Plastics Additives & Compounding March/April 2009

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NewsMATERIALS

New impact modifier offers cost and performance efficienciesArkema Inc.’s PVC Additives Group has introduced Durastrength® 619 acrylic impact modifier to the PVC market. The company says that Durastrength 619 acrylic impact modifier offers efficiency advantages over existing acrylic modifiers and chlorinated polyethylene (CPE), allowing processors to lower their overall formulation costs. Durastrength 619 impact modifiers, as well as other Durastrength impact modifiers, and Plastistrength®

process aids are manufactured at the company’s Axis, AL, plant in the USA.According to Arkema, Durastrength 619 is an acrylic impact modifier that imparts good impact properties to rigid PVC products and also provides good processability without the need for adding processing aids for most applications. Durastrength 619 is claimed to offer formulation flexibility through a combination of

good impact resistance and processability. Superior impact performance can be used to improve properties or decrease modifier loading at constant performance.“This is a perfect example of Arkema’s focus and commitment to the PVC market. With the current downturn in the economy, we feel it’s more important than ever to invest in new product development and provide a foundation to support

the PVC market for years to come,” said Jim McAliney, general manager, PVC Additives.Arkema’s PVC Additives Group offers a wide range of products to the PVC market including Durastrength impact modifiers, Plastistrength process aids, Thermolite® tin stabilizers, Clearstrength® MBS impact modifiers and Vikoflex® epoxidized soybean oil.Contact: Arkema Inc.Website: www.arkema-inc.com

Chemtura introduces new mixed metal stabilizersChemtura Corporation has introduced the Mark® mixed metal, liquid stabilizer range of additives for PVC that are free of ptBBA (para-tertiarybutyl benzoic acid), nonyl phenol and 2-EHA (2-ethyl hexanoic acid). The company says that the substances in the mixed metals have been successfully

pre-registered under REACH and do not contain any components which may be subject to authorization such as carcinogenic, mutagenic or reprotoxic (CMR) materials.The new stabilizers will be available in two ranges, the Mark 800 series and Mark 900 series. Designed to perform in

applications where traditional liquid mixed metals are currently used, these new ranges are the latest contribution to Chemtura’s ‘Greener is Better’ theme in new product development. This means that the new mixed metal stabilizers have been screened to ensure they are more sustainable

additive solutions than the products they replace. Mark 800 and Mark 900 products complement Chemtura’s existing REACH friendly stabilizer ranges such as the Mark OBS, Mark EZ and Mark CZ series.Contact: Chemtura CorporationWebsite: www.chemtura.com

New cost effective purging compounds introducedEuropean distribution company Velox has introduced three new cost saving grades of the purge compound ASACLEAN® from Asahi Kasei of Japan. The company says that these new grades have been specifically developed for their high purging power and low residues

while offering significant cost advantages.ASACLEAN C is claimed to be suitable for all thermoplastics in a temperature range of 180-360°C, while ASACLEAN CP is designed to purge all polyolefin’s in a temperature range of 170-300°C. Both grades are neither

abrasive nor corrosive and applicable for colour and material changes, sealing and hot runner cleaning. ASACLEAN CG is a glass filled purging compound for an efficient and quick elimination of heavy contamination or burnt material in the barrel. This grade has the highest purging

power, which means that it can offer a significant economic advantage. The company adds that these three new grades allow a significant decrease in time and material usage during colour and material changes.Contact: VeloxWebsite: www.velox.com