I've played for quite a few hours today with no drop. It's nothing to do with the game.
You don't give much information about what is happening when you disconnect but what I assume is happening is that you are losing your Internet connection.
Is the bandwidth in your home maxed out? Try switching off everything else using the Internet connection and trying again.
Are you using a wireless signal in a weak location?
Software firewall?
Could be lots of things really but you need to make sure your Internet connection is stable otherwise the game will kick you.
Try hitting CTRL-B in game to see data use and if the game is able to read and write to the Internet.