"is more imperative" is correct and usable in written English.
You can use this phrase when emphasizing the importance or urgency of something. For example, "Ensuring the safety of our employees is more imperative than ever in times of crisis."
This is more imperative than suggestive.
With Structural Film, truth to the original is more imperative.
Her stance is likely to spark anger across the EU at a time when the incentive to make allies is more imperative than ever.
Legal advocacy, Ms. Ching said, is more imperative than ever now, as the loan modification process often drags on for months and the companies that service mortgages, typically large banks, continually lose homeowner paperwork or use delaying tactics.
By contrast, Deng Xiaoping and his successors, down to Mr Xi, have argued that to ensure that economic development does not lead to instability or chaos, strong party rule is more imperative than ever.
The virtue of kindness is more imperative in the personality of a woman than in that of a man.
The issues that pervade the exhibition are more imperative than they might seem, Mr. Hosler said.
The working order of other parts, like brakes, might be more imperative.
Progress may have been made in 2015, but it's more imperative than ever not to treat it as a fad or selling point.
Indeed, it has never been more imperative for states to reform or eliminate their statutes of limitations in child sexual abuse cases.
While such bluster may be more imperative in a trade that demands a greater degree of self-promotion than any other, it's a superlative that Serena has managed to realize more comprehensively – and with inestimably finer tact.
