Wood Plastic Composites sind vielseitig: Terrassendielen, Fassadenverkleidungen, Geländer und Fensterrahmen sind nur einige Beispiele, die aus dem neuen Composite-Material hergestellt werden können. Die Verbundwerkstoffe aus Holz und thermoplastischen Kunststoffen überzeugen durch interessante Haptik, ansprechende Optik und ihre Nachhaltigkeit. Das neue Additiv Preventol MPT 11 von LANXESS schützt den Werkstoff wirksam vor dem Befall durch Mikropilze und steigert so die Lebensdauer und Wirtschaftlichkeit dieses idealen Baumaterials für den Außenbereich. 

Leverkusen, Oktober 2008	(2008-0182-1)
Foto: LANXESS AG
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Wood plastic composites are versatile: Decking, façade cladding, railings and window frames are just some of the products that can be manufactured out of the composite material. The material combination of wood and thermoplastics scores due to its interesting tactile quality, attractive appearance and sustainability. The new additive Preventol MPT 11 from LANXESS effectively protects the material from microfungi, thereby prolonging the life and increasing the cost-effectiveness of what is an ideal construction material for outdoor applications. 

Leverkusen, October 2008	       (2008-0182E-1)
Photo: LANXESS AG

No chance for woodworm

Summer has arrived and the first rays of sun invite you onto the terrace to relax or alternatively, into the garden for a barbecue. At the same time, wooden terraces create a welcoming atmosphere. However, wood is a natural product which can be damaged by weathering (e.g. sun, rain, heat and cold) as well as by fungi and insects. Therefore, it is recommended that wood is treated with appropriate preservatives. This is where LANXESS’s active ingredients come into their own.

It comes down to the right wood preservative

Garden fences, terraces and carports made from wood are becoming ever more popular. It is no wonder: After all, wood is a natural building material which is not just characterized by its versatility, stability and low weight, but also by its aesthetics. Today, with simple constructive measures, those who decide to erect wooden constructions or gates in their garden can ensure that the wood that is used for building will keep its natural stability and beauty over a long period of time. Direct contact with the soil and prolonged moisture should be avoided. For example, steel post carriers can be used to position fences and pergolas. This way, the wood quickly dries out after becoming wet. For horizontal wooden parts, there are round timbers which the rain can run off. The better that wood is protected from moisture penetration, the smaller the risk of microbial infestation.

Industrial impregnation for permanent wood protection

Rain drops falling on wood --- Image by © image100/Corbis

Rain drops falling on wood — Image by © image100/Corbis

Terraces and other constructions made from wood are frequently exposed to a lot of wear. This is why the selection of suitable material is of key importance. Resistant types of wood include heartwood from locust trees and tropical woods such as bangkirai, iroko and bilinga. However less expensive, local types of wood from sustainable forestry are just as suitable, e.g, fir and pine. Through impregnation using the so-called vacuum-pressure technique, active agents penetrate  deeply into the wood in order to fight against wood damaging organisms. This results in a durability which is similar to the endangered tropical wood species.

Wood preservatives for DIY enthusiasts

Carports made from wood are highly favored as they offer protection against sun, rain and snow. Another advantage is their design which is open at the side: Wet cars dry quickly. A carport can be easily added to a house or plot of land. As such, it is cheaper and quicker to build than a garage made of concrete.

Here as well, it is recommended that support beams are used, made from vacuum-pressure impregnated wood. However, non-supportive wooden elements (e.g. side cladding) can be protected by brush application of wood coatings. However, only products containing active ingredients provide protection against organisms that destroy or discolour wood. Suitable products, which can also be used for maintaining wooden elements, include wood preservative glazes with an approval underthe European law governing biocidal products (Biocidal Product Regulations ).

Wood Plastic Composites (WPC) as an alternative

Mit den hitzebeständigen anorganischen Pigmenten aus dem Sortiment Colortherm von LANXESS lassen sich Wood Plastic Composites witterungsbeständig einfärben. Die Verbundwerkstoffe aus Holz und thermoplastischen Kunststoffen eignen sich für Terrassendielen, Fassadenverkleidungen, Geländer, Fensterrahmen sowie dekorative Profile und finden auch im Automobilsektor und Möbelbau Anwendung. Leverkusen, Oktober 2008 (2008-0182-2) Foto: LANXESS AG ----- Heat-resistant inorganic pigments from LANXESS’s Colortherm range are ideal for coloring wood plastic composites while keeping them weather-resistant. The material combination of wood and thermoplastics is suitable for the production of decking, façade cladding, railings, window frames and decorative profiles, in addition to finding application in the automotive and furniture sectors. Leverkusen, October 2008 (2008-0182E-2) Photo: LANXESS AG

Wood plastic composites are versatile: Decking, façade cladding, railings and window frames are just some of the products that can be manufactured out of the composite material. The material combination of wood and thermoplastics scores due to its interesting tactile quality, attractive appearance and sustainability. The additive Preventol MPT 11 from LANXESS effectively protects the material from microfungi, thereby prolonging the life and increasing the cost-effectiveness of what is an ideal construction material for outdoor applications.

In addition to wood that is naturally grown, wood plastic composites have been on offer for several years. The composite work materials made from pulverised wood and thermoplastic plastics are versatile: Terrace boards, facade cladding, railings and window frames are just some examples of the products which can be produced from this material. They impress the end user with their interesting surface feel and good looks. In order to prevent aesthetic changes as a result of weathering, care must be taken when purchasing that the WPC components are treated with a fungicide that prevents microbial infestation. With Preventol MPT11-40, LANXESS offers an ideal solution for manufacturers of WPC products.

Regardless of whether it is a garden fence, carport or terrace: In many cases, construction measures are not sufficient. Sold as impregnating agents, primers and glazes, supplementary wood preservatives for preventing biological infestation are available in many DIY stores and specialist retailers.

Active agents for all applications

As one of the leading manufacturers of biocidal active agents and biocidal formulations, the Material Protection Products (MPP) department at LANXESS offers the paint and varnish industry a comprehensive range of products. Preservatives protect painted wood, dispersion paints and varnishes/ plaster from microbial infestations. Marketed under the Preventol brand, these active agents have to be assessed in accordance with the European Biocidal Products Regulation (BPR) and approved for use in wood preservatives.

As Patrick Meckler, a wood preservative expert at MPP states, “We offer our customers a comprehensive range of active substances that covers all types of wood pest. This range mainly comprises the products Preventol MP 100, Preventol A 8, Preventol A 12 and Preventol HS 75”.

HolzstaemmePreventol MP 100 is a fungicide with very broad efficacy spectrum. In the field of wood protection, it is used against fungi that discolour wood (also known as blue stain fungus) and mildew.

As Meckler goes on to state, “The fungicides Preventol A 8 and Preventol A 12  are highly effective against wood-destroying fungi and among products for the DIY enthusiast, they supplement Preventol MP 100. Furthermore, both active agents are largely used for industrial wood preservation applications, e.g. vacuum- pressure impregnation”.

In Europe, the range of wood preservatives is rounded off by the insecticide Preventol HS 75. This can prevent the infestation of wood by wood-attacking insects such as woodworm, house longhorn beetle and, in some Southern European countries, termites.