公开(公告)号：US10344143B2

公开(公告)日：2019-07-09

申请号：US15532629

申请日：2015-10-01

Applicant: RHODIA POLIAMIDA E ESPECIALIDADES S.A.

Inventor： Renata Redondo Bonaldi ,  Gabriel Gorescu ,  Thomas Gonzaga Canova ,  Everton Ferreira Dos Santos

IPC: C08K5/42 ,  C08G69/28 ,  D01F1/10 ,  D01F6/60 ,  C08G69/16 ,  C08L77/02 ,  C08L77/06

Abstract: The present invention relates to a method for providing resistance to phenolic yellowing, during storage, transportation and processing of polyamide articles, caused by the presence of phenolic compounds in plastic package materials. The phenolic yellowing resistance is obtained by adding a sulfonated reagent during polymerization of the polyamide and/or during the formation of the polyamide article, like melt-spinning extrusion, and/or during the conversion of the polyamide article by texturizing.