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acrylic alloy finds new application areas
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News
: r de bNack masterbatch is ideal for stretch film
Plasblak® PE4441 is the latest development from Cabot Plastics for high performance stretch and protective film requiring a high degree of weathering resistance and minimal development of perforations and pinholes. Typical applications for the masterbatch include single-layer and multi-layer silage films and stretch wrap. It is compatible with all polyethylene polymers and polypropylene. Cabot Plastics says that the product is a specially formuhted black masterbatch incorporating a high weathering grade of carbon black with a full stabilization package. The quality of the carbon black ensures uniform dispersion within the
processing polymer. This characteristic combined with the stabilization package, results in a high level of UV protection
Translucent co/our masterbatches for packaging A specially designed translucent colour masterbatch series from Clariant Masterbatches Division is finding many applications in the packaging industry for caps, closures, bottles and tubes. Formulated for the personal care and cosmetic industries, the colour masterbatch is suitable for all transparent (polystyrene, polycarbonate, styrene acrylonitrile and polyethylene terephthalate) and translucent (polypropylene and polyethylene) polymers. In addition it can be used for packaging products that
call for the closure, packaging and/or container to feature product visibility for the consumer.
The company says that these cost-effective translucent colour masterbatches provide processors with flexible product properties and lead times, and permit tighter control over colour shades. Custom-tailored colours range from bright primary shades to brilliant fluorescents and, based on customer requirements, may also contain additives such as antistats, UV absorbers and UV stabilizers.
P!astics Additives & ,..ompoundin~June 1999
and good resistance to thermal degradation during processing and the working life. The material has a density of
1130 kg/m3 and melt flow index greater than 50 g/10 min. Addition levels are generally 6.5-8%.
PC/acrylic alloy finds new application areas RTP Company of the USA is using wear additives, flame retardants, EMI shielding, PermaStat ® permanent antistatic protection, and pigments to create application niches for a new series of speciality compounds based on a polycarbonate(PC)/acrylic alloy. While PC/acrylic resin systems are available on the market, the company says that the RTP 1800A series will find applications in portable phone and pager housings, appliance components, toys, pen housings, furniture, automotive components such as mirror frames, medical devices, gears, protective casings and extruded/thermoformed sheet applications. The modified PC/acrylic resin has a superior impact strength
to that of PC in both thin and thick wall sections, but retains the ease of processing associated with acrylic materials and requires reduced cooling/cycle times. The RTP 1800A series has good chemical resistance, particularly to alcohol and lipids and outperforms PC when in contact with fats, oils and alcohols. The material is a natural opaque white, which provides a good base for a wide range of colours. No swirling or knitlines are formed like other alloys or blends. Tensile and flexural strength values are said to be similar to PC and PC/ABS. RTP adds that shrinkage is similar to other amorphous thermoplastics, which enables easy mould conversion.
i
~ ~~~
s
News
: r de bNack masterbatch is ideal for stretch film
Plasblak® PE4441 is the latest development from Cabot Plastics for high performance stretch and protective film requiring a high degree of weathering resistance and minimal development of perforations and pinholes. Typical applications for the masterbatch include single-layer and multi-layer silage films and stretch wrap. It is compatible with all polyethylene polymers and polypropylene. Cabot Plastics says that the product is a specially formuhted black masterbatch incorporating a high weathering grade of carbon black with a full stabilization package. The quality of the carbon black ensures uniform dispersion within the
processing polymer. This characteristic combined with the stabilization package, results in a high level of UV protection
Translucent co/our masterbatches for packaging A specially designed translucent colour masterbatch series from Clariant Masterbatches Division is finding many applications in the packaging industry for caps, closures, bottles and tubes. Formulated for the personal care and cosmetic industries, the colour masterbatch is suitable for all transparent (polystyrene, polycarbonate, styrene acrylonitrile and polyethylene terephthalate) and translucent (polypropylene and polyethylene) polymers. In addition it can be used for packaging products that
call for the closure, packaging and/or container to feature product visibility for the consumer.
The company says that these cost-effective translucent colour masterbatches provide processors with flexible product properties and lead times, and permit tighter control over colour shades. Custom-tailored colours range from bright primary shades to brilliant fluorescents and, based on customer requirements, may also contain additives such as antistats, UV absorbers and UV stabilizers.
P!astics Additives & ,..ompoundin~June 1999
and good resistance to thermal degradation during processing and the working life. The material has a density of
1130 kg/m3 and melt flow index greater than 50 g/10 min. Addition levels are generally 6.5-8%.
PC/acrylic alloy finds new application areas RTP Company of the USA is using wear additives, flame retardants, EMI shielding, PermaStat ® permanent antistatic protection, and pigments to create application niches for a new series of speciality compounds based on a polycarbonate(PC)/acrylic alloy. While PC/acrylic resin systems are available on the market, the company says that the RTP 1800A series will find applications in portable phone and pager housings, appliance components, toys, pen housings, furniture, automotive components such as mirror frames, medical devices, gears, protective casings and extruded/thermoformed sheet applications. The modified PC/acrylic resin has a superior impact strength
to that of PC in both thin and thick wall sections, but retains the ease of processing associated with acrylic materials and requires reduced cooling/cycle times. The RTP 1800A series has good chemical resistance, particularly to alcohol and lipids and outperforms PC when in contact with fats, oils and alcohols. The material is a natural opaque white, which provides a good base for a wide range of colours. No swirling or knitlines are formed like other alloys or blends. Tensile and flexural strength values are said to be similar to PC and PC/ABS. RTP adds that shrinkage is similar to other amorphous thermoplastics, which enables easy mould conversion.