ADDITIVES | PIGMENTS
Right: Black packaging for Henkel using NIR detectable pigments from Ampacet
red pigment has high light and weather-fastness at low concentrations, which makes it useful in durable goods, while its high temperature and processing stability means it can be used in engineering plastics. Dark-coloured Shepherd Color Arctic IR Reflec- tive pigments have a low absorbance and high reflectance in the IR range, which allows IR sensors to sort the plastics, the company claims. These pigments have long been used in energy saving, cool-roof applications but are now said to be finding use in making black plastics that can be recycled. Clariant has developed new carbon black-free
colorants for plastics – including polyolefins, PET, and PA – that can be identified by NIR sorting devices. The development of the CESA-IR master- batches included extensive testing by Tomra Systems, a developer of NIR sorting technology got the plastics recycling sector. PolyOne’s offering in this sector is OnColor
Infrared Sortable Black. The company has a range of eight shades which are available in both liquid and solid forms. It can also provide custom colour shades. Gabriel-Chemie’s NIR-reflective master- batch is said to carry food contact approval and to have minimal impact on mechanical performance. Ampacet’s REC-NIR-BLACK masterbatch is being used to produce black packaging for consumer goods firm Henkel.
Below: Automated pigment
stability testing in the Lanxess technical centre at Krefeld- Uerdingen
Meeting demand Citing increasing demand, Lanxess completed a debottlenecking of its Krefeld-Uerdingen site in Germany this year, expanding annual capacity for its Bayferrox and Colortherm micronised red pigments by more than 5,000 tonnes. The com- pany also expanded its technical center at the site and added automated testing to meet an expected increased testing requirement. “The facility is now
equipped to carry out automated measurements of thermal stability in customer-specific plastics applications. From sample-loading to colorimetric analysis, all the necessary modules can be actuated via automated processes,” says Stefano Bartolucci, Global Market Segment Manager for Plastics in the Lanxess Inorganic Pigments business unit. Automated processes improve testing accuracy as well as speed, according to the company, which says the lab can carry out application testing of pigments in a wide range of plastics. It also has equipment to test pigments for colouring of filaments for 3D printing. Pigments for these filament applications need to be easy to disperse and fast to achieve colour strength. Inorganic pigments provide high temperature and weather stability compared to organic pigments in filament formulations, says Bartolucci, while iron oxides can be used to partially reduce organic pigment content. Among the latest additions to the Lanxess pigment range is Bayferrox 303T black, which is said to reflect 20% more NIR radiation than conventional products and is intended for use in plastic roofs and façade elements to reduce heat buildup due to solar radiation. It can also be used in automotive interiors to reduce heat develop- ment in the passenger compartment.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.sunchemical.com �
www.shepherdcolor.com �
www.colors-effects.basf.com �
www.ferro.com �
www.dominioncolour.com �
www.clariant.com �
www.polyone.com �
www.gabriel-chemie.com �
www.ampacet.com �
www.lanxess.com
22 COMPOUNDING WORLD | September 2019
www.compoundingworld.com
PHOTO: LANXESS
PHOTO: HENKEL
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106
