The control discharge Characteristic liquefied delivery constituent which possesses low early medicine gushing Characteristic

摘要

(57) Abstract This invention, the based polymer or the copolymer and the organicity solvent, offers the polymerization control discharge additive, and the sustained-release polymerization constituent which includes the biological activator. The above-mentioned polymerization control discharge additive, that solidifying, when forming the solid-state in plant, decreases the early burst of the biological activator which is discharged from the above-mentioned polymerization constituent. As for the above-mentioned control discharge additive, desirably, it is the poly (lactide - ko - glycolide)/polyethylene burukoru block copolymer.