This company recently introduced Altatac™ 1000 resin. Based on tall oil rosin chemistry, this bio-based product is light colored, maintains its adhesive quality after extended heating, and reportedly provides a superior bond on surfaces that are difficult to adhere to.
Altatac 1000 is designed for increased stability in thermoplastic hot-melt adhesives, and reportedly demonstrates superior initial color and color stability compared to traditional rosin esters.