HYDROGENATED AROMATIC VINYL-BASED COPOLYMER COMPOSITION AND SUBSTRATE USING THE SAME AND USED FOR OPTICAL DISK

Title:

HYDROGENATED AROMATIC VINYL-BASED COPOLYMER COMPOSITION AND SUBSTRATE USING THE SAME AND USED FOR OPTICAL DISK

Document Type and Number:

Japanese Patent JP2002212380

Kind Code:

A

Abstract:

To provide a hydrogenated aromatic vinyl-based copolymer composition which has high melt flowability, good toughness and high elastic modulus.

This hydrogenated aromatic vinyl-based copolymer composition comprises 75 to 97 wt.% of a polymer obtained by hydrogenating an aromatic vinyl compound-conjugated diene block copolymer and 25 to 3 wt.% of a polymer obtained by hydrogenating ≥50 mol.% of aromatic rings in an aromatic vinyl copolymer having a weight mol.wt. of 2,000 to 10,000.

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Inventors:

SASAKI TAKESHI
NITTA HIDEAKI
MATSUMURA SHUNICHI
KIDO NOBUAKI

Application Number:

JP2001004788A

Publication Date:

July 31, 2002

Filing Date:

January 12, 2001

Export Citation:

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Assignee:

TEIJIN LTD

International Classes:

C08L53/02; C08F8/04; G11B7/2533; (IPC1-7): C08L53/02; C08F8/04; G11B7/24

Attorney, Agent or Firm:

Maeda Junhiro

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