| http://www.w3.org/ns/prov#value | - E I Du Pont De Nemours And Company04/30/1520150119522 Liquid crystal aligning agents for forming photo-aligning liquid crystal alignment layers, liquid crystal alignment layers and liquid crystal display devices using the sameR2 and r3 are a monovalent organic group having ???nh2 or a monovalent organic group having ???co???o???co???, and r4 is a divalent organic group having an aromatic ring.. .
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