Evonik Highlights Dispersants for UV Coating Systems at CHINACOAT 2019

Industrial Coatings

Unlike architectural, industrial coatings are not defined by their aesthetic properties but by their protective ones.

Industrial protective coatings are mainly long-lasting coating solutions which allow longer use of industrial facilities or other industrial applications exposed to extreme environmental conditions. Polyurethane, polyester, epoxy and fluoropolymers are the main resins used in industrial coatings.

Evonik is highlighting its solutions for a variety of coating applications at (booth no. W3D05) CHINACOAT 2019. The award-winning TEGO® Dispers 689, a new dispersant specially designed for the wetting and dispersing of matting agents in 100 percent UV coating systems.

These days, coatings manufacturers increasingly demand solutions that combine outstanding performance with environmental sustainability. Evonik listens to the market and develops innovative products that can fulfil these demands in the focus applications.

Recent Breakthrough Developments are:

Greener Decorative and Flooring CoatingsDue to tightening regulatory pressures and sustainability initiatives, low- and even zero-VOC coatings are of particular interest in the decorative and flooring coatings market. Using water-based coatings and UV curable systems is becoming increasingly popular.

  • The award-winning TEGO® Dispers 689, a new dispersant specially designed for the wetting and dispersing of matting agents in 100% UV coating systems.
  • The new generation of 2-in-1 dispersants, TEGO® Dispers 747 W helps architectural coating formulations achieve outstanding performance.
  • Water-based Anquamine® epoxy curing agents for concrete epoxy coatings offer unrivalled fast-cure and excellent aesthetics, for use in epoxy primers and topcoats on concrete substrates.

Higher-performance and Environmentally Friendly Industrial CoatingsEvonik is successfully tackling the challenge of combining high performance for industrial coatings with environmental friendliness and resource efficiency, where less is sometimes more. This means that less coating can generate savings in materials, time, and cost while still providing strong performance.

  • The new functionalized AEROSIL® dispersion VP Disp. WF 7620 provides superior rheology control for optimized water-based coatings, especially for spray applications.
  • SILIKOFTAL® HTW 3, the first waterborne, VOC-free & FDA-compliant heat-resistant resin, meets all the requirements of a sustainable formulation. It is low-VOC and suitable for food-contact applications such as cook-& bakeware.
  • Ancamine® and Ancamide® epoxy curing agents allow industrial coating customers to achieve excellent anti-corrosion protection, see fast return for wet-on-wet, meet DTM requirements, and also provide a solution to meet formulation upgrade trends for industrial coating.

Tailored Solutions for Various Applications

  • VESTANAT® EP-DC 1241, special acrylic isocyanate for UV resin design.
  • VESTAGON® BF1320/BF1321 stands out with its low emission of the baking process combined with easy handling and good matting control for the polyurethane powder coating crosslinkers.
  • VESTANAT® EP-MF grades are novel ready-to-use hybrid urethane-silane crosslinkers that cure at room temperature.
  • When long-term corrosion protection is called for, inorganic waterborne binders such as Dynasylan® SIVO 140 are state-of-the-art. Typical application areas include industrial plants, bridges, transmission towers and shipbuilding. They offer a double benefit for the environment, by releasing almost no VOC and by increasing the service life of structures and installations.
  • DYNAPOL® is the perfect binder for every paint layer on pre-coated rigid metal containers for food or non-food applications. They combine superior protection properties with high flexibility, sterilization resistance, film hardness, and scratch resistance.
  • VISIOMER® HEMA-P 70M, a new all-rounder for adhesion promotion, anti-corrosion, and flame retardancy.

While various coating applications have their unique challenges to be addressed, they all share the same need for high-performance coatings products that are sustainable and can improve efficiency,” commented Fuliang Xia, senior vice president & general manager, Evonik Resource Efficiency, Asia Pacific North. “As a longstanding partner for the coating industry in Asia, Evonik contributes to improving the performance of our customers’ products through differentiated product offerings. We work closely with our customers to develop products and solutions that cater to the local market needs.”


New Polysaccharides-based Smart Polymer Coatings for Packaging

RUDN University chemists have discovered a unique method for polymer coating based on natural polysaccharides. It simultaneously has antioxidant, antimicrobial and barrier properties, and protects the content against ultraviolet exposure. Using the film to package and coat food products will considerably extend their shelf life.

Polymer Coatings with Unique Combination of Properties

RUDN University chemists have discovered a unique method for polymer coating based on natural polysaccharides. It simultaneously has antioxidant, antimicrobial and barrier properties, and protects the content against ultraviolet exposure. Using the film to package and coat food products will considerably extend their shelf life.

Polymer Coatings with Unique Combination of Properties

food-packaging-coating

The unique combination and proportions of polymer components make it possible to obtain films with the following properties:

  • Low permeability to water vapour and oxygen,
  • Enhanced mechanic properties: high-tensile strength,
  • Active properties, i.e. apparent antibacterial and fungicidal effects.

The history of the production of polymer coatings with protection properties is not new. However, the methods are being improved, thereby enhancing fundamental science. RUDN University chemists developed nanoparticles where the following four properties are combined not separately but altogether: the first one is traditional – barrier property and the rest are so-called active properties: antioxidant, antimicrobial properties and the ones which protect the product against ultraviolet exposure. The basis for polymer coatings is bilayer.

Smart Coatings with Barrier properties

Traditional packaging has only barrier properties. It includes the packaging we are used to seeing every day: plastic, vacuum one.

If the packaging has antibacterial properties, protects against ultraviolet exposure, or has any other properties – it is called active. A whole range of chemical “introductions” are carried out to make each of its variations. For example, it makes sense to introduce antioxidants into the packaging if it has antibacterial properties.

Their packaging is not an only barrier and active but also smart. This means that it can respond to changes in the environment, for example, to the increase in humidity and temperature which is not acceptable for the film-wrapped product. The wrapping will change colour in such cases.

Environmentally Friendly Unique Discovery

Chemists have discovered the method for combining many useful properties altogether: antibacterial, antioxidant, and antimicrobial, as well as smart properties. The same nanoparticles are responsible for all these properties. It is the method that is unique. Moreover, the obtained films are biocompatible, biodegradable. They are absolutely non-toxic. Such films are in line with the global trend of going green – this is real green chemistry, i.e. which is environmentally friendly.

Extending the Shelf Life of Products

The method is environmentally friendly, safe, simple and cost-efficient. It is the first time the most important useful properties for extending the shelf life of products have been combined. The invented compound can be used as the film in which the product will be wrapped: this will not involve its quality changes. Moreover, the immersion method seems promising: as the material is completely safe, the products can be immersed in it, thereby creating a protective film.