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New pigments from Clariant
7
i'
Materials
News
New pigments from Clariant
Products madewith pigmentsfrom Clariant.
Clariant has added three new products to its existing range of pigments and improved two others. PV Fast YellowH2GR VP 2293 is a Pigment Yellow 191 and an assodate product m the established PV Fast YellowHGR, but exhibits a greener shade and has 25% more colour strength while having similar fastness properties and is suitable in a wide range of thermoplastics. The pigment can be used for processing in sheet, film and spin-dyeing applications. Graphtol Yellow H2R VP 2284 is a Pigment Yellow 139
that is specifically targeted at the film and fibre segments as a heavy metal Diarylide replacement. Clariant says that it has high colour strength, good fastness properties and is easily dispersed. PV Fast Pink E is the first of a new generation ofquinacridone pigments that retain the excellent fastness and heat stability of a traditional Pigment Red 122 but offers a level of dispersibility not previously available to the plastics industry. The company says that it is recommended for spin-dyeing, film and thin-wall injection
moulding applications. Another development of this technology is PV Fast Violet ER VP 2223, which is a Pigment Violet 19 with excellent dispersion characteristics, heat stability and lightfasmess properties suitable for a wide range of colouring applications, claims Clariant. It is also recommended as a replacement for thioindigo pigments in PVC applications. Finally, Clariant says that PV Fast Green GNX is a Pigment Green 7 with optimized dispersion properties and a good price/performance ratio.
Albemarle makes improvements to one-pack antioxidant US company Albemarle has improved its Ethanox 330 antioxidant, making it more free flowing and creating less dust. The company supplies the material as a one-pack antioxidant blend that can contain muhiples additives,
difficult to handle liquids and low melting point solids. Phenolics, phosphites, acid neutralizers and clarifiers can all be added, even in low quantities. Albemarle adds that the granules and pellets can reduce
labour costs and improve plant hygiene. Additional benefits include a simplification of the quality control process and a reduction in compounding errors and variability-.
Plastics Additives & Compounding June 1999
10
Siloxane
masterbatches improve filler dispersions in polyolefins Significant rheological advantages are daimed by Dow Coming for its MB50 Series Siloxane Masterbatches when used as additives in compounding. The effects are particularly noticeable for flame retardant filler aluminium trihydroxide (ATH). Dow Coming has undertaken research to compare the efficiency of silicone and organic lubricants as additives to improve the dispersion of mineral fillers in polyolefins. MB50 Series Masterbatches and calcium stearate were used as the additives. Low density polyethylene was used as the base polymer and calcium carbonate as a general purpose filler, while ATH was used as the flame retardant filler. The company says that the results show that 3% of MB50 Series Masterbatches produced a t7% reduction in peak torque with calcium carbonate and 23% with ATH. Calcium stearate had no observable effect on peak torque with calcium carbonate and only a 6% reduction at its highest loading with ATH. Dow Coming adds that these results follow tests on the action of MB50 Series Masterbatches as additives to unfilled polyolefins. These tests revealed large reductions in torque and elongation viscosity with practical benefits in both extrusion and injection moulding.
i'
Materials
News
New pigments from Clariant
Products madewith pigmentsfrom Clariant.
Clariant has added three new products to its existing range of pigments and improved two others. PV Fast YellowH2GR VP 2293 is a Pigment Yellow 191 and an assodate product m the established PV Fast YellowHGR, but exhibits a greener shade and has 25% more colour strength while having similar fastness properties and is suitable in a wide range of thermoplastics. The pigment can be used for processing in sheet, film and spin-dyeing applications. Graphtol Yellow H2R VP 2284 is a Pigment Yellow 139
that is specifically targeted at the film and fibre segments as a heavy metal Diarylide replacement. Clariant says that it has high colour strength, good fastness properties and is easily dispersed. PV Fast Pink E is the first of a new generation ofquinacridone pigments that retain the excellent fastness and heat stability of a traditional Pigment Red 122 but offers a level of dispersibility not previously available to the plastics industry. The company says that it is recommended for spin-dyeing, film and thin-wall injection
moulding applications. Another development of this technology is PV Fast Violet ER VP 2223, which is a Pigment Violet 19 with excellent dispersion characteristics, heat stability and lightfasmess properties suitable for a wide range of colouring applications, claims Clariant. It is also recommended as a replacement for thioindigo pigments in PVC applications. Finally, Clariant says that PV Fast Green GNX is a Pigment Green 7 with optimized dispersion properties and a good price/performance ratio.
Albemarle makes improvements to one-pack antioxidant US company Albemarle has improved its Ethanox 330 antioxidant, making it more free flowing and creating less dust. The company supplies the material as a one-pack antioxidant blend that can contain muhiples additives,
difficult to handle liquids and low melting point solids. Phenolics, phosphites, acid neutralizers and clarifiers can all be added, even in low quantities. Albemarle adds that the granules and pellets can reduce
labour costs and improve plant hygiene. Additional benefits include a simplification of the quality control process and a reduction in compounding errors and variability-.
Plastics Additives & Compounding June 1999
10
Siloxane
masterbatches improve filler dispersions in polyolefins Significant rheological advantages are daimed by Dow Coming for its MB50 Series Siloxane Masterbatches when used as additives in compounding. The effects are particularly noticeable for flame retardant filler aluminium trihydroxide (ATH). Dow Coming has undertaken research to compare the efficiency of silicone and organic lubricants as additives to improve the dispersion of mineral fillers in polyolefins. MB50 Series Masterbatches and calcium stearate were used as the additives. Low density polyethylene was used as the base polymer and calcium carbonate as a general purpose filler, while ATH was used as the flame retardant filler. The company says that the results show that 3% of MB50 Series Masterbatches produced a t7% reduction in peak torque with calcium carbonate and 23% with ATH. Calcium stearate had no observable effect on peak torque with calcium carbonate and only a 6% reduction at its highest loading with ATH. Dow Coming adds that these results follow tests on the action of MB50 Series Masterbatches as additives to unfilled polyolefins. These tests revealed large reductions in torque and elongation viscosity with practical benefits in both extrusion and injection moulding.