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Clarifier improves haze and provides higher stiffness
MATERIALS
News
Clarifier improves haze and provides higher stiffness A new clarifier has been developed by Adeka Corporation that the company claims exhibits a higher crystallization temperature and shorter crystallization half-time resulting in alpha-form crystals, as well as a higher crystallization rate and degree of crystallinity. Delegates to the recent Addcon conference heard that lower moulding temperatures were needed to maximize the clarifying ability of the new additive, ADK STAB NA-71.
The company says that the clarifier improves haze effectively and provides excellent transparency even at low loading levels of around 0.1 wt.%, and exhibits superior clarity in thin-walled moulded articles. Use of the clarifier also results in higher stiffness – a 25% increase in flexural modulus. This provides a good balance between clarity and stiffness, claims Adeka. As well as low loading levels, ADK STAB NA-71 is claimed to be easy-to-use and offers
an economically effective approach for clarified polypropylene. Adeka’s studies also showed that further property improvements can be achieved through an optimization of the polymer design, in particular in random co-polymers. ADK STAB NA-71 is also ideally suited for optimum performance with polymers produced with high productivity metallocene catalysts due to the fast polymerization rate and efficient co-monomer incorporation of these catalysts.
ADK STAB NA-71 is approved for use in food applications in the European Union, USA and Japan. The company says that this development will help expand the potential applications for clarified polypropylene in food contact and disposable medical device applications. Contact: Adeka Palmarole E-mail: info@adeka-palmarole. com Website: www.adeka-palmarole. com
Dyneon develops anti-dripping additive Dyneon™ MM 5935 EF, an anti-dripping melt modifier for flame retardant thermoplastics, has been developed by fluoropolymer producer Dyneon. It is the first in a new family of melt modifiers being produced by the company and meets the requirements of UL 94 vertical burn test for flame retardant thermoplastics typically used in electronic
and electrical applications. The product is said to be easier to handle and process than standard polytetrafluoroethylene (PTFE) fine powders. It can be stored above 19°C without premature fibrillation, meaning it can be stored and transported without refrigeration. The melt modifier also has free-flowing characteristics, giving excellent dispersion in compounds and resins
of acrylonite butadeine styrene (ABS), high-impact polystyrene (HIPS), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polycarbonate (PC), polyethylene (PE) and polypropylene (PP) amongst others. This dispersion enables the use of the lower concentrations needed for reliable anti-dripping.
The additive and other PTFE fine powders form fibrils of 50 mm thickness under conditions of high shear, creating a physical network frozen in the plastic. When the thermoplastic melts or burns, the fibrils relax causing contraction and suppress dripping. Contact: Dyneon Website: www.dyneon.com
RoHS compliant DecaBDE flame retardant Albemarle Corporation is launching SAYTEX® 102HP flame retardant, a higher purity form of decabromodiphenyl ether (DecaBDE).
The new product has been developed to comply with the European Union’s Restriction on the use of Hazardous Substances (RoHS) directive, covering the
Plastics Additives & Compounding March/April 2007
Material News_layout 14
use of polybrominated diphenyl ethers (PBDEs). Applications for the flame retardant include enclosures, circuit boards and connectors
for electronic and electrical devices; and wire and cables. Contact: Albemarle Corp Website: www.albemarle.com
14 01/03/2007 14:08:40
News
Clarifier improves haze and provides higher stiffness A new clarifier has been developed by Adeka Corporation that the company claims exhibits a higher crystallization temperature and shorter crystallization half-time resulting in alpha-form crystals, as well as a higher crystallization rate and degree of crystallinity. Delegates to the recent Addcon conference heard that lower moulding temperatures were needed to maximize the clarifying ability of the new additive, ADK STAB NA-71.
The company says that the clarifier improves haze effectively and provides excellent transparency even at low loading levels of around 0.1 wt.%, and exhibits superior clarity in thin-walled moulded articles. Use of the clarifier also results in higher stiffness – a 25% increase in flexural modulus. This provides a good balance between clarity and stiffness, claims Adeka. As well as low loading levels, ADK STAB NA-71 is claimed to be easy-to-use and offers
an economically effective approach for clarified polypropylene. Adeka’s studies also showed that further property improvements can be achieved through an optimization of the polymer design, in particular in random co-polymers. ADK STAB NA-71 is also ideally suited for optimum performance with polymers produced with high productivity metallocene catalysts due to the fast polymerization rate and efficient co-monomer incorporation of these catalysts.
ADK STAB NA-71 is approved for use in food applications in the European Union, USA and Japan. The company says that this development will help expand the potential applications for clarified polypropylene in food contact and disposable medical device applications. Contact: Adeka Palmarole E-mail: info@adeka-palmarole. com Website: www.adeka-palmarole. com
Dyneon develops anti-dripping additive Dyneon™ MM 5935 EF, an anti-dripping melt modifier for flame retardant thermoplastics, has been developed by fluoropolymer producer Dyneon. It is the first in a new family of melt modifiers being produced by the company and meets the requirements of UL 94 vertical burn test for flame retardant thermoplastics typically used in electronic
and electrical applications. The product is said to be easier to handle and process than standard polytetrafluoroethylene (PTFE) fine powders. It can be stored above 19°C without premature fibrillation, meaning it can be stored and transported without refrigeration. The melt modifier also has free-flowing characteristics, giving excellent dispersion in compounds and resins
of acrylonite butadeine styrene (ABS), high-impact polystyrene (HIPS), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polycarbonate (PC), polyethylene (PE) and polypropylene (PP) amongst others. This dispersion enables the use of the lower concentrations needed for reliable anti-dripping.
The additive and other PTFE fine powders form fibrils of 50 mm thickness under conditions of high shear, creating a physical network frozen in the plastic. When the thermoplastic melts or burns, the fibrils relax causing contraction and suppress dripping. Contact: Dyneon Website: www.dyneon.com
RoHS compliant DecaBDE flame retardant Albemarle Corporation is launching SAYTEX® 102HP flame retardant, a higher purity form of decabromodiphenyl ether (DecaBDE).
The new product has been developed to comply with the European Union’s Restriction on the use of Hazardous Substances (RoHS) directive, covering the
Plastics Additives & Compounding March/April 2007
Material News_layout 14
use of polybrominated diphenyl ethers (PBDEs). Applications for the flame retardant include enclosures, circuit boards and connectors
for electronic and electrical devices; and wire and cables. Contact: Albemarle Corp Website: www.albemarle.com
14 01/03/2007 14:08:40