Block copolymer, process for producing the same, and molded...

Details Block copolymer, process for producing the same, and molded... Block copolymer, process for producing the same, and molded...

2005-11-15

2005-11-15

Choi, Ling-Sui (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S346000, C526S335000, C525S338000

Reexamination Certificate

active

06965003

ABSTRACT:
A block copolymer comprising a polymer block [A] and a polymer block [B]. The polymer block [A] contains mainly a repeating unit having an alicyclic structure, and the polymer block [B] contains the repeating unit having an alicyclic structure and a repeating unit derived from a diene based monomer and/or a vinyl based monomer. In any block, the carbon-carbon unsaturated bonds are hydrogenated. The block copolymer is molded into optical disks, optical waveguides, films, sheets, containers, and optical lenses.

REFERENCES:
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patent: 01-294721 (1989-11-01), None
patent: 01-317728 (1989-12-01), None
patent: 06-199950 (1994-07-01), None
patent: 06 199950 (1994-07-01), None
patent: WO 94/21694 (1994-09-01), None
patent: WO 98/55886 (1998-12-01), None

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