Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Various Polycyclic Pigments

The thermal requirements for pigments which are targeted for PETP melt extrusion are particularly severe. However, it is important to consider the individual conditions at the various stages of polymer coloration. Pigments, for instance, which are added during the so-called condensation process in a glycol dispersion prior to transesterification or condensation in the autoclave, are exposed to temperatures between 240 and 290°C for 5 to 6 hours [43]. These harsh conditions are only tolerated by very few polycyclic pigments, primarily by representatives of the quinacridone, copper phthalocyanine, naphthalenetetracarboxylic acid, and pery-lene tetracarboxylic acid series. [Pg.178]

Cinquasia pigments are various formulations based on quinacridone reds. For more information on quinacridone pigments, see polycyclic pigments group quinacridone sub-group. [Pg.106]

See other pages where Various Polycyclic Pigments is mentioned: [Pg.501]    [Pg.502]    [Pg.504]    [Pg.506]    [Pg.508]    [Pg.510]    [Pg.512]    [Pg.514]    [Pg.516]    [Pg.518]    [Pg.520]    [Pg.522]    [Pg.524]    [Pg.526]    [Pg.528]    [Pg.501]    [Pg.502]    [Pg.504]    [Pg.506]    [Pg.508]    [Pg.510]    [Pg.512]    [Pg.514]    [Pg.516]    [Pg.518]    [Pg.520]    [Pg.522]    [Pg.524]    [Pg.526]    [Pg.528]    [Pg.109]    [Pg.111]    [Pg.580]    [Pg.38]    [Pg.536]    [Pg.275]    [Pg.4]    [Pg.579]    [Pg.143]    [Pg.38]   


SEARCH



Polycyclic pigments

© 2024 chempedia.info