Transparent polyester resins and articles therefrom

Compositions suitable for preparing transparent articles comprising an aromatic polyester resin selected from a copolyalkylene terephthalate containing from 3 to 15% by moles of units derived from isophtalic acid and/or a naphthalene dicarboxylic acid and a polyxylylene amide, preferably poly (m.xyl...

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Bibliographische Detailangaben
Hauptverfasser: GHATTA HUSSAIN A, COBROR SANDRO
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Compositions suitable for preparing transparent articles comprising an aromatic polyester resin selected from a copolyalkylene terephthalate containing from 3 to 15% by moles of units derived from isophtalic acid and/or a naphthalene dicarboxylic acid and a polyxylylene amide, preferably poly (m.xylylene adipamide), in which the polyamide is dispersed in the polyester resin as domains with average numeral size of 30 to 200 nm. The compositions are obtained by premelt-mixing the polyester with a dianhydride of a tetracarboxylic acid prior mixing the polyxylylene amide using melt viscosity ratio between the polyester resin and the polyxylylene amide higher than 1.5:1, preferably from 3:1 to 8:1.