MATERIALS
Contact: Prisma Colour Ltd, Marple Rd, Glossop SK13 5DH, UK. Tel: +44 1457 856505, Web: www.prismacolour.com
Dover Chemical receives FDA clearance for thermal stabilizer
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hio-based additives and paraffins producer Dover Chemical Corp has received food contact clearance from the US Food and Drug Administration (FDA) for Doverphos® LGP-11 antioxidant as a thermal stabilizer in single- and repeated-use linear low density polyethylene (LLDPE) films and high density polyethylene (HDPE) articles. The approval covers contact with all food types under Conditions of Use A through H as defined by the Federal Food, Drug, and Cosmetic Act, at loading levels in the polymer of up to 2000 ppm. Introduced at K 2010 [ADPO, December 2010], Doverphos LGP-11 is a proprietary high molecular weight phosphite that is suitable as an alternative to TNPP (trisnonylphenyl phosphite), or any other phosphite additive, in any polyolefin application, according to Dover Chemical. The antioxidant is also recommended for use in other resin systems such as styrene-butadiene-styrene, styrene-butadiene rubber, urethanes and polyvinyl chloride. The company claims that Doverphos LGP-11 is unique in that it contains no alkylphenol components, has superior colour hold, has low migration due to its polymeric nature and is composed of biodegradable raw materials. ‘The fact that LGP-11 is not produced from alkylphenols provides benefits that are unprecedented by any other phosphite on the market today’, notes Dr Mick Jakupca, director of R&D at Dover Chemical. Most antioxidants are composed of or contain alkylphenols, a general class of chemicals that are a focus of both consumer and regulatory organizations. Doverphos LGP-11 was engineered to offer the global plastics market a viable long-term alkylphenolfree alternative chemistry, Jakupca explains. ‘The polymeric nature of this product has routinely demonstrated in laboratory and large-scale testing the reduction and/or elimination of plateout and blooming of the antioxidant in blown and cast film applications, which has been an industrywide problem for decades’, he reports. Doverphos LGP-11 is part of Dover Chemical’s alkylphenol-free Liquid Green Chemistry platform, which the
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Additives for Polymers
company and many of its customers believe ‘is a paradigm leap forward for the future of antioxidant systems for all polymers globally’, according to Matthew Fender, business manager of Polymer Additives. ‘Doverphos LGP-11 was designed to meet long-term global market needs and receiving full FDA clearance is certainly an important milestone for all of us’, Fender adds. Dover Chemical, a subsidiary of New York-based ICC Industries Inc, is a producer of polymer additives, liquid and solid chlorinated paraffins, liquid and solid antioxidants (including organophosphites), flame retardants and additives for water-based or oil-based coatings and metalworking fluids. Its polymer additives range includes the Doverphos and Doverphos HiPure brands of antioxidants, Doverguard flame retardants and Paroil non-phthalate plasticizers. The company sells its products in the USA and Canada from its headquarters location and to the rest of the world through ICC Trading. Contact: Dover Chemical Corp, Dover, OH, USA. Tel: +1 330 343 7711, Web: www.doverchem.com
Evonik reveals developmental surface-treated grade of fumed titanium dioxide
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peciality chemicals company Evonik has introduced its latest developmental titanium dioxide (TiO2) grade, VP NKT 65. Described as a novel hydrophobic sub-pigmentary fumed TiO2 grade, the new granulated product is surface-treated with an alkylsilane to make it more stable and dispersible. The company is targeting a range of application areas for the new grade, from toners and polymer powders to optoelectronics. Evonik is a leading producer of sub-pigmentary fumed TiO2 with a global production footprint and a broad lineup of grades, including surface-modified and granulated TiO2 products as well as dispersions. The latest addition to its product portfolio, VP NKT 65 has been primarily developed as a cost-efficient additive to improve the flow and charge properties of toner, plastics and polymer powders, the company explains. In particular, it provides good charge stability to toner formulations under different environmental conditions, it says. VP NKT 65
September 2015
STRATEGIES
