POLYAMIDES

These are prepd. by (1) preparing a dispersion of TiO2 in water and using alaline metal metasilicate as a dispersion agent (2) adding (1) to an aqs. mixture contg. the usual polyamide precursors (3) carrying out the polycondensation by heating until reaction is complete removing any water present as...

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Bibliographische Detailangaben
Hauptverfasser: VINCENT MATTHEWS, WINSTON COSTAIN
Format: Patent
Sprache:eng
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Zusammenfassung:These are prepd. by (1) preparing a dispersion of TiO2 in water and using alaline metal metasilicate as a dispersion agent (2) adding (1) to an aqs. mixture contg. the usual polyamide precursors (3) carrying out the polycondensation by heating until reaction is complete removing any water present as the vapour. The process is used in the prodn. of Nylon 6 and 6.6.