a process is provided for the production of a very low melt viscosity polymer resin , suitable for use in meltblown processing . according to the process of the current invention , a high melt viscosity resin is subjected to post - reactor molecular weight alteration by extrusion with a chemical prodegradant . the process produces a very low melt viscosity resin that can be used in meltblown processing without further treatment to reduce the average molecular weight of the resin . further , the very low melt viscosity resins produced according to the process of the current invention contain very little or no residual prodegradant .