Highly stable resin, hardenable resin composition,...

Details Highly stable resin, hardenable resin composition,... Highly stable resin, hardenable resin composition,...

2000-08-10

2009-06-23

Feely, Michael J (Department: 1796)

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

Synthetic resins

Treating polymer containing material or treating a solid...

C528S044000, C528S069000, C528S075000, C528S080000, C528S081000, C528S084000, C528S085000, C528S480000, C528S491000, C528S496000

Reexamination Certificate

active

07550556

ABSTRACT:
The present invention is to prevent the rapid viscosity rise generated at the time of dissolving or dispersing in a solvent a polymer obtained by reacting a material polymer having an acidic functional group and a hydroxyl group in the principal chain part with an isocyanate compound, in particular, a photo-curing polymer obtained by reaction with a radical polymerizable group-containing isocyanate compound. A highly stable polymer can be obtained by reacting a material polymer having a principal chain including at least a component unit having an acidic functional group and a component unit having a hydroxyl group with an isocyanate compound, and further reacting the same with an alcohol. Moreover, by producing a material polymer using a non-nitrile azo-based or peroxide-based polymerization initiator and/or introducing an isocyanate compound using a polymerization inhibitor selected from the compounds represented by the above-mentioned formulae (10) and (16), the transparency can be improved. A photo-curing polymer obtained in the present invention is suited for forming a protection film of a color filter and a column-like spacer of a liquid crystal panel.

REFERENCES:
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patent: 6432614 (2002-08-01), Ueda et al.
patent: 6558858 (2003-05-01), Ueda et al.
patent: 0 977 085 (2000-02-01), None
patent: 768119 (1957-02-01), None
patent: 1384343 (1975-02-01), None
patent: WO 95/00573 (1995-01-01), None

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