NEW YORK — Donald Trump told an appellate court here Monday that he can’t obtain a bond for the full amount of the civil fraud judgment against him — more than $450 million, including interest — raising the possibility that the state attorney general’s office could begin to seize his assets unless the court agrees to halt the judgment while the former president appeals the verdict.

Trump’s lawyers said in a court filing that “ongoing diligent efforts have proven that a bond in the judgment’s full amount is a ‘practical impossibility,’” adding that those efforts “have included approaching about 30 surety companies through 4 separate brokers.”