Aromatic polyamide, polymerization method thereof, and...

Details Aromatic polyamide, polymerization method thereof, and... Aromatic polyamide, polymerization method thereof, and...

2007-10-09

2010-11-23

Gulakowski, Randy (Department: 1796)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

Alignment layer of specified composition

C528S335000, C528S348000, C528S340000

Reexamination Certificate

active

07838091

ABSTRACT:
A novel aromatic polyamide compound, a polymerization method thereof, and an optical film for use in a flexible display substrate produced using the same are disclosed. The aromatic polyamide compound is a copolymer comprising a repeating unit of a para-substituted aromatic diamine and a repeating unit of a meta- or meta-para-substituted aromatic diamine. The aromatic polyamide compound is colorless and transparent, excellent in heat resistance, and excellent in processability such as the compound being easily dissolved in a polar organic solvent without the addition of an inorganic salt. Therefore, the aromatic polyamide compound is suitable for producing the optical film for use in a display substrate.

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International Search Report for PCT/KR2007/004910 dated Jan. 18, 2008.

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