plasticisers | PVC
into Solutia, from where it moved to Ferro in 2000 and then on to Valtris owner HIG Capital in 2014).
DEHT and DEHP are structural isomers: DEHP is a 1, 2-benzenedicarboxylic acid (ortho position = phthalic acid) esterifi ed with 2-ethylhexanol while DEHT is a 1,4-benzenedicarboxylic isomer (para position=terephthalic acid) Source: Grupa Azoty
Karl Billast, EU/AP business manager for speciality plasticisers, says the Platinum products are similar in performance to benzyl phthalates, but without the regulatory concerns. Santicizer Platinum P-1400, a butyl benzyl cyclohexanoate, was commercialised in the US in 2014. In Europe, it has been PPORD (product and process orientated research and development) regis- tered, which allows for sampling to enable product and process testing. Full REACH registration and subse- quent commercialisation are expected to be fi nalised around the end of this year.
Valtris is already developing the next product in the Platinum family, Billast says. Santicizer Platinum P-1700, a long chain (C12) cyclohexanoate, is expected to be introduced in the US later this year. It offers superior VOC characteristics and will be targeted at specialty automotive and building applications.
“Santicizer specialty plasticisers differ from general purpose plasticisers because of their unique asym- metrical chemical structure of benzyl and alkyl functionality,” Billast says. ”Fast-fusing Santicizer products contribute to energy savings and faster processing thanks to lower fusion temperatures or times.” The asymmetric structure also gives Santicizer products higher polarity and a solubility parameter closer to that of PVC, he says.
Proven advantages
Fast fusing Santicizer products versus general purpose plasticisers , Formulation (100phr PVC, 67phr plasticiser, 3phr stabilizer), Internal mixer (90 RPM, 3°C/min). Source: Valtris Specialty Chemicals
non-phthalate plasticisers. Its formulation is based on Grupa Azoty’s own 2-EH OXO alcohol and purifi ed terephthalic acid (PTA). “It has been positively tested for usage in food packaging and child toys according to European regulations,” Kulik points out. Santicizer plasticisers from Valtris Specialty
Chemicals encompass high solvating benzyl phthalates, fl ame retardant and smoke suppressing phosphate esters, and polymeric plasticisers. The family now also includes the non-phthalate Platinum range of cyclohex- anoate products, which are high solvating and fast- fusing as well (the Santicizer name can be traced back to Monsanto, which put its polymer modifi ers business
32 COMPOUNDING WORLD | August 2016
Perstorp is talking up plasticisers based on C10 chemistry. “On all technical performance parameters, phthalate ester plasticisers based on isomeric C10 alcohols deliver a level of excellence that C8-9 plasticis- ers cannot achieve,” claims Anders Magnusson, Technical Market Development Manager for Plasticisers at the company. He says such plasticisers offer proven advantages in weather resistance, fl exibility and overall wear and tear. This provides sustainable and low maintenance solutions for tough outdoor applications. There are two C10 general purpose plasticisers,
dipropylheptyl phthalate (DPHP)—which Perstorp markets as Emoltene—and diisodecyl phthalate (DIDP). Both provide similar performance properties, with DPHP marginally better in some areas. Magnusson says there are seven key areas where C10 plasticisers can show a clear advantage over their C8-9 rivals: they have lower volatility; an exceptionally low level of water absorption; low fogging; high UV stability (especially DPHP) and ageing performance; very low migration; lower density; and they are non-classifi ed under REACH. Perstorp also offers a non-phthalate general
www.compoundingworld.com
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