January I994
Additives for Polymers
WATERWAYS Brominated phosphate fire retardant FMC Corporation has announced the commercialization of its brominated aromatic phosphate ester fire retardant, which is designated Reoflam PB-460. The company say that it is unique in that it is the only co~erciaIly available flame retardant to combine both bromine and phosphors in the same molecule. The synergy achieved through the combination of these two fire retardant elements results in superior flame suppression while significantly enhancing the opportunities for design flexibility. The brominated phosphate is non-volatile and does not plate out even at the high processing temperatures of engineering plastics. Use of the additive can reduce, or even eliminate, the need for ~timony oxide in many polymers, resulting in enhanced mechanical properties. Reoflam PB-640 is melt bIendable, readily dispersed, and improves processability, clarity, colour stability, and toughness. It has been developed for application in engineering thermoplastic parts used in computers, aviation/aerospace, electrical/electronic, automotive, appIi~ce and consumer product areas. PET fibres and textiles have also been made using PB-460. Contact: FMC Corporation (UK) Ltd, Process Additives Division, Tenax Road, Traflord Park, Manchester, MI 7 I WT, UK. Tel: +4461-872-2323. Fax: i-44-61-873-7271.
Stabilizers for PVC Elf Atochem in the UK is actively deveIoping a new generation of PVC stabilizers for a range of PVC applications. A number of additions have recently been made to the Savinor range of calcium zinc and octyl and butyl tin stabilizers. Calcium zinc stabilizers figure prominently in the Elf Atochem portfolio of plastics additives with the launch of several new grades for the flexible and rigid vinyls markets. New additions offer 2
improved tr~sp~ency, colour retention and long term stabili~ for calendering, extrusion, injection moulding and plastisol applications. Newly developed octyl and butyl tin stabilizers offer specific advantages to the processing and performance of PVC compounds for use in rigid, semi-rigid and plastisol applications. Contact: ElfAtochem UK Ltd, Colthrop Way, Thatcham, Newbury, Berkshire, RG13 4LW, UK. Tel: ~44-635-87~. Fax: +44-63587~50.
Co-stabilizers for PVC Rhone Poulenc’s Speciality Chemicals Sector has introduced two co-stabilizers for PVC: Rhodiastab X2 and Rhodiastab X5. The first is designed for non-food soft PVC products and is in liquid form. ~odiastab X5 is specific to technical applications of rigid PVC, such as window frames and PVC tubing. Contact: Rhsne Poulenc UK Ltd, Oak House, Reeds Crescent, Watford, WDI lQH, UK. Tel: + 44-923-21 I 700. Fax: -t-44-923211580.
Colour concentrates for PET Wilson Color in Belgium has expanded its range of colour concentrates for blowmoulded applications. These include PET bottles for beverages, cosmetics and chemicals. These concentrates are designed to be used at low addition levels, depending on the colour which needs to be matched. Typical values are 0.5 to 1% for transparent shades and l to 2% for solid colours. Most colours are available as standard and all special colour requirements are matched by experienced colour specialists in the company’s fully equipped laboratory in Assesse, Belgium, which received IS09002 accreditation in 1992. Contact: Wilson Colour SA, Rue Melville
a1994 Elsevier Science Ltd