PVC | PLASTICISERS
DEHP – a regulatory update
“Authorisation for use of DEHP in producing original PVC compounds and articles has been recommended by ECHA…and while official confirmation by the European Commission is still pending, the substances can currently be safely used in those applications for which an Authorisation request was submitted,” according to European Plasticisers. Restrictions on DEHP and the three other LMW phthalates under the legislative microscope allow for continued use in outdoor applications where there is not prolonged contact with skin. There are also exemptions for industrial and agricultural applications, as well as spare parts for aircraft and motor vehicles. The recycling of flexible vinyl
containing DEHP has also been authorised for several companies and recently ECHA has recommended re-authorisation of such recycling, European Plasticisers says. The PVCMed Alliance, which is part of the European Council of Vinyl Manufactur- ers (ECVM), points out that, for example, 14 National Health Service Trust (NHS) hospitals in the UK partici- pate in the RecoMed take-back scheme for disposable non-infectious PVC medical devices. Within this, hospitals collect PVC oxygen masks, oxygen tubing and IV bags, which is turned into tree ties for the horticultural industry. Not everything in PVC recycling is working well, though. In June, VinyLoop Ferrara closed its plant in
noted a wide range of demands to justify the development of two general-purpose and two niche plasticisers. It is now launching a valerate plasticiser and an improved epoxidised plasticiser.” The valerate plasticiser is for applications where
Below: Shoes with a 64% bio-based PVC sole compound developed by CYGSA using Varteco
plasticisers as part of the Bioviplas project
weatherability and hydrolytic stability are critical – in outdoor decorative film, for example. The upgraded epoxidised plasticiser is dedicated to indoor applications. It can be used in calendering or flexible profiles. “Besides being renewable, this epoxidised plasticiser delivers outstanding long-term stability and eases recycling, a main trend to lower the environmental footprint,” Engelen says. Proviron is now also finalising the development
of a medical citrate and a low-viscosity polymeric plasticiser, Engelen adds. “The medical citrate plasticiser aims to broaden the availability of this technology and to decrease the use of DOP in medical applications,” he says. “The low viscosity polymeric plasticiser delivers an optimised solution combining fat/oil extraction resistance and “manageable” viscosity for plastisol-coating processes.” Argentinian chemical firm
Varteco worked with Spain-based Shin-Etsu group
PHOTO: VA 28
company Compuestos y Granzas (CYGSA) in the Bioviplas project to develop a PVC shoe sole compound with
COMPOUNDING WORLD | August 2018
Italy that was recycling PVC cable sheathing and tarpaulins. The com- pany, a joint venture between Inovyn and Texyloop, was established 15 years ago. The decision to close the plant was, according to the owners, was due to the collapse in the demand for regenerated material due to restrictive rules imposed on the use of products containing DEHP. VinyLoop Ferrara used a selective dissolution process that eliminated foreign materials (metals, fibres), but not the plasticisers and additives present in the PVC. Authorisation for the plant was due to expire at the beginning of 2019. �
www.europeanplasticisers.com �
www.pvc.org/en/p/ecvm
a 64% renewable carbon content as certified in accordance to the USDA Biopreferred Program. The project, completed at the end of last year, used Varteco’s V-Ziclus GP bio-based plasticiser, which is derived mainly from epoxidised soybean oil. Epoxidised soybean oil also forms the base for a new generation of bio-based plasticisers from Brazil’s Nexoleum Bioderivados. The Nexo B5, MB25 and MB50 products are said to offer visocisty and compatibility to allow them to replace DOP and DINP in emulsion and suspension PVC formulations (Figure 7). Nexoleum opened a subsidiary in the Netherlands in June and is in the process of REACH registering the new products. It hopes to complete that before the end of 2019.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.echa.europa.eu �
www.evonik.com �
www.exxonmobilchemical.com �
www.europeanplasticisers.eu �
www.basf.com �
www.eastman.com �
www.lanxess.com �
www.emeraldmaterials.com �
www.emeryoleo.com �
www.skz.de/en �
www.proviron.com �
www.varteco.com.ar �
www.cygsa.es �
www.nexoleum.com
www.compoundingworld.com
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