A family power struggle for control of one of Hong Kong’s biggest quoted property developers boiled over in public as the chairman won a last minute court injunction to stop what he claimed was a boardroom coup led by his two younger brothers.

The board of Hong Kong-listed Sun Hung Kai Properties, which has a market capitalisation of $45bn, was due to vote on Thursday on the fate of Walter Kwok, chairman and chief executive, the oldest of the three Kwok brothers who steer the company.