Polyester resin or polyester carbonate resin, and optical member using said resin

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United States of America Patent

PATENT NO 11566102
APP PUB NO 20210002420A1
SERIAL NO

16976840

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Abstract

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The purpose of the present invention is to provide a polyester resin or polyester carbonate resin, which has high refractive index, while achieving an excellent balance between heat resistance and low birefringence. A polyester resin or a polyester carbonate resin, which contains repeating units represented by the following formulae (1) and (2), and wherein the ratio of the repeating unit represented by formula (1) to the repeating unit represented by formula (2) is 15:85 to 85:15. (In formula (1), each of rings Z1 and Z2 represents a polycyclic aromatic hydrocarbon group having 9-20 carbon atoms; each of R1, R2, R7 and R8 independently represents a hydrocarbon group which may contain an aromatic group having 1-12 carbon atoms; each of R3-R6 and R9-R16 represents a hydrogen atom or an aliphatic or aromatic substituents; each of j, k, r and s independently represent an integer of 0 or more; and each of m, n, p and q independently represents 1 or 2) (In formula (2), each of R7, R8, R17 and R18 independently represent a hydrocarbon group which may contain an aromatic group having 1-12 carbon atoms; each of R9-R16 and R19-R26 represents a hydrogen atoms or an aliphatic or aromatic substituents; and each of r, s, t and u independently represents an integer of 0 or more.)

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Patent Owner(s)

Patent OwnerAddress
TEIJIN LIMITED2-4 NAKANOSHIMA 3-CHOME KITA-KU OSAKA-SHI OSAKA 5300005 ?5300005

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Matsui, Manabu Osaka, JP 24 219
Nunome, Kazunori Osaka, JP 9 16
Ogasawara, Kazuyoshi Osaka, JP 35 222
Oyama, Tatsuya Osaka, JP 18 140
Sato, Keisuke Osaka, JP 120 1093
Yamada, Kyosuke Osaka, JP 10 4
Yanagida, Takatsune Osaka, JP 12 45

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