“The special feature of our Colortherm Yellow product range is the high flexibility in pigment selection,” said Stefano Bartolucci, Global Market Segment Manager for Plastics at the Inorganic Pigments business unit at LANXESS. Depending on the type of plastic, the pigments used can mean that varying levels of thermal stability are required – or, to put it more accurately, are sufficient. “In the case of coloring polyethylene, for example, it is sufficient for the pigments used merely not to exhibit any color changes at processing temperatures of around 240°C. However, for applications using polyamide, polypropylene and polyphenylene sulfide, thermal stability of around 300°C is essential,” explained Bartolucci. “By expanding our Colortherm Yellow range of special pigments, we have given processors the option to choose the right pigments for them, tailored to suit the type of plastic to be colored and the requisite thermal stability,” he added.
To be more energy efficient, many people have replaced their incandescent lights with light-emitting diode (LED) bulbs. However, those currently on the market emit a lot of blue light, which has been linked to eye troubles and sleep disturbances. Now, researchers reporting in ACS Applied Materials & Interfaces have developed a prototype LED that reduces — instead of masks — the blue component, while also making colors appear just as they do in natural sunlight. Read More
Chocolate is a beloved treat, but sometimes the cocoa beans that go into bars and other sweets have unpleasant flavors or scents, making the final products taste bad. Surprisingly, only a few compounds associated with these stinky odors are known. Now, researchers reporting in ACS’ Journal of Agricultural and Food Chemistry have identified the two compounds that cause musty, moldy scents in cocoa — work that can help chocolatiers ensure the quality of their products. Read More
Cologne, April 29, 2021 – Ultra-high-performance concretes (UHPCs) are reckoned to be the construction material of the future. When they are colored, however, you have to ensure that the prescribed compressive strength of more than 150 megapascals is still achieved. The iron oxide pigments from LANXESS’s Bayferrox brand are perfect for UHPCs, as has been verified by the association of German cement manufacturers (VDZ) based on an analysis of compressive strength conducted to DIN EN 12390-3. Read More