Composition, cured film, color filter, light shielding film, optical element, solid-state imaging element, headlight unit, modified silica particles, and method for producing modified silica particles

Patent metadata

Field	Value
Publication number	US-2022010121-A1
Application number	US-202117485493-A
Country	US
Kind code	A1
Filing date	Sep 26, 2021
Priority date	Mar 29, 2019
Publication date	Jan 13, 2022
Grant date	—

Abstract

The present invention provides a composition having excellent development residue suppressibility. Moreover, also provided are a cured film, a color filter, a light shielding film, an optical element, a solid-state imaging element, a headlight unit, modified silica particles, and a method for producing modified silica particles. The composition according to the embodiment of the present invention contains modified silica particles and a polymerizable compound, in which the modified silica particles each contain a silica particle and a coating layer coating the silica particle, and the coating layer contains a polymer containing a repeating unit represented by General Formula (1).

First claim

What is claimed is:

1 . A composition comprising:
modified silica particles; and a polymerizable compound, wherein the modified silica particles each contain a silica particle and a coating layer coating the silica particle, and the coating layer contains a polymer containing a repeating unit represented by General Formula (1),

in General Formula (1), R S1 represents an alkyl group which may have a substituent, or a hydrogen atom,
L S1 represents a single bond or a divalent linking group,
S S1 represents a group containing —SiR S2 2 —O—,
R S2 represents a hydrocarbon group which may have a substituent and has 1 to 20 carbon atoms, and
a plurality of R S2 's may be the same as or different from each other.

2 . The composition according to claim 1 ,
wherein S S1 is a group represented by General Formula (2),

in General Formula (2), * represents a bonding position,
sa represents an integer of 1 to 1,000,
R S3 represents a hydrocarbon group, which may have a substituent and has 1 to 20 carbon atoms, or a group represented by General Formula (3), and
a plurality of R S3 's may be the same as or different from each other, and

in General Formula (3), * represents a bonding position,
sb represents an integer of 0 to 300,
R S4 represents a hydrocarbon group which may have a substituent and has 1 to 20 carbon atoms, and
a plurality of R S4 's may be the same as or different from each other.

3 . The composition according to claim 1 ,
wherein the modified silica particles have a weight loss rate equal to or greater than 5.0% by mass in a temperature range of 200° C. to 500° C. in a case where thermogravimetric measurement is performed by raising the temperature from 23° C. to 500° C. at a temperature raising rate of 10° C./min in an inert gas atmosphere.

4 . The composition according to claim 3 ,
wherein the weight loss rate is 8.0% to 15.0% by mass.

5 . The composition according to claim 1 ,
wherein a number-average particle diameter of the modified silica particles is 1 to 200 nm.

6 . The composition according to claim 1 ,
wherein, in the polymer, a content of the repeating unit represented by General Formula (1) is 90% to 100% by mass with respect to a total content of the repeating unit represented by General Formula (1) and a repeating unit containing no silicon atom.

7 . The composition according to claim 1 , further comprising a black coloring material.

8 . The composition according to claim 7 ,
wherein the black coloring material is particles containing titanium or zirconium.

9 . The composition according to claim 7 ,
wherein a mass ratio of a content of the modified silica particles to a content of the black coloring material in the composition is 0.010 to 0.250.

10 . The composition according to claim 1 ,
wherein other silica particles, which are other than the modified silica particles and each contain the silica particle, are not contained, or the other silica particles are contained, and a content of the modified silica particles is equal to or greater than 80% by mass and less than 100% by mass with respect to a total content of the modified silica particles and the other silica particles.

11 . The composition according to claim 1 ,
wherein a content of the modified silica particles is 0.5% to 13.0% by mass with respect to a total solid content of the composition.

12 . A cured film which is formed of the composition according to claim 1 .

13 . A color filter comprising the cured film according to claim 12 .

14 . A light shielding film comprising the cured film according to claim 12 .

15 . An optical element comprising the cured film according to claim 12 .

16 . A solid-state imaging element comprising the cured film according to claim 12 .

17 . A headlight unit for a vehicle lighting tool, comprising:
a light source; and a light shielding part which shields at least a part of light emitted from the light source, wherein the light shielding part includes the cured film according to claim 12 .

18 . Modified silica particles comprising:
silica particles; and coating layers which coat the silica particles, wherein the coating layers each contain a polymer containing a repeating unit represented by General Formula (1),

in General Formula (1), R S1 represents an alkyl group which may have a substituent, or a hydrogen atom,
L S1 represents a single bond or a divalent linking group,
S S1 represents a group containing —SiR S2 2 —O—,
R S2 represents a hydrocarbon group which may have a substituent and has 1 to 20 carbon atoms, and
a plurality of R S2 's may be the same as or different from each other.

19 . The modified silica particles according to claim 18 ,
wherein S S1 is a group represented by General Formula (2),

in General Formula (2), * represents a bonding position,
sa represents an integer of 1 to 1,000,
R S3 represents a hydrocarbon group, which may have a substituent and has 1 to 20 carbon atoms, or a group represented by General Formula (3), and
a plurality of R S3 's may be the same as or different from each other, and

in General Formula (3), * represents a bonding position,
sb represents an integer of 0 to 300,
R S4 represents a hydrocarbon group which may have a substituent and has 1 to 20 carbon atoms, and
a plurality of R S4 's may be the same as or different from each other.

20 . The modified silica particles according to claim 18 ,
wherein the modified silica particles have a weight loss rate equal to or greater than 5.0% by mass in a temperature range of 200° C. to 500° C. in a case where thermogravimetric measurement is performed by raising the temperature from 23° C. to 500° C. at a temperature raising rate of 10° C./min in an inert gas atmosphere.

21 . The modified silica particles according to claim 20 ,
wherein the weight loss rate is 8.0% to 15.0% by mass.

22 . The modified silica particles according to claim 18 ,
wherein a number-average particle diameter of the modified silica particles is 1 to 200 nm.

23 . The modified silica particles according to claim 18 ,
wherein, in the polymer, a content of the repeating unit represented by General Formula (1) is 90% to 100% by mass with respect to a total content of the repeating unit represented by General Formula (1) and a repeating unit containing no silicon atom.

24 . A method for producing modified silica particles comprising a step of coating a silica particle by polymerizing an ethylenically unsaturated group of a coating precursor layer in a modified silica particle precursor, which contains the s

Assignees

• Fujifilm Corp

Inventors

• Kato Ryosuke

Classifications

• H10F39/12

  Image sensors · CPC title

• H10F39/8053

  Colour filters · CPC title

• G02B5/223

  containing organic substances, e.g. dyes, inks or pigments · CPC title

• G02B5/201

  in the form of arrays · CPC title

• G02B5/003

  Light absorbing elements · CPC title