Patent ID: 9139704
Filing Date: 2015-09-22
Classification: C08J

Abstract:
1. A method of introducing an additive into a polymeric material comprising: selecting a liquid formulation comprising an additive, a vehicle and an active compound added to increase the melt viscosity of the polymeric material; and contacting the liquid formulation with said polymeric material in a melt-processing apparatus; wherein said liquid formulation includes at least 20 wt % of vehicle based on the weight of said liquid formulation; wherein said active compound is selected from an anhydride, epoxy, melamine, oxazoline, oxazolinone, lactams, carbodiimide, polyepoxide, isocyanate, polyacyllactam and phosphonate; wherein said additive is selected from colourants, stabilizers, delusterants, anti-static agents, optical brighteners, processing aids, light reflective additives, anti-soil additives, friction modifiers, anti-oxidants, insecticides and anti-flammability additives; and wherein said polymeric material is a polyester.