visto temporário vis granted to a person who can demonstrate specific skills, talents, or experience that are unique to him or herand cannot be performed by a brazilian citizen - this is an investigation that the brazilian ministry of labor and employment(ministério do trabalho e emprego - mte) assumes responsibility for.

the temporary visa without a company tie, does in fact involve the requesting company significantly in acquiring the visa- it is aimed at companies who are looking to hire an individual on a contract-basis and, just as for the visto temporário v, the individual must have some skill or experience that is desirable and unavailable in brazil. 

in order to qualify for this type of visa, the applicant cannot be an employee of the Brazilian company (or foreign brazilian-based company) requesting the visa, and should be an independent contractor necessary for the completion of  a project requiring skills that are not otherwise available in brazil.