I am in buisness with a partner. it is a corp. and I am a 50% shareholder. We are at an impass and I want to dissolve the buisness.

A corporation has a perpetual existence so long as it does not go bankrupt or is voluntarily or administratively dissolved (e.g., for failure to pay annual report). However, barring these scenarios you could approach your partner and ask if he's interested in buying out your shares of the business. Is there an agreement between you and your partner as to what happens if one of you wants out of the corporation? I recommend you contact a business litigator or civil trial lawyer in your area to discuss this matter further.