[JAdams]

There is no rule about the maximum number of intentional fouls allowed for each player, other than the normal limit of five personals.

However, if this occurred in my game, I would have a little talk with the coach after the second one, asking for his help to control the player. Intentional fouls, particularly when they're aggressive fouls, are a leading cause of fights... and nobody wins when a fight breaks out. A little preventive officiating goes a long way.