PROBLEM TO BE SOLVED: To provide a microorganism controlling agent excellent in controlling effect.SOLUTION: There is provided a microorganism controlling agent containing a bis quaternary ammonium salt compound represented by the formula (1) and a silver-based or copper-based antibacterial agent. (1), where R1 and R2 are each independently a substituted/unsubstituted hydrocarbon group, R3 and R4 are each independently a substituted/unsubstituted hydrocarbon group, a substituted/unsubstituted alkoxy group, hydroxy group, amino group or H, R5 is a substituted/unsubstituted hydrocarbon group or a single bond, Y1 is -NRnCO-, -CONRn-, -NRnCS-, -CRnO-, -COO-, -COS-, -O-, -S- or a single bond, Y2 is -CONRn-, -NRnCO-, -CSNRn-, -OCRn-, -OOC-, -SOC-, -O-, -S- or a single bond, Rn is a substituted/unsubstituted hydrocarbon group or H, and Z is anion and a is 1 or 2.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】防除効果に優れる微生物防除剤の提供。【解決手段】式(1)で示されるビス四級アンモニウム塩化合物と、銀系または銅系抗菌剤とを含有する微生物防除剤。(R1及びR2は各々独立に置換/非置換の炭化水素基;R3及びR4は各々独立に置換/非置換の炭化水素基、置換/非置換のアルコキシ基、ヒドロキシル基、アミノ基又はH;R5は置換/非置換の炭化水素基又は単結合;Y1は-NRnCO-、-CONRn-、-NRnCS-、-CRnO-、-COO-、-COS-、-O-、-S-又は単結合;Y2は-CONRn-、-NRnCO-、-CSNRn-、-OCRn-、-OOC-、-SOC-、-O-、-S-又は単結合;Rnは置換/非置換の炭化水素基又はH;Zはアニオン;aは1又は2)【選択図】なし
