Method for providing resistance to yellowing in polyamide articles and polyamide articles obtained from this method
申请人:RHODIA POLIAMIDA E ESPECIALIDADES LTDA
公开号:US20170335087A1
公开(公告)日:2017-11-23
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.