is characterized by a weak negative triboelectric charge. Furthermore, the new grade is reported to show excellent dispersibility and prevents caking of dry toner and other powder formulations. Other applications for VP NKT 65 could include UV filters and/or refractive index modulators for optoelectronic applications, displays and films, according to Evonik. The company says that the developmental product complements its existing wellestablished fumed TiO2 grades, such as Aeroxide® TiO2 P 25, Aeroxide TiO2 T 805 and Aeroxide TiO2 NKT 90. In other materials-related news, Evonik has recently demonstrated, for the first time in a pilot plant, that innovative supported ionic liquid phase (SILP) catalyst systems can work reliably for about 2000 hours. The high service life is important proof that these economically and ecologically interesting catalyst systems can be used on an industrial scale, the company says. The new SILP catalyst systems are reported to combine the advantages of homogeneous and heterogeneous catalysts. Evonik scientists have been exploring the use of SILP catalysts in hydroformylation, the industrially important reaction used to generate aldehydes from olefins and syngas. Among other things, aldehydes are a precursor for plasticizer alcohols; Evonik is the largest producer of C9/C10 plasticizer alcohols in Europe. Contact: Evonik Industries AG, Essen, Germany. Tel: +49 201 177 3333, Web: www.evonik.com
AF Color receives OK Compost certification
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asterbatch producer AF-Color, a branch of German company Akro-Plastic GmbH, reports that it has successfully completed Vinçotte certification of its AF-Eco® masterbatch range, earning ‘OK Compost’ approval. The certified masterbatches are designed to add colour to biodegradable plastics without impacting their compostability. Tests showed that the carrier matrix used by AF-Color in its colour masterbatches fully degrades within 12 weeks, the company reveals. The range also meets the relevant DIN EN 13432 limits for heavy metals in packaging and for organic pigments in biodegradable applications, it says. ‘We can now manoeuvre freely within the
September 2015
certified pigment pool to realize any number of different Vinçotte-certified colour adjustments in a range of colours and blacks’, comments Dirk Schöning, AF-Color’s sales and distribution manager. Contact: AF-Color, Industriegebiet Scheid 27, 56651 Niederzissen, Germany. Tel: +49 2636 8092 0, Fax: +49 2636 8092 31, Email:
[email protected], Web: www.af-color.com
COMPANY STRATEGIES ...Continued from front page It generated sales of $2 billion in 2014 [ADPO, March 2015]. (By way of comparison, Brussels-based Solvay employs about 26 000 people in 52 countries and generated E10.2 billion in net sales in 2014.) Cytec sources almost half of its sales from North America, nearly a third from EMEA and the remainder from Asia Pacific and Latin America. In the fast-growing composite materials sector, which represents two thirds of its sales, its principal market is primary and secondary structures for aircrafts. It is also developing new technological applications for composites in the automotive sector. Through the acquisition of Cytec, Solvay says it will gain critical scale and ‘immediate customer intimacy’ in aerospace. In the automotive market, Solvay’s strong positions with original equipment manufacturers and tier-one suppliers will help bolster Cytec’s growth. According to Solvay, Cytec will also significantly reinforce its sustainability profile. Cytec’s composites businesses will be integrated into Solvay’s Advanced Materials operating segment. Its mining chemicals as well as its niche additives (including its polymer additives offerings) and phosphine speciality chemical businesses will become part of Solvay’s Advanced Formulations segment. Commenting on the transaction for Cytec, CEO Shane Fleming says that the company is excited to be joining a preeminent global chemical company with leading market positions and a similar growth strategy to its own. ‘Their strategic focus is perfectly aligned with our businesses, while the technology synergies with their speciality polymers and formulations expertise should accelerate our growth. Our customers and our employees should expect to see continuity and strong support of our current strategy’, Fleming asserts. In the run-up to the merger announcement, Cytec reported its 2Q 2015 results, with net earnings of $54.7
Additives for Polymers
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