Closing cap for a container

A closing cap for a container includes a separating line on a lateral wall forming a retaining ring, configured to remain anchored to a neck of the container and extending up to a free edge. A closing element is engageable with the neck, to open or close the container. The separating line is circumferentially interrupted to define in the lateral wall a joining zone, extending at a first angle, in which the retaining ring and the closing element are joined. An engagement element of the retaining ring is bent when the cap is closed. First and second incision lines allow deformability of a connecting portion and a region of the engagement element extending at a second angle, so that when first opening the closing element, the region goes beyond the locking ring and deforms to rest on the locking ring in an extended configuration.