Thermoplastic resin composition and optical member using same

Patent metadata

Field	Value
Publication number	US-12286532-B2
Application number	US-201917414407-A
Country	US
Kind code	B2
Filing date	Dec 24, 2019
Priority date	Dec 27, 2018
Publication date	Apr 29, 2025
Grant date	Apr 29, 2025

Abstract

A thermoplastic resin composition that cuts visible light and has infrared light transmittance. A thermoplastic resin composition including a thermoplastic resin and a coloring material, wherein the refractive index at a wavelength of 894 nm is 1.60 or greater, and when the thickness of the thermoplastic resin composition is 1 mm, the maximum value of the transmittance of wavelengths of 380 nm-630 nm is greater than 0% and less than or equal to 1.00%, and the average transmittance of wavelengths of 840 nm-940 nm is greater than or equal to 80%.

First claim

The invention claimed is:

1. A thermoplastic resin composition comprising:
a thermoplastic resin; and
a coloring material,

wherein:
the refractive index at a wavelength of 894 nm is 1.60 or higher; and
when the thickness of said thermoplastic resin composition is 1 mm, the maximum transmittance at wavelengths of 380-630 nm is more than 0% and less or equal to 1.00%, and the average transmittance at wavelengths of 840-940 nm is 80% or more,
wherein the thermoplastic resin comprises, as a monomer, at least one diol compound selected from the group consisting of compounds represented by General formulae (I) and (II) below; and at least one compound selected from the group consisting of compounds represented by General formulae (III), and (V) below:

wherein in General formula (I),
R 1 -R 4 each independently represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a C1-C6 alkyl group, or a C6-C20 aryl group, a C2-C6 alkenyl group, a C1-C6 alkoxy group or a C7-C17 aralkyl group which may contain a heterocyclic atom selected from an oxygen atom, a nitrogen atom and a sulfur atom,
p, q, r and s each independently represents an integer of 0-4, and
R is

wherein i represents an integer of 0-10, ii represents an integer of 1-10, and iii represents an integer of 1-10;

wherein in General formula (II),
R 6 and R 7 are synonymous with R 1 -R 4 ,
n and m represent an integer of 0-5,
Y represents a C1-C5 alkylene group, and
n1 and n2 each independently represents an integer of 0-10;

wherein in General formula (III),
R 8 and R 9 are synonymous with R 1 -R 4 ,
a and b represent an integer of 0-4,
Y represents a C1-C5 alkylene group, and
n1 and n2 each independently represents an integer of 0-10; and

wherein in General formula (V),
R 1 and R 2 each independently represents a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a C1-C6 alkyl group, or a C6-C20 aryl group, a C2-C6 alkenyl group, a C1-C6 alkoxy group or a C7-C17 aralkyl group which may contain a heterocyclic atom selected from an oxygen atom, a nitrogen atom and a sulfur atom, and
a and b represent an integer of 0-4.

2. The thermoplastic resin composition according to claim 1 , wherein the thermoplastic resin comprises a resin selected from the group consisting of a polycarbonate resin, a polyester resin and a polyester carbonate resin.

3. The thermoplastic resin composition according to claim 1 , wherein the coloring material comprises at least one of a green pigment, a red pigment, a yellow pigment and a purple pigment.

4. The thermoplastic resin composition according to claim 1 , wherein the coloring material comprises at least one of an anthraquinone-based pigment, a perinone-based pigment, a methine-based pigment, an isoindoline-based pigment, a phthalocyanine-based pigment, a quinacridone-based pigment, an azo-based pigment and a lake pigment.

5. The thermoplastic resin composition according to claim 1 , wherein when the thickness of said thermoplastic resin composition is 1 mm, the maximum transmittance at wavelengths of 380-630 nm is more than 0% and less or equal to 0.8%.

6. The thermoplastic resin composition according to claim 1 , wherein when the thickness of said thermoplastic resin composition is 1 mm, the maximum transmittance at wavelengths of 380-630 nm is more than 0% and less or equal to 0.5%.

7. An optical lens comprising the thermoplastic resin composition according to claim 1 .

8. An infrared camera lens comprising the thermoplastic resin composition according to claim 1 .

9. A biometric authentication camera lens comprising the thermoplastic resin composition according to claim 1 .

10. The thermoplastic resin composition according to claim 1 , wherein the coloring material comprises an anthraquinone-based pigment, a perinone-based pigment, or a methine-based pigment.

11. The thermoplastic resin composition according to claim 1 , comprising, as a monomer, the compound represented by General formula (V).

Assignees

• Mitsubishi Gas Chemical Co

Inventors

• Motegi Atsushi
• Ishihara Kentaro
• NISHIMORI Katsushi
• Ikeda Shinya
• Kato Noriyuki
• Kondo Mitsuteru
• Oshima Kensuke
• Kanda Masahiro
• Suzuki Shoko
• OGATA Tatsunobu
• Suematsu Mitsutake

Classifications

• G02B5/22

  Absorbing filters {(G02B5/201 - G02B5/208 take precedence)} · CPC title

• G02B1/041

  Lenses · CPC title

• C08L67/025

  containing polyether sequences · CPC title

• C08K5/0041 Primary

  Optical brightening agents, organic pigments · CPC title

• C08G64/06 Primary

  not containing aliphatic unsaturation · CPC title