Bayer MaterialScience is among the world's largest polymer companies with 2010 sales of €10.2bn. Business activities are focused on the manufacture of high-tech polymer materials and the development of innovative solutions for products used in many areas of daily life. The main segments served are the automotive, electrical and electronics, construction and the sports and leisure industries. At the end of 2010, Bayer MaterialScience had 30 production sites and employed approximately 14,400 people around the globe. Bayer MaterialScience is a Bayer Group company.
Polycarbonate materials for the solid state lighting industry
Especially for the solid state lighting (SSL) industry Bayer MaterialScience has developed a series of polycarbonate-based materials for diverse optical applications. The basic requirements of light management are:
- Light guiding
- Light diffusing
- Light reflecting
- Light blocking
To serve these requirements Bayer MaterialScience has developed Makrolon® LED and Makrolon® FR, which are clear grades for injection molded lenses and light guides.
Polycarbonate grades for highest light transmission
Different grades have been developed to achieve the highest light transmission combined with the generally known spectrum of technical properties of polycarbonates, including mechanical strength, temperature durability and flame retardance compared to other polymer classes used in the lighting industry.
Makrolon® LED2045 is especially designed for light guides used in indoor applications and the automotive industry. Makrolon® LED2245 is also designed for light guides and optical lenses in indoor applications. Makrolon® LED2643 is a typical grade for the production of secondary optics for LED based applications and the UV-protected weatherproof grade makes it especially useful for outdoor applications. All Makrolon® LED grades are globally available.
In many applications it is a basic requirement that the flame retardance of Makrolon® is increased compared to regular grades. Following these requirements different grades have been developed. Makrolon® FR7087 (UL94 5VA@3.0mm / Vfirstname.lastname@example.org / Vemail@example.com) and Makrolon® FR7067 (UL94 Vfirstname.lastname@example.org / Vemail@example.com) are UV-stabilised grades with a high transmission, which gives these grades a unique position in the range of polycarbonates. Both Makrolon® FR grades are globally available except in Europe.
Light diffusing grades
Special Makrolon® grades have been developed for light diffusion. These grades offer excellent source blocking power and efficient light diffusion without sacrificing the high light transmission. Numerous diffusion levels are possible. These are available globally in molding and extrusion grades.
Reflective colour technology
Based on this technology a reflectance of up to 95% is possible without secondary operations, like plating or coating. These materials are suitable for reflectors, shades and housings. They are available globally in molding and extrusion grades.
Light blocking technologies
Occasionally, guiding light makes it necessary to block parts of the light. Makrolon® grades can be used for a 100% light blocking with only 0.5mm thickness of the light blocking layer. This technology is suitable for preventing light bleed-through in shades, holders and housings. The material is globally available in molding and extrusion grades.
Grades for transparent extruded products
Besides the injection molded parts it is often necessary to use extruded parts for diverse applications. The different requirements for these applications can be covered by grades like Makrolon® 6717 (UL94 Vfirstname.lastname@example.org) and Makrolon® ET3113 (UL94 Vemail@example.com to 1.4mm). These grades are globally available.
Parts and tools design, injection molding and extrusion processes
Beyond the material knowledge Bayer MaterialScience has detailed experience in designing parts and tools, injection molding, extrusion processes and secondary production steps. This knowledge is offered as a service to customers at different technical centers around the world.
Contact: Director Global LED Programme
Contact: Dr. Klaus S. Reinartz
+49 214 30 32403
Available White Papers
Spectacular LED Information Wall Display at Museum of London The Museum of London is considered the world's largest urban history museum. An important aspiration of the museum is to also make the knowledge it contains available to younger generations and to pique their interest in urban history.
Polycarbonate Lenses for Efficient LED Lighting: Brighter, Safer and More Resource-Conserving The potential cost and energy savings alone make light-emitting diodes (LED's) a smarter choice than other lighting technologies for interior and exterior lighting applications.
Bayer MaterialScience Develops Customised Polycarbonate Grades for LED Applications With the growing trend towards the use of light-emitting diodes (LEDs) for innovative lamp and lighting concepts, Bayer MaterialScience has developed new grades of its transparent Makrolon® polycarbonate specifically for the production of these modern light sources.