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DHT-4A is a highly effective acid scavenger. It's unique anion exchange properties have resulted in the implementation of DHT-4A in a wide range of plastic and rubber applications. Where there's a problem caused by acids, this is the recommended stabilizer for demanding applications.
DHT-4A® is the flagship product of Kisuma Chemicals' branded range of hydrotalcite-like materials that have been developed specifically for irreversible acid scavenging in polymer production and processing systems. Already for more than 30 years, DHT-4A® is considered to be the industry standard for deactivation of catalyst residues in polyolefins. The product is environmentally harmless and is generally acknowledged to be the best of its kind. This is reflected by the fact that DHT-4A® is on the approval list of practically all polyolefin technology providers globally.
The interesting characteristics of DHT-4A opens doors to an wide range of applications. Compared to alternatives, such as Calcium Stearate, DHT-4A is three times more effective. This high efficiency, combined with the high purity and well defined small particle size of DHT-4A, results in a minor impact on the polymer properties. The unique mechanism by which DHT-4A renders anions inert results in a much smaller chance in side effects, such as those caused by Stearic Acid.
Some examples of applications in which DHT-4A has successfully been implemented:
- Deactivation of catalytic residues
- Deactivation of halogen ions from radicals in halogenated flame retardants (e.g. bromide)
- Acid acceptor in halogenated rubber, where low water adsorption is important.
- Acid scavenger in glass fiber filled compounds
- IR adsorber in agricultural films, to increase heat retention and protect HALS.
- Partial replacement of Calcium Stearate, to deactive stearic acid.
Additional (technical) information about this and other products can be found on our homepage. Up-to-date support documents including Technical Datasheets (TDS), Material Safety Datasheets (MSDS) and brochures can be downloaded in multiple languages: https://kisuma.com/products/downloads
|Country of Manufacture||Netherlands|
|Measurement of primary packaging||640 (+/-10 mm) x 540 (+/- 5 mm) x 140 (+/- 5 mm)|
|Primary packaging material||PE valve bag preprinted with KCBV logo and product name|
|Shelf life||2 years after validation|
|Weight per unit||20 kg|
|Weight per pallet||Max. 800 kg|
|Chemical name of the main active ingredient||Magnesium Aluminium Hydroxide Carbonate (Hydrate)|
|EU-REACH/CLP reference number||01-2119489902-26-0000|
|INDEX number as listed in annex VI of EUCLP||No classification|