Hydrotalcite is a kind of naturally yielded clay mineral. The typical chemical composition is a carbonic acid type, and the composition is Mg₆Al₂(OH)₁₆CO₃·4(H₂O). TODA KOGYO artificially synthesizes hydrotalcite.
Hydrotalcite is generally represented layered double hydroxides (LDH) of Mg/Al and carbonate type. Anions such as chloride ion (Cl⁻) are adsorbed by ion exchange with carbonate ion (CO₃²⁻) between Mg/Al type layers. In addition, the contained carbonate ion (CO₃²⁻) absorbs infrared rays and exert a heat storage and heat retention effect. Hydrotalcite also have other functions such as water adsorption or an acid adsorbent for rubber containing halogen.
TODA KOGYO's hydrotalcite (Mg/Al layered compound) have excellent infrared absorption property and transparency. They can enhance heat retention when mixed into a polyolefin film for agricultural greenhouses. Consequently, hydrotalcite contribute to the protection of the global environment by reducing the energy.
Product Information
- Main Features
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- Intercalation of various anions
- Colorless additives by combination of colorless metals
- Combination of various metals (divalent or trivalent)
- Main Applications
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- Raw material for lead-free vinyl chloride stabilizers(Anion catcher for various resins)
- Heat retaining agent for agricultural film
- acid acceptor
- Product Lineup/ Grade
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Product Lineup/ Grade Characteristic Large particles Average particle size：300nm BET specific surface area：12〜14m²/gMiddle particles Average particle size：200nm BET specific surface area：13〜15m²/gSmall particles Average particle size：60nm BET specific surface area：40〜45m²/gHydrotalcite is generally represented layered double hydroxides (LDH) of Mg/Al and carbonate type. Anions such as chloride ion (Cl⁻) are adsorbed by ion exchange with carbonate ion (CO₃²⁻) between Mg/Al type layers. In addition, the contained carbonate ion (CO₃²⁻) absorbs infrared rays and exert a heat storage and heat retention effect. Hydrotalcite also have other functions such as water adsorption or an acid adsorbent for rubber containing halogen.
TODA KOGYO’s hydrotalcite has been used for the following applications by taking the features.
Environmentally friendly lead-free materials for polyvinyl chloride stabilizers.
Heat retaining agent for agricultural polyolefin film.
Ion trap materials for semiconductor encapsulants.
Anion adsorbent for water treatment.
Our long-cultivated wet synthesis technologies enable us to design the optimum particle shape and control the composition for various applications. -
Large particles -
Middle particles -
Small particles