MATERIALS | PLASTICISERS
Right: Cargill’s Bioverobio- based
plasticisers target flooring applications
temperatures in comparison to competing general-purpose formulations, as well as improved thermal stabilisa- tion due to their inherent epoxy groups. The company says the formula- tions allow for the com- plete replacement of ESO as a co-stabiliser, which it says simplifies the formula- tion and reduces raw material inventory and SKUs. Both grades are claimed to
provide an improved dry-up time in suspension PVC compounds and a reduced carbon footprint. The materials are also said to offer increased throughput, which can reduce unit manufacturing costs, and to allow lower oven temperatures which can reduce energy costs. When used as a replacement for petroleum- based GP plasticisers, Innoleics says the new grades can impart increased clarity and surface gloss to the finished product. The company says GPe 9 is a slightly lower cost
grade intended for use in applications where characteristics are not critical. It presents reason- able mass loss in comparison with petroleum- based general-purpose plasticisers but higher volatility is said to make it most suitable for less volatility-sensitive applications. In addition, the slightly higher viscosity aging may require formula- tion adjustments for plastisols, the company says. GPe 10 is said to present good viscosity and oven ageing performance, with improved low
temperature flexibility. Innoleics says it offers similar volatility and viscosity aging when compared to petroleum-based GP plasti- cisers, allowing it to provide similar service life in final products with little need for formulation adjust- ments. In addition, it has improved low-temperature flexibility.
Bio-based solutions
US-headquartered agri-products group Cargill is steadily making a name for itself in bio-based feedstocks
through both technical innovation and acquisition. In 2021 it expanded its plasticisers group with the acquisition of Arkema’s epoxides business, which included a manufacturing facility at Blooming Prairie, MN, US, specialising in epoxidised vegetable oils. Epoxidised vegetable oils are key components in
Cargill’s own bio-based plasticisers and polyols. “Adding this capability will allow us to innovate across the polyol value chain, transforming our vegetable oil into highly functional compounds that bring benefits like flexibility, durability and heat stability to a wide range of industrial products,” said Kurtis Miller, Managing Director of Cargill’s bioin- dustrial business, when the purchase was announed. The deal also included Arkema’s Vikoflex and
Figure 1: Efficiency curves for Biovero FL-200 compares with DOP, DINP, DOTP (samples aged at 50°C for 7 days; hardness normalised to 60 Shore A) Source: Cargill
24 COMPOUNDING WORLD | August 2023
Vikolox family of epoxidised vegetable, soybean and linseed-oil grades, as well as the Vikopol epoxidised polybutene used as an adhesive and epoxy enhancer and Vikinol aliphatic diols. The materials are now incorporated into Cargill’s Bioindustrial portfolio. Cargill further expanded its bioindustrial solutions with its new Biovero bio-based plasticiser, which is designed primarily for extruded and calendered flooring products but can be used for a variety of other PVC manufacturing applications, including production of fabrics, wires, cables and plastic films and sheets. The Biovero FL-200 grade is derived from feedstocks sourced from bio-based materials and is a non-phthalate plasticiser that can provide cost savings and performance benefits, according to Cargill. It is said to offer low extractability, can achieve required flexibility at lower loading levels, provides faster processing and line speeds, supports lower processing temperatures, and is more resistant to degradation from heat exposure (Figure 1). The company says the plant-based plasticiser can allow manufacturers to produce
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