POLYAMIDE MOLDED ARTICLE AND PRODUCTION THEREOF

PURPOSE:To obtain the title molded article free from poor dispersibility and contamination, etc., of dye and pigment, having coloring properties and functional properties having excellent fastness by blending dye and pigment and additive used in form of liquid mixture blended with a specific dispers...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ONAKA HIDEMITSU, FUKAZAWA KAZUYUKI, YAMABE MASAHIRO
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:PURPOSE:To obtain the title molded article free from poor dispersibility and contamination, etc., of dye and pigment, having coloring properties and functional properties having excellent fastness by blending dye and pigment and additive used in form of liquid mixture blended with a specific dispersing medium with a melted polyamide. CONSTITUTION:(A) Dye and pigment and/or additive are blended with (B) a dispersing medium (preferably polycondensation reaction product of succinic acid with diethylene glycol) consisting of a polymer mainly composed of recurring unit expressed by the formula [k is positive integer; l is 1 or 2; R1 is CmH2m (m is 2-12) alkylene; R2 is CnH2n (n is 2-4) alkylene]. Then the resultant liquid mixture is blended with a polyamide kept in melted state and then the blend is subjected to melt molding to provide the aimed molded article. Furthermore, blend of the liquid mixture with polyamide is preferably carried out just before a nozzle of every molding head of molding equipment and blend thereafter is preferably carried out using a stationary blending element.