Biodiesel fuels have different flow properties at cold temperatures. The reason for this is that biodiesel is made up of various long-chain fatty acid methyl esters (FAMEs), whose melting points range from approx. -35 to +45°C. Depending on its raw material base, the biodiesel contains more or less high melting fatty acid methyl esters. The different biodiesel types must still safely fulfill the low temperature property criteria which are required by the current fuel standards.
The leading solution for this problem is VISCOPLEX® Cold Flow Improvers (CFIs)1), a broad spectrum of cold flow improvers from Evonik’s Oil Additives Business Line.
1) cold-flow improvers