US Patent No: 5,276,098

Number of patents in Portfolio can not be more than 2000

Thermoplastic saturated norbornene group polymer composition

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Abstract

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A composition including a thermoplastic saturated norbornene group polymer and a partially etherified product of a polyhydric alcohol having at least 3 hydroxyl groups incorporated thereinto. The composition exhibits excellent adhesion to the recording film of an optical disk and adhesion to a hard coating film or a protective film formed by coating an acrylic ultraviolet curing coating material or like films without deteriorating the excellent heat resistance and transparency inherent to thermoplastic saturated norbornene group polymers. An optical disk substrate formed of this composition and an optical disk including the optical disk substrate and an information recording film and/or a light reflecting film and a protective film laminated thereon are also disclaimed.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
NIPPON ZEON CO., LTD.TOKYO158

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kohara, Teiji Kawasaki, JP 46 475
Natsuume, Tadao Yokosuka, JP 44 497

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Nippon Zeon Co., Ltd. (1)
* 5,063,096 Optical disk 12 1990
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
SABIC INNOVATIVE PLASTICS IP B.V. (4)
7,087,290 Data storage media utilizing a substrate including a plastic resin layer, and method thereof 9 2001
6,752,952 Embossing methods 2 2001
6,715,200 Methods for making data storage media 3 2001
7,179,551 Poly(arylene ether) data storage media 0 2002
 
Nippon Zeon Co., Ltd. (1)
* 5,462,995 Hydrogenated products of thermoplastic norbornene polymers, their production, substrates for optical elements obtained by molding them, optical elements and lenses 36 1993
 
TICONA GMBH (1)
* 5,744,664 Cycloolefin copolymers (COCS) as substrate material for liquid-crystal displays 25 1994
* Cited By Examiner