Polyimide varnish

Provided is a polyimide varnish suitable for the formation of a liquid crystal alignment film or the like, the polyimide varnish being suppressed in moisture absorption whitening phenomenon, having little viscosity change, having excellent storage stability, being less susceptible to the occurrence...

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Bibliographische Detailangaben
Hauptverfasser: MATSUMOTO KINYA, ASHIZAWA RYOICHI
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:Provided is a polyimide varnish suitable for the formation of a liquid crystal alignment film or the like, the polyimide varnish being suppressed in moisture absorption whitening phenomenon, having little viscosity change, having excellent storage stability, being less susceptible to the occurrence of foreign matter, clogging or the like when a film is obtained, having little surface roughness occurring in the obtained film, and being capable of forming a liquid crystal alignment film or the like even when the film is dried or heated. And the characteristics of the original polyimide material can be obtained. The polyimide varnish is characterized by containing the following component (A) and component (B). Component (A): a polyimide (A) that is an imidized product of a polyimide precursor. Component (B): an amine compound (B) having, in the molecule, either a secondary amino group or a tertiary amino group and either a nitrogen-containing aromatic heterocyclic ring or an aromatic hydrocarbon group, the amino