LIGHT-ABSORBING COMPOSITION, LIGHT-ABSORBING FILM, AND OPTICAL FILTER

Title:

LIGHT-ABSORBING COMPOSITION, LIGHT-ABSORBING FILM, AND OPTICAL FILTER

Document Type and Number:

WIPO Patent Application WO/2020/235610

Kind Code:

A1

Abstract:

A light-absorbing composition pertaining to the present invention can provide a light-absorbing film having desired characteristics, by curing a coating film of the light-absorbing composition containing a curable resin and a light absorber formed by a copper ion and a phosphonic acid represented by formula (A). In formula (A), R1 through R5 each independently represent a hydrogen atom, a halogen atom, a hydroxy group, or a nitro group, and n is an integer from 1 to 3.

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Inventors:

KUBO YUICHIRO (JP)
SHIMMO KATSUHIDE (JP)
CAI LEI (JP)
MASUDA HITOMI (JP)

Application Number:

PCT/JP2020/020005

Publication Date:

November 26, 2020

Filing Date:

May 20, 2020

Export Citation:

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Assignee:

NIPPON SHEET GLASS CO LTD (JP)

International Classes:

G02B5/22

Foreign References:

JPS6232161B2	1987-07-13
JP2012201865A	2012-10-22
JP2012087243A	2012-05-10
JP2002069305A	2002-03-08

Attorney, Agent or Firm:

KAMADA Koichi et al. (JP)

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