... ),isBiodegradable plastic used in package,tableware,engineering,agricultural industries. Polybutylene succinate, (PBS),isBiodegradable plastic used in package,tableware,engineering,agricultural industries ... one-step condensation of 1, 4-butylene glycol and succinic acid. Incompost, PBS is non-toxic and it can degrade or ... Notched A : 250-400 J/mHardness Rockwell : 80-90 Polybutylene succinate