This paper addresses the problem of controlling a nonlinear process when linear models have been identified at different operating points. A multimodel approach is used to to identify and control a highly nonlinear process. The internal linear model representation of the nonlinear plant for conventional robust controller is replaced by the linear parameter varying (LPV) model, which offer distinct advantages for nonlinear model-based control. For this LPV structure a robust controller is then designed based on H_∞ techniques. Simulation results for a CSTR process are used to illustrate the performance benefits of multimodel approach