Press release Evonik

by | 13.12.2023 | Coating technology

Evonik and SI Coatings develop water-based primer for polyamide coatings

  • Labeling requirement for chemicals according to the GHS system no longer applies
  • Easy to use for greater work safety
  • Available for customers worldwide

Essen/Marl. Evonik Industries and SI Coatings GmbH, Wuppertal, have jointly developed a water-based primer for the pretreatment of steel prior to fluidized bed coating with VESTOSINT® polyamide 12 powder. Such polyamide coatings on metal are used for corrosion protection. It is therefore important that these are applied without gaps, do not flake off and cannot be infiltrated by water. They must also be robust against external influences so that the coating provides lasting protection. VESTOSINT® polyamide 12 fluidized bed powders from Evonik have proven their efficiency here for many years. In the past, large-area, particularly concave steel parts were pre-treated with solvent-based primers if exceptional adhesive strength was required, for example in contact with water.

Reliable and sustainable

“Evonik has firmly anchored the concept of environmental compatibility in its corporate strategy. That’s why we were looking for a partner for the processing of VESTOSINT® with whom we could develop a water-based primer that is precisely matched to our polyamide powder. We found this partner in SI Coatings,” says Dr. Dominic Störkle, Head of the Additive Manufacturing & Material Solutions Product Line at Evonik, describing the motivation behind the collaboration. Evonik’s many years of expertise in fluidized bed coating with polyamide powder and SI Coatings’ know-how in the field of adhesion promoters complemented each other perfectly. The result: a reliable water-based primer that does not require any special protective equipment such as fume cupboards.

The product is label-free according to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS). The residual solvent content, shown as volatile organic compounds (VOC), is less than two percent. “As we are a global company, we can offer the jointly developed primer to Evonik customers worldwide, even in small quantities,” says Managing Director Andreas Kunz of SI Coatings, emphasizing the advantage of the partnership.

The new Si Coatings 100011-00L primer with water hazard class WGK1 has a shelf life of six months if stored frost-free. It can be applied by brushing, spraying, dipping or doctoring and baked with VESTOSINT® at around 300 °C during heating for the fluidized bed sintering process. One application is cardan shafts, for example, which are coated on both the outside and inside.

Evonik markets the high-performance plastic polyamide 12 as a powder under the name VESTOSINT®, for example for coating dishwasher baskets, metals in household goods, the automotive industry and medical technology. The Group is a global leader in the production of polyamide 12 molding compounds, which are in high demand in highly attractive markets such as the automotive industry, oil and gas production, the medical and sports sectors.

SI Coatings in Wuppertal develops and produces technical, functional and decorative coating materials and adhesion promoters for a wide range of applications.

About SI Coatings

SI Coatings develops and produces technical, functional and decorative coating materials and adhesion promoters for a wide range of applications. As an independent company, founded out of the HUEHOCO Group, SI Coatings is integrated into the technology network of a family-run group of companies that has been offering customized solutions in the coil coating industry for over 100 years. The products of the HUEHOCO Group can be found in over 30 industries worldwide, are produced at 14 locations on 4 continents and are supplied to over 40 countries. From steel processing and finishing with coating materials developed in-house to complex stamped parts in a progressive die – always with a focus on environmentally friendly and resource-saving innovations.

Information on Evonik

Evonik is one of the world’s leading specialty chemicals companies. The Group operates in over 100 countries and generated sales of € 12.2 billion and a profit (adjusted EBITDA) of € 1.91 billion in 2020. Evonik goes far beyond chemistry to create innovative, valuable and sustainable solutions for customers. More than 33,000 employees are united by a common drive: we want to make life better, day after day.

About Smart Materials

The Smart Materials division includes the business with innovative materials that enable resource-saving solutions and replace conventional materials. They provide smart answers to today’s major challenges: the environment, urbanization, energy efficiency, mobility and health. In the 2020 financial year, the Smart Materials division generated pro forma sales of €3.24 billion with around 7,900 employees.

Legal notice

Insofar as we express forecasts or expectations in this press release or our statements relate to the future, these forecasts or expectations may be associated with known or unknown risks and uncertainties. Actual results or developments may vary depending on changes in the underlying conditions. Neither Evonik Industries AG nor any of its affiliates assumes any obligation to update any forward-looking statements, expectations or statements contained in this release.

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