Vulkollan - PUR - Covestro Deutschland AG

Kunststoffe international, 2005-11-21, Elastomers
...nce gap between FPM on one hand and ACM and HNBR/NBR on the other. [3, 4]. Polyurethane Elastomers (PU, AU, EU): The hot-cast elastomer Vulkollan from Bayer has been almost unrivalled in extreme technical applications, such as high-performance roll coatings, for over 50 years. This is especially true where high-quality combinations of properties, such as extreme wear resistance, very good cutting resistance and tear resistance, low compression set and high dynamic loading at relatively high tem...

Kunststoffe international, 2005-11-21, Polyurethane Elastomers
...mer is produced together with the crosslinking agent, water and additives for cell stabilisation. The CO2 formed in the water-isocyanate reaction serves as the blowing agent and cell gas. Industrial production of high-quality cast elastomers (e. g. Vulkollan from Bayer AG) is carried out in the following steps: - removal of water from the polyester, - prepolymer production from polyester and isocyanate, - mixing the crosslinking agent with the prepolymer and pouring the mixture into the mould, a...

Kunststoffe international, 2005-11-21, Polyurethane Elastomers in Practice
...veyors, drive rollers in textile machinery, heavy load wheels in mechanical engineering and guide rolls in elevator structures. An estimated 25 % of the polyurethane elastomers produced worldwide are currently made into rollers and wheel coverings. Vulkollan a "Showpiece Elastomer" One PUR material that has gained an outstanding reputation in this field of application is the hot-casting elastomer, Vulkollan, which is produced at the wheel manufacturers' by a method certified by Bay...

Kunststoffe international, 2005-11-21, Polyurethanes (PU)
...tablished fields of application - bicycle saddles and medical padding - and into the shoe and furniture industries. A number of noteworthy innovations have also been made in the field of polyurethane casting systems, for example the high-performance Vulkollan casting elastomer. With their modular ElastoLine facility, Hennecke and Bayer have come up with a new overall concept that significantly reduces the amount of work for the operator during the stages of the process before and after the actua...

Kunststoffe international, 2005-11-21, Worldwide Stable Growth: Polyurethanes (PUR)
...ssing. The hot-runner systems with cellular elastomers have shown two-figure growth in the previous year. Rotational coating has also shown above-average growth. The high-performance polyurethane elastomer Vulkollan has been able to maintain its position because the industrial field (wheels and rollers) has continued to grow as a result of the automation efforts of many manufacturers. In Western Europe, which is currently the most highly developed market in the world, rigid integral foams are st...

Kunststoffe international, 2007-10-21, Polyurethanes (PU)
...MaterialScience has succeeded in developing shelf- and sediment-stable prepolymers that react with a cross-linking agent in a simple two-component reaction to yield high-quality elastomers with a consistent quality (Vulkollan). Another innovation has also expanded the range of applications for hot cast elastomers based on MDI prepolymers. Now, prepolymers (Baytec MAX) are available that – like TDI prepolymers – can be used to produce elastomers through amine cross-linking at a comparably high re...

Kunststoffe international, 2008-10-17, Polyurethanes (PU)
...eadened where it usually originates. The consequence is less noise in the surroundings when trains pass. In the area of PU elastomers, hot- elastomers in particular are exhibiting good growth. Material systems such as Vulkollan from Bayer MaterialScience are in demand, especially for production of heavyduty tires and ers. Because of the boom in the logistics branch, sales of solid Vulkollan for tires used on forklift trucks have risen considerably in recent years. In the automotive sector, cellu...

Kunststoffe international, 2010-11-25, Of Fibers, Foam and Nano (?)
...lled “hand mixing process” for foam filling of cavities. Similar manual methods led to the development of PU elastomers at Bayer as well as DuPont: Trade names such as Vulkollan and Adipren are still in use today. Whilst at the end of the war years, that is the beginning of the “post war years”, the hardware for PU lay for the most part in ruins, the software in the heads of the survivors remained pretty much intact. These people with their notes were therefore welcome guests at meetings with t...