Title:
NEAR-INFRARED ABSORBER
Document Type and Number:
Japanese Patent JP3887913
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a near-infrared absorber excellent in both near-infrared absorptivity and optical properties and capable of low-temperature molding by curing a photocurable resin composition containing a specified near-infrared absorber.
SOLUTION: This absorber comprises a photocurable resin composition containing a near infrared absorber and having a transmittance of 50% or above to visible light at 400-700 nm and a transmittance of 10% or below to near-infrared light at 800-1,000 nm. The absorber is desirably in the form of a sheet. The photocurable resin is desirably one comprising at least bis(meth) acrylate of formula I or II. In formula I, R1 and R2 are each hydrogen or methyl; R3 and R4 are each a 1-6C hydrocarbon group; X is a halogen, a 1-6C alkyl, or the like; and (a) is 0-4. In formula II, R5 and R6 are each H or methyl; (b) is 1 or 2; and (c) is 0 or 1. The near-infrared absorber used is desirably an immonium compound, a diimmonium compound, or an aluminum salt compound.
Inventors:
Kazuhisa Miyashita
Akihiko Sakai
Tetsuya Kubota
Tomomi Nakano
Akihiko Sakai
Tetsuya Kubota
Tomomi Nakano
Application Number:
JP31036897A
Publication Date:
February 28, 2007
Filing Date:
November 12, 1997
Export Citation:
Assignee:
Mitsubishi Chemical Corporation
International Classes:
B32B27/18; G02B5/22; C08F20/20; C08F20/38; C08F222/10; C08K5/16; C08L33/04; (IPC1-7): C08F20/38; B32B27/18; C08F20/20; C08K5/16; C08L33/04
Domestic Patent References:
| JP5194672A | ||||
| JP43025335B1 | ||||
| JP1121370A |
Attorney, Agent or Firm:
Hasegawa Soji