POLYAMIC ACID POLYMER COMPOSITE AND PREPARATION METHOD THEREOF

摘要

The present invention relates to a polyamic acid polymer composite and a method for producing the same, and more specifically, a polyamic acid polymer composite, which can be applied to display substrate production due to its high transparency and low thermal expansion of glass-level, and a method for producing same. The polyamic acid polymer composite comprises 50 to 99 wt % of a polyamic acid polymer having a repeating unit of Chemical Formula 1; and 1 to 50 wt % of a silica-based particle:;wherein, R1 to R3, m and n have the same meanings as defined in the specification.

主权项

1. A polyamic acid polymer composite comprising: 50 to 99 wt % of a polyamic acid polymer having a repeating unit of Chemical Formula 1; and 1 to 50 wt % of a silica-based particle, wherein a silicon atom on the surface of the silica-based particle is chemically bonded to R3 of Chemical Formula 1: wherein, R1 is selected from the group consisting of divalent aromatic, cycloaliphatic and aliphatic organic groups; R2 is selected from the group consisting of tetravalent aromatic, cycloaliphatic and aliphatic organic groups; R3 is selected from the group consisting of divalent or higher valent organic groups, which are derived from aromatic, cycloaliphatic or aliphatic groups optionally having a hydroxyl group; and n and m are each independently an integer of 1 or more.