After a firm is dissolved, every partner or his representative may, in the absence of a contract between the partners to the contrary, restrain any other partner or his representative from carrying on a similar business in the firm name or from using any of the property of the firm for his own benefit, until the affairs of the firm have been completely wound up:
     Provided that where any partner or his representative has bought the goodwill of the firm, nothing in this section shall affect his right to use the firm name.