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Title:
POLYCARBONATE RESIN, METHOD FOR PRODUCING SAME AND OPTICAL LENS
Document Type and Number:
WIPO Patent Application WO/2019/044875
Kind Code:
A1
Abstract:
Provided is a polycarbonate resin which has high refractive index, low Abbe number and high wet heat resistance. One embodiment of the present invention provides a polycarbonate resin which contains a constituent unit represented by general formula (1). (In formula (1), each of R1 and R2 independently represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, an alkyl group having 1-6 carbon atoms, an aryl group having 6-36 carbon atoms, a monocyclic or polycyclic heteroaryl group having 5-36 ring atoms, wherein one, two, three or four ring atoms are selected from among nitrogen atoms, sulfur atoms and oxygen atoms and the other ring atoms are carbon atoms, an alkenyl group having 2-6 carbon atoms, an alkoxy group having 1-6 carbon atoms or an aralkyl group having 7-17 carbon atoms; the monocyclic or polycyclic aryl group and the monocyclic or polycyclic heteroaryl group are not substituted or have one or two Ra groups selected from the group consisting of CN, CH3, OCH3, O-phenyl, O-naphthyl, S-phenyl, S-naphthyl and halogens; R1 and R2 are not hydrogen atoms at the same time; X represents an alkylene group having 1-8 carbon atoms, a cycloalkylene group having 5-12 carbon atoms or an arylene group having 6-20 carbon atoms; the alkylene group and the cycloalkylene group may be respectively substituted so as to have a benzene ring; and each of a and b represents an integer of 1-10.)

Inventors:
SHIRATAKE MUNENORI (JP)
ISHIHARA KENTARO (JP)
HIROSE KOJI (JP)
IKEDA SHINYA (JP)
KATO NORIYUKI (JP)
KONDO MITSUTERU (JP)
SUZUKI SHOKO (JP)
OSHIMA KENSUKE (JP)
NAGAYAMA SHUYA (JP)
Application Number:
PCT/JP2018/031880
Publication Date:
March 07, 2019
Filing Date:
August 29, 2018
Export Citation:
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Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
International Classes:
C08G64/04; G02B1/04
Domestic Patent References:
WO2015129921A12015-09-03
WO2015166951A12015-11-05
WO2014073496A12014-05-15
WO2015170691A12015-11-12
WO2018016516A12018-01-25
WO2007142149A12007-12-13
Foreign References:
JP2001072872A2001-03-21
JP2014185325A2014-10-02
JP2017179323A2017-10-05
JPH0625398A1994-02-01
JP2014185325A2014-10-02
JP2014227387A2014-12-08
JP2014227388A2014-12-08
JP2015168658A2015-09-28
JP2015187098A2015-10-29
JPS5442800B21979-12-15
JP2014028806A2014-02-13
Other References:
See also references of EP 3677615A4
Attorney, Agent or Firm:
KOBAYASHI Hiroshi et al. (JP)
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