PVC | PLASTICISERS
Table 1: Representative data for medical grade PVC films comparing Citroflex B-6 plasticiser from Vertellus with DEHP. Formulation comprises 50 phr plasticiser, 2.5 phr stabiliser, 0.25 phr lubricant.
Hardness, Shore A Tensile Strength, MPa Ultimate Elongation, % 100% Modulus, MPa Brittle Point, °C
Volatile loss (air), % Volatile loss (A/C), %
Soapy water extraction, % Source: Vertellus
DEHP 79
18.95 395 9.43 -24.5 4.8 3.4 2.7
Citroflex B-6 81
20.16 427 9.39 -33.5 1.7 1.4 2.2
2017/745), as well as Amendment Annex XIV per ECHA REACH mandates, use of DEHP will require authorisation based on Benefit Risk Assessment, thereby complicating supply and prolonging the path to product commercialisation,” the company claims. “Medical PVC compounders and blood transfusion product brand owners are now prepar- ing for next-generation products, fast-tracking the development of alternative, phthalate-free tech- nologies.” Citroflex B-6 is a butyryl trihexyl citrate (BTHC), which is listed in the European Pharmacopoeia as an approved alternative to DEHP for medical products. Vertellus says it enables brand owners to comply with various regulatory mandates — not only the MDR and REACH Regulations but also RoHS EU Directive 2015/863 (RoHS 3). PVC films plasticised with Citroflex B-6 are said to display similar physical properties to those containing DEHP – Figure 4.
Combined efforts With considerable experience in the bio-based plasticisers market in the US and South America, Innoleics USA and Varteco have recently agreed to combine their efforts to introduce Innoleic bio-based primary plasticisers into the European, North African, and Middle Eastern markets. Innoleics has plasticiser production agreements
Figure 4: Dynamic rheology temperature ramp data for PVC films containing Citroflex B-6 from Vertellus against other commonly used plasticisers. Formulation comprises 70 phr plasticiser, 2.5 phr stabiliser, 0.25 phr lubricant. Source: Vertellus
with third parties in South America and offices in the US and Europe. Its Innoleic plasticisers are acetylated and epoxidized soybean oil fatty acids esters with a high bio-based carbon content (as determined by 14C analysis and certified under the USDA BioPreferred programme).
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RESISTANCE. THE TOUGHEST FOR ALL NEEDS.
ELATUR® DINCD is an innovative low-viscosity plasticizer with excellent low-temperature fl exibility and very low volatility, which is particularly suitable for demanding applications.
Contact us for more information:
elaturdincd@evonik.com
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