Polyimide block copolymer and liquid crystal alignment layer for

Details Polyimide block copolymer and liquid crystal alignment layer for Polyimide block copolymer and liquid crystal alignment layer for

1996-01-31

1998-06-30

Hampton-Hightower, P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528125, 528128, 528170, 528172, 528173, 528176, 528183, 528185, 528220, 528229, 528350, 528351, 428 1, 4284735, 359 36, 359 93, 359103, 359104, C08G 7310, C08G 6926

Patent

active

057735590

ABSTRACT:
The present invention relates to a process of producing a polyimide-type copolymer, to a thin layer forming agent, to a liquid crystal alignment layer and to processes of producing thin layer formation agents and liquid crystal alignment layers. More specifically, this invention relates to a polyamic acid block copolymer, a polyimide block copolymer, a polyimide-polyamic acid block copolymer, a thin layer forming agent comprised of a polyimide-type block copolymer, and a liquid crystal alignment layer comprised of a polyimide-type block copolymer and processes of their production.

REFERENCES:
patent: 5276132 (1994-01-01), Nishikawa et al.
patent: 5478682 (1995-12-01), Nishikawa et al.
"Principles of Polymerization," 3rd Ed., by George Odian, John Wiley & Sons, Inc., pp. 142-143, the date of publication is not available.

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