| Hydrotalcite DHT-4A(KYOWA)
DHT-4Ais a synthetic Hydrotalcite-like compound and has recently been developed for use as a stabilizer(halogen scavenger) in plastic processes such as the production of polyolefins.
DHT-4A is needed to produce polyolefins which have residual catalyst components.
DHT-4A is the most suitable halogen scavenger for transparent films of polyolefins because of its low level of water carry-over as well as its refractive index which is clase to that of polyolefins.
DHT-4A is indispensable in producing adhesive graft polymers in which calcium stearate can not be used due to bleed-out.
DHT-4A provides long term weatherability when used with HALS
1. Quantities of additives are minimized.
DHT-4A has about 5 times the capacity of calcium stearate to protect against corrosivity. Any loss of the polymers physical properties resulting from additives is thereby reduced.
2.Polymer yellowing is avoided.
When DHT-4A contacts phenolic type stabilizers such as B.H.T., that are widely used as antioxidants, DHT-4A does not cause polymer yellowing.
3.No stearic acid vapor problem.
By using DHT-4A, troublesome stearic acid vapors can be eliminated.
4.Reduction of water carry-over.
The amount of water carry-over while using DHT-4A is noticably less than in the case of calcium stearate.
Product technical parameter:
Raw materials and component：Magnesium hydroxide 95%-100%
Handling and Storage:
Handling precautions: Users had better wear glasses and rubber gloves
Storage precautions: This product is best to store in a dry place. If DHT-4A is not run out immediately after unpacking, please seal the opening as soon as possible. DHT-4A should be stored without contacting oxidation.
Package：20kg/bag, 800kg/pallet or 700kg/pallet