствора жидкости ПФМС-4 в толуоле (0,1% от веса готового продукта). Продолжительность диспергировани карбоната кальци сExample LB ball mill serves 100 kg of calcium carbonate and 0.5 kg of a 20% aqueous solution of PFMS-4 liquid in toluene (0.1% by weight of the finished product). The duration of dispersion of calcium carbonate with
одновременным процессом сушки его при температуре 200°С составл ет 30 мин. Полученный готовый продукт имеет дисперсность 1,25 , термостойкость 400°С (в течение 50 ч), степень гидрофобности cos6 -0,70.the simultaneous drying process at a temperature of 200 ° C is 30 minutes. The resulting finished product has a dispersion of 1.25, a heat resistance of 400 ° C (for 50 hours), the degree of hydrophobicity cos6 -0.70.
Пример 2. В шаровую мельницу подают 100 кг карбоната кальци и 2,0 кг 20%-ного раствора жидкости ПФМС-4 в толуоле (0,4% от веса готового продукта). Продолжительность диспергировани карбоната кальци с одновременным процессом сушки его при температуре 250°С составл ет 30 мин. Полученный готовый продукт имеет дисперсность 1,2 , термостойкость 400°С (в течение 50 ч), степень гидрофобности ,88.Example 2. 100 kg of calcium carbonate and 2.0 kg of a 20% aqueous solution of PFMS-4 liquid in toluene (0.4% by weight of the finished product) are fed into a ball mill. The duration of dispersion of calcium carbonate with a simultaneous drying process at a temperature of 250 ° C is 30 minutes. The resulting finished product has a dispersion of 1.2, heat resistance 400 ° C (for 50 hours), the degree of hydrophobicity, 88.
Качество гидрофобного карбоната кальци повышаетс , термостойкость гидрофобного покрыти составл ет до 400°С, степень гидрофобности cos ,88.The quality of the hydrophobic calcium carbonate is increased, the heat resistance of the hydrophobic coating is up to 400 ° C, and the degree of hydrophobicity is cos, 88.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU762326281A SU604823A1 (en) | 1976-02-23 | 1976-02-23 | Method of obtaining hydrophobic calcium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU762326281A SU604823A1 (en) | 1976-02-23 | 1976-02-23 | Method of obtaining hydrophobic calcium carbonate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU604823A1 true SU604823A1 (en) | 1978-04-30 |
Family
ID=20649504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU762326281A SU604823A1 (en) | 1976-02-23 | 1976-02-23 | Method of obtaining hydrophobic calcium carbonate |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU604823A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4847086A (en) * | 1984-05-10 | 1989-07-11 | Neutralith Antikaries Gmbh & Co. Kg | Agent for increasing the pH value of dental plaque and process for its preparation |
| CN103087551A (en) * | 2013-02-04 | 2013-05-08 | 道奇威（成都）科技有限公司 | Surface modification method for improving hydrophobicity and temperature resistance of calcium carbonate for plastics |
| RU2599668C2 (en) * | 2012-02-09 | 2016-10-10 | Омиа Интернэшнл Аг | Composition and method for controlling wettability of surfaces |
-
1976
- 1976-02-23 SU SU762326281A patent/SU604823A1/en active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4847086A (en) * | 1984-05-10 | 1989-07-11 | Neutralith Antikaries Gmbh & Co. Kg | Agent for increasing the pH value of dental plaque and process for its preparation |
| RU2599668C2 (en) * | 2012-02-09 | 2016-10-10 | Омиа Интернэшнл Аг | Composition and method for controlling wettability of surfaces |
| CN103087551A (en) * | 2013-02-04 | 2013-05-08 | 道奇威（成都）科技有限公司 | Surface modification method for improving hydrophobicity and temperature resistance of calcium carbonate for plastics |
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