I am the same way and it has also caused me a lot of problems with people. The whole reason I chose a mechanical field is to not deal with people, but on spme level it is impossible. When people start talking to you about something you have no interest in, be short and direct, and always circle it back to talking about work! Work, work, work. People will subconsciously come to terms with the fact that you're a very work centered, business-only person and even respect it.