HallStar Co. was awarded a U.S. patent for biopolymer compositions having improved flexibility. It applies to new bio-based polymer additives derived from renewable feedstocks and which provide benefits to processors.
Hallgreen R-8010 is a polymeric succinate that boosts flexibility and pliability of biopolymers such as polylactic acid, starch, polyhydroxyalkanoate and polyhydroxybutyrate while maintaining long-term compatibility.
“Brittleness can be a real problem with biopolymer products,” explains Robert Hu, vice president of research and development for the Chicago company.
At 30 percent loading levels R-8010 provides a tenfold increase in elongation percentage at break, five percent reduction in tensile strength and five percent reduction In tensile at break, HallStar claims. As well, the product increases melt flow index for higher throughput and less energy consumption.
“The Hallgreen line has become the go-to modifiers for customers that need environmentally friendly esters,” stated HallGreen Chairman, President and CEO John Paro in a news release.