search.noResults

search.searching

dataCollection.invalidEmail
note.createNoteMessage

search.noResults

search.searching

orderForm.title

orderForm.productCode
orderForm.description
orderForm.quantity
orderForm.itemPrice
orderForm.price
orderForm.totalPrice
orderForm.deliveryDetails.billingAddress
orderForm.deliveryDetails.deliveryAddress
orderForm.noItems
PIGMENTS | TiO2 DEVELOPMENTS


Photos taken with a DSA100 Drop Shape Analyzer show drops of water deposited onto TiO2 particles with hydrophilic (left) and hydrophobic (right) surfaces


Source: RD Titan Group Innovative TiO2


a primary requirement. Made in a process that uses selected organic


and inorganic treatments, Tioxide TR48 pigment “delivers a range of excellent processing and performance properties,” Venator says. In ABS, for example, it can enable the production of brighter, whiter parts with reduced susceptibility to yellow- ing, even when processed at or exposed to high temperatures. “This feature is a major benefit in the consumer electronics industry where there is high demand for bright, white electronic devices and matching charging accessories including head- phones, plugs and sockets,” Venator says.


Cutting costs RD Titan Group Innovative TiO2 has some interesting news, not only for compounders, but for budding TiO2


producers too. Company co-founder


Below: Hydrophobic TiO2


dis-


charged from the RD Titan Group process does not wet and floats on water


and director Andriy Gonchar says that most TiO2 grades for plastics are made hydrophobic by


surface treatment of the particles using special organic additives. Such hydrophobic treatment provides improved wettability in melts of non-polar polymers, ensures their better dispersion, and also provides the preparation of less viscous mixtures of the molten polymer and the pigment. The substances used for TiO2


hydrophobisation


can be divided into two types: additives that are physically adsorbed onto the particles surface (polydimethylsi- loxanes, for example), or additives which chemically interact with the surface (such as egg, silane, phosphonic acids). Additives of the first type have one common drawback - during the mixing of the pigment with the polymer melt, they tend to desorb from the surface particles and migrate, resulting


of TiO2 I N N O 30 in the effect of a “greasy” surface of the COMPOUNDING WORLD | October 2018


pigmented polymer material. In this regard, the use of the second type additives for TiO2


tion is more preferable, because they don’t desorb from surface of TiO2


grades of the world’s leading TiO2


particles. Most hydrophobic producers are


treated with additives of the second type. Pigment manufacturers can use different methods of applying hydrophobic coatings. RD Titan Group Innovative TiO2


hydrophobisa-


has developed a “dry”


application technology for the production of “Plastics Type 1” grades (designed for maximum processability). The latest development from the company, working with Swiss candle filter manufac- turer Dr Mueller, is a “wet” technology that allows treatment of the TiO2


in an aqueous suspension,


after which (using a specially designed candle filter) the thermal exposure necessary for hydrophobisa- tion and simultaneous drying of the pigment to a moisture content of less than 0.2% is performed. This technology allows effective hydrophobisa-


tion for the production of all three types of TiO2 grades for plastics. Conventional expensive equipment (filter presses and dryers) can be excluded, significantly reducing capital costs compared to traditional techniques. The technol- ogy can be easily implemented at plants currently not producing hydrophobic TiO2


grades. Stretching it out


An obvious way for compounders to bring down cost when using TiO2


is to add less of it. “TiO2 can


be partially replaced using extenders to reduce costs and beneficially, the carbon footprint of the end product,” says Tony Bruce, Business Develop- ment Manager, Performance Chemicals at Cor- nelius. “We believe TiO2


market due to continuing long term market


extenders, manufactured


by our partners VB Technochemicals and Evonik Silica Finland, will always have a part of play in the TiO2


volatility. Extenders will generally offer a cost saving to a customer’s inventory so regardless of a TiO2


shortage, incorporating them can be win : win www.compoundingworld.com


P


H O


TO: R


2


D T I


IO


TA N


E T


GR IV


OU P V AT


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