こう粘結 ねんけつ ざいじゃなかったです
kōnen ketsu zaijanakattadesu

Noun
Desu Copula

The polite, past negative form of 抗粘結剤

1. Wasn't an anti-freezing agent.; Wasn't a bonding inhibitor.

Past/Perfective
Negative
Polite
Casual Register
Chemistry