PVC | PLASTICISERS
such, Eastman says there is no need to change formulations or certifications. “Best of all, we offer them at scale—right now,” it claims. Eastman says it will produce the plasticisers using its Carbon Renewal Technology, a chemical — it uses the term ‘molecular’ — recycling technol- ogy that uses hard-to-recycle mixed plastic waste as the raw material and is claimed to reduce consumption of fossil fuels and lower greenhouse gas emissions. The claimed recycled content is achieved through a mass balance allocation process certified by ISCC. “Eastman is just getting started with sustainable plasticisers,” says Henry Li, Market Development Manager Plasticisers Technology. “We’re creating a wide range of plasticisers that could contain even higher percentages of recycled content and an even lower carbon footprint to meet the growing demand for sustainability.”
Low impact chemistry Chemical products from Matrìca, a joint venture between Eni chemical company Versalis (which operates in the basic and intermediates sectors, plastics, rubbers and chemistry from renewable sources) and bioplastics specialist Novamont, are derived entirely from renewable sources. Matrìca makes use of what it describes as low-environmental- impact technology that enables the transformation of vegetable oils into mono and dicarboxylic acids and esters. Applications span biopolymers, biolubricants, cosmetics and animal feed, as well as plasticisers. The company recently developed new aliphatic diesters with a high renewable content that it says show very interesting properties when considered as PVC plasticisers as an alternative to traditional phthalates. They are said to provide “excellent” compatibility and plasticising efficiency with PVC, especially where very good low temperature performance is required. The products are also said to show better migration resistance and less extractability than other aliphatic diesters. At Belgium-based Proviron, which develops
and produces chemicals mainly for medium-vol- ume niche markets, Proviplast Plasticiser Business Manager Koen Engelen says development of a bio-based plasticiser range continues. “We are getting good results to replace DINP, DOTP and DINCH in traditional applications like flooring and coated textiles with a modified epoxidised plasti- ciser,” he says.
“Since the beginning of this year, we have seen a change of mindset at many companies, and we see more commitment to really start this change for more sustainability and reducing carbon footprint.
32 FILM & SHEET EXTRUSION | September 2021
Figure 1: Efficiency of Eastman 168 Renew 20 plasticiser determined by Shore A durometer measurement compared with existing Eastman 168 grade and DOP and DINP (60 phr addition) Source: Eastman
A few years ago, only R&D people were really interested, but we now also notice that many companies are changing their strategy to go for more ‘green’,” he says. “We are also finishing tests with a product that can withstand the most de- manding requirements for applications in automo- tive (low VOC, fogging, colour stability). We expect this product to be available in 2022.”
Bio-based approval The Santicizer Platinum G-2000 plasticiser from Valtris, an epoxy soyate ester with 85% certified biobased content, has recently gained the US Department of Agriculture (USDA) Certified Biobased Product label. “Santicizer Platinum G-2000 is an excellent general purpose plasticiser with performance comparable to other non-phtha- late general purpose plasticisers such as DOTP or DINCH,” says Mark Holt, Business Director, Polymer Modifiers at Valtris. Holt says that, along with the significantly bio-based content, the G-2000 grade also offers good processing performance, low temperature properties, and very good heat stability. Formula- tors can combine it with other Santicizer Platinum grades in their recipes. Away from the bioplasticiser sector, Valtris also
recently launched Santicizer Platinum P-1800, the latest addition to its line of non-phthalate fast-fus- ing plasticisers. Based on cyclohexanoate technol- ogy, it is said to combine high solvating ability with low volatility and excellent migration resistance. “Santicizer Platinum P-1800 can lower both
formulation and production costs while improving final product properties,” says Holt. “Formulators
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