TAGS: Sustainability and Bioplastics K Show 2022
At the 22nd international trade fair for plastics and rubber K 2022 WACKER will unveil industrial-grade silicone rubber compounds whose precursors are derived from plant-based raw materials.
Several biomethanol-based product lines under the ELASTOSIL® eco umbrella will be launched, including one liquid and six solid silicone rubber grades, as well as selected SILMIX® silicone rubber compounds.
The use of biomethanol in silicone production helps preserve fossil resources. The K 2022 tradeshow will take place in Düsseldorf, Germany, October 19 – 26.
Mass Balance Approach
The most important raw materials for silicone manufacturing are silicon and methanol.
In 2018, production at WACKER began using methanol generated both from petrochemical as well as from plant-based resources. The amount of the latter, which is known as biomethanol, is mass balanced.
The method that
WACKER employs for these mass-balancing processes is certified at regular intervals by TÜV Nord in accordance with the REDcert
2 standard. This ensures that the amount of eco products sold always corresponds to the amount of biomethanol that goes into the process.
The mass balance approach can also be applied to ready-to-use silicone products. In addition to
silicone rubber, these products contain pigments and other organic additives – additives that can likewise be offset through the use of corresponding amounts of biomethanol.
And speaking of biomethanol: the REDcert
2 standard requires manufacturers to obtain this raw material from renewable resources. The biomethanol that WACKER uses in these processes is derived exclusively from plant residues suitable neither for food production nor as animal feed.
ELASTOSIL® eco Portfolio
WACKER already offers a range of eco-grade silicones. These include silicone fluids, defoaming agents, fabric softeners, silicone release agents and silicone sealants.
The ELASTOSIL
® eco family now presents its youngest members: biomethanol-based versions of several silicone rubber compounds will be available beginning in the fall. The first liquid silicone rubber to leave the starting gate is ELASTOSIL
® eco LR 5040.
The eco version of this extremely tear-resistant, non-postcuring grade will be available for order in six different hardness values. Customers will also have a choice between two lines of solid silicone rubber: peroxide-curing, general-purpose ELASTOSIL
® eco R 401 (hardness: Shore A 40) and addition-curing, exceptionally tear-resistant ELASTOSIL
® eco R plus 4020 solid silicone (Shore A 40).
In addition, WACKER will also be offering biomethanol-based silicone rubber compounds upon request. An ENGEL injection molding machine will be located at the company’s booth during the K 2022 tradeshow to demonstrate how to process the solid silicone rubber compound SILMIX
® eco R plus TS 40002.
“
We can now offer our customers eco versions of two multipurpose solid silicone rubber grades and one non-postcuring liquid silicone rubber for exceptionally sensitive applications,” says Martin Bortenschlager, head of the Engineering Silicones business team EMEA & LATAM.
The silicone expert can also imagine expanding the current eco portfolio. “
Our first step was to demonstrate that we are capable of offering resource-efficient versions of rubber products and of silicone compounds formulated to customer specifications. But that is just the beginning. We can also convert other products over to biomethanol at any time upon request,” adds Bortenschlager.
Making the switch to the new eco product line is straightforward, incidentally. Because methanol and biomethanol are chemically identical, there is no difference between ELASTOSIL
® and ELASTOSIL
® eco products, as Bortenschlager points out. “
If you want to switch to ELASTOSIL® eco you can do so whenever you like without having to run a complex, expensive series of tests. The properties of our biomethanol-based silicones are the same as those of fossil-based products, which means the processing techniques involved are identical, too.”
Explore WACKER's ELASTOSIL® Portfolio
Source: WACKER
