Bio-based plastic additives are becoming increasingly important in terms of sustainability.
Thus, the challenge arises to ensure consistent material properties in a cost-efficient manner without supply gaps.
The lubricant LOXIOL® G 19, a substitute for 12-HSA engineered by Emery Oleochemicals, meets this challenge.
In cooperation with the manufacturer, we carried out a practical test using Brabender analytical equipment. Details on the case study context can be found here. Furthermore, you have the opportunity of downloading the technical documentation.
12-Hydroxystearic acid (12-HSA) is a common PVC lubricant mainly used to disperse inorganic fillers, predominantly chalk, in the PVC matrix. Application is mainly in rigid PVC profiles, pipes and fittings. 12-HSA is sometimes called „the anti plate-out additive“ because of its unique dispersion properties. The only industrial large scale feedstock for 12-HSA is castor oil, which is first hydrogenated and then saponified. Approx. 90 % of the world castor seed production is from India. Approx. 80 % of Indian production is from the federal state of Gujarat. Combining both figures, one can conclude that about 70 % of the world production of castor seed oil is from 1 single Indian state.
This kind of single-sourcing both regarding feedstock and region gave the motivation to look for an alternative lubricant for 12-HSA which is not depending on castor oil. The intention was to substitute the lubricant in the PVC formulation maintaining process and product performance in the model compound and under real conditions at the customer’s application.
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