Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2004-04-27
2009-06-02
Truong, Duc (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C430S270100
Reexamination Certificate
active
07541411
ABSTRACT:
The norbornene derivative of the present invention is represented by the following formula (Im).According to the present invention, a novel norbornene derivative that is useful as a precursor monomer for preparing a cycloolefin polymer exhibiting excellent transparency, heat resistance and low-water absorption properties and having been freely controlled in the birefringence properties and the wavelength dispersion properties can be provided. According to the present invention, further, a norbornene ring-opened (co)polymer having excellent transparency and heat resistance, exhibiting high solubility in organic solvents and having specific birefringence properties and wavelength dependence, and a process for preparing the ring-opened (co)polymer can be provided.
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Goto Kohei
Hashiguchi Yuichi
Miyaki Nobuyuki
Miyamoto Yoshikazu
JSR Corporation
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Truong Duc
LandOfFree
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