Title:
ULTRAVIOLET ABSORBER HAVING EXCELLENT HEAT RESISTANCE AND LONG-WAVELENGTH ABSORPTION
Document Type and Number:
WIPO Patent Application WO/2020/218609
Kind Code:
A1
Abstract:
Provided is an ultraviolet absorber which has particularly favorable heat resistance, suppression of odor during thermal decomposition, and long-wavelength absorption, and has a high molar extinction coefficient, compared with conventional ultraviolet absorbers. This ultraviolet absorber comprises a 2-phenylbenzotriazole derivative having a bonding group represented by formula (I) or (II): (In formula (I): X represents a nitrogen atom, an oxygen atom, or a residue obtained by removing a hydrogen atom from an amide group; l represents an integer of 0 or 1; Y1 represents an aromatic hydrocarbon group which may have a substituent; m is 1 when X is a nitrogen atom or a residue obtained by removing a hydrogen atom from an amide group, and is 0 when X is an oxygen atom; Y2 represents a hydrogen atom, an aliphatic hydrocarbon group which may have a substituent, or an aromatic hydrocarbon group which may have a substituent.) (In formula (II), Y3 forms a heterocyclic ring which may have a substituent, together with the nitrogen atom N.)
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Inventors:
KANEKO NOBUHIRO (JP)
NAKAMURA DAISUKE (JP)
KANEKO KOTARO (JP)
KAWAI KOJI (JP)
NAKAMURA DAISUKE (JP)
KANEKO KOTARO (JP)
KAWAI KOJI (JP)
Application Number:
PCT/JP2020/017965
Publication Date:
October 29, 2020
Filing Date:
April 27, 2020
Export Citation:
Assignee:
MIYOSHI YUSHI KK (JP)
International Classes:
C09K3/00; C07D249/20
Domestic Patent References:
| WO2003029227A1 | 2003-04-10 | |||
| WO2016021664A1 | 2016-02-11 | |||
| WO2016174788A1 | 2016-11-03 |
Foreign References:
| JP2019056048A | 2019-04-11 | |||
| JP2015214692A | 2015-12-03 | |||
| JP2002521705A | 2002-07-16 | |||
| CN108947920A | 2018-12-07 | |||
| JP2000119260A | 2000-04-25 | |||
| JP2002169020A | 2002-06-14 | |||
| JPS61176640A | 1986-08-08 | |||
| JP2002172865A | 2002-06-18 | |||
| JP2009541416A | 2009-11-26 |
Other References:
"The Japan Plastics Industry Federation", NIPPON JITSUGYO PUBLISHING, article "Easily understandable plastics"
See also references of EP 3960831A4
See also references of EP 3960831A4
Attorney, Agent or Firm:
USHIKI & ASSOCIATES (JP)
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