ortapolymer - where does it drop?

[Corran1]

other then neudiaz, i know that. Specifically which missions. Drop charts say they're boss box only from forest infiltration S and S2, as well as Grove of fanatics S. Anyone have other experiance with it?

[RedCoKid]

According to Japanese Wiki:
Neudaiz Firebreak seed drop, Grove of Fanatics boss box, Forest Infiltration boss box, Price of Research box (2-3 updates away), "machine soldier of star spirit festival disturbance plan Act2 and sand and dust" (box in Act 2 of "Protect the Festa" or "Flash of Ruin"?)