Process for preparing a lubricated thermoplastic polymer

摘要

A method for preparing a lubricated thermoplastic polymer, in particular a lubricated polyamide is described. A method for preparing a lubricated thermoplastic polymer, in particular a lubricated polyamide, according to which a mixture of lubricants is added to the molten polymer during the polymerization process is also described.

主权项

1. A process for preparing a lubricated thermoplastic polymer, the process comprising
(i) concentrating at least one monomer in water to form a molten phase comprising the at least one monomer; (ii) polymerizing the at least one monomer with a pressurized distillation phase and a decompression phase to form a polymer in the melt state; and (iii) introducing a lubricant:
(a) into the polymer in the melt state or(b) into the molten phase comprising monomers that form a polymer during polymerization,wherein the lubricant is a mixture of a paraffin, a fatty acid and a fatty acid metal salt,and wherein the lubricant is the only lubricant introduced into the polymer or into the molten phase, wherein the thermoplastic is a polyamide wherein the process does not include a supplementary step of depositing lubricant on granules.