Process for producing gel with liquid crystal structure, and...

Details Process for producing gel with liquid crystal structure, and... Process for producing gel with liquid crystal structure, and...

2007-03-23

2011-12-27

Wu, Shean (Department: 1722)

Compositions

Liquid crystal compositions

C252S299500, C252S299600, C516S031000, C516S900000

Reexamination Certificate

active

08083967

ABSTRACT:
A water-insoluble liquid crystalline gel composed mainly of a water-soluble polymer, itself having a gelation function together with a liquid crystal formation function and having an optical property is produced.First, the water-soluble polymer is dissolved in water or an aqueous solution containing a salt(s) to prepare a polymer solution. Subsequently, this polymer solution is dialyzed in an aqueous solution containing a chemical crosslinking agent, thereby obtaining the gel having a liquid crystal structure and composed mainly of the water-soluble polymer. Said water soluble polymer is one or two or more polymers selected from the group consisting of water-soluble biopolymers, derivatives of these water-soluble biopolymers and water-soluble synthesized polymers. The water-soluble biopolymers are one or two or more polymers selected from the group consisting of nucleic acids, polysaccharides, proteins, modified proteins and polyamino acids. The water-soluble synthesized polymers are one or two or more polymers selected from the group consisting of polyvinyl alcohol, polyethylene glycol, polyacrylic acid and polystyrene sulfonic acid.

REFERENCES:
patent: 2008/0128652 (2008-06-01), Dobashi et al.
patent: 2009/0192299 (2009-07-01), Chromy et al.
patent: 2001-081098 (2001-03-01), None
patent: 2002-018270 (2002-01-01), None
patent: 2006-096987 (2006-04-01), None
patent: 2007-084615 (2007-04-01), None
patent: WO 02/10262 (2002-02-01), None
patent: WO 2006/025244 (2006-03-01), None

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