Surface-modified inorganic nitride, composition, thermally conductive material, and device with thermally conductive layer

Patent metadata

Field	Value
Publication number	US-11945718-B2
Application number	US-202016739590-A
Country	US
Kind code	B2
Filing date	Jan 10, 2020
Priority date	Jul 14, 2017
Publication date	Apr 2, 2024
Grant date	Apr 2, 2024

Abstract

A first object of the present invention is to provide a surface-modified inorganic nitride having excellent dispersibility. Furthermore, a second object of the present invention is to provide a composition, a thermally conductive material, and a device with a thermally conductive layer which contain the surface-modified inorganic nitride.
The surface-modified inorganic nitride of the present invention includes an inorganic nitride, and a compound which is represented by General Formula (I) and is adsorbed onto a surface of the inorganic nitride.

In General Formula (1), n represents an integer of 3 or greater. X represents an aromatic hydrocarbon ring group or an aromatic heterocyclic group. Y represents a single bond, —O—, —CO—, —CO—O—, —O—CO—, —S—, —CS—, —NR A —, —N═N—, or a divalent unsaturated hydrocarbon group. R A represents a hydrogen atom or an alkyl group. R 1 and R 2 each independently represent a substituent. Here, at least one of R 1 or R 2 represents a monovalent organic group containing a specific functional group selected from the group A of specific functional groups.
In General Formula (1), a plurality of X's may be the same as or different from each other. Moreover, a plurality of Y's may be the same as or different from each other.

First claim

What is claimed is:

1. A surface-modified inorganic nitride comprising:
an inorganic nitride; and
a compound which is represented by General Formula (I) and is adsorbed onto a surface of the inorganic nitride,

in General Formula (1), n represents an integer of 3 or greater; X represents an aromatic hydrocarbon ring group or an aromatic heterocyclic group; Y represents a single bond, —O—, —CO—, —CO—O—, —O—CO—, —S—, —CS—, —NR A −, —N═N—, or a divalent unsaturated hydrocarbon group; R A represents a hydrogen atom or an alkyl group; R 1 and R 2 each independently represent a hydrogen atom or a substituent; and here, at least one of R 1 or R 2 represents an organic group containing a specific functional group selected from the following group A of specific functional groups, and
in General Formula (1), a plurality of X's may be the same as or different from each other; and a plurality of Y's may be the same as or different from each other,
Group A of specific functional groups:
an aldehyde group, an isothiocyanate group, a cyanate group, an acyl azide group, a succinimide group, a sulfonyl chloride group, a carboxylic acid chloride group, an onium group, a carbonate group, an aryl halide group, a carbodiimide group, an acid anhydride group, an ester group, a carbonyl group, a carboxylic acid group, a phosphonic acid group, a phosphinic acid group, a phosphoric acid group, a phosphoric acid ester group, a sulfonic acid group, a halogenated alkyl group, a halogen atom, a nitrile group, a nitro group, an imidoester group, an alkoxysilyl group, an oxetanyl group, a vinyl group, an alkynyl group, a maleimide group, a thiol group, a hydroxyl group, and an amino group.

2. The surface-modified inorganic nitride according to claim 1 ,
wherein X is an aromatic hydrocarbon ring group.

3. The surface-modified inorganic nitride according to claim 2 ,
wherein the aromatic hydrocarbon ring group is a benzene ring group.

4. The surface-modified inorganic nitride according to claim 2 ,
wherein n is an integer of 4 or greater.

5. The surface-modified inorganic nitride according to claim 2 ,
wherein both of R 1 and R 2 represent an organic group containing a specific functional group selected from the group A of specific functional groups.

6. The surface-modified inorganic nitride according to claim 3 ,
wherein n is an integer of 4 or greater.

7. The surface-modified inorganic nitride according to claim 3 ,
wherein both of R 1 and R 2 represent an organic group containing a specific functional group selected from the group A of specific functional groups.

8. The surface-modified inorganic nitride according to claim 1 ,
wherein n is an integer of 4 or greater.

9. The surface-modified inorganic nitride according to claim 1 ,
wherein both of R 1 and R 2 represent an organic group containing a specific functional group selected from the group A of specific functional groups.

10. The surface-modified inorganic nitride according to claim 9 ,
wherein one of R 1 and R 2 represents an organic group containing a specific functional group selected from the following group B of specific functional groups, and the other of R 1 and R 2 represents an organic group containing a specific functional group selected from the following group C of specific functional groups,
Group B of specific functional groups:
an aldehyde group, an isothiocyanate group, a cyanate group, an acyl azide group, a succinimide group, a sulfonyl chloride group, a carboxylic acid chloride group, an onium group, a carbonate group, an aryl halide group, a carbodiimide group, an ester group, a carbonyl group, a phosphonic acid group, a phosphinic acid group, a phosphoric acid group, a phosphoric acid ester group, a sulfonic acid group, a halogenated alkyl group, a halogen atom, a nitrile group, a nitro group, an imidoester group, an alkoxysilyl group, an oxetanyl group, an alkynyl group, and a maleimide group
Group C of specific functional groups:
a hydroxyl group, an acid anhydride group, a carboxylic acid group, a vinyl group, a thiol group, and an amino group.

11. The surface-modified inorganic nitride according to claim 1 ,
wherein the inorganic nitride is at least one kind of nitride selected from the group consisting of boron nitride and aluminum nitride.

12. The surface-modified inorganic nitride according to claim 11 ,
wherein the inorganic nitride is boron nitride.

13. A composition comprising:
the surface-modified inorganic nitride according to claim 1 ; and
a polymerizable monomer.

14. The composition according to claim 13 ,
wherein the polymerizable monomer has a group selected from the group consisting of an acryloyl group, a methacryloyl group, an oxiranyl group, an oxetanyl group, and a vinyl group.

15. The composition according to claim 13 ,
wherein the polymerizable monomer or a cured substance thereof exhibits liquid crystallinity.

16. The composition according to claim 13 that is used for forming a thermally conductive material.

17. A thermally conductive material comprising the surface-modified inorganic nitride according to claim 1 .

18. The thermally conductive material according to claim 17 that is in the form of a sheet.

19. The thermally conductive material according to claim 17 that is used in a heat dissipation sheet.

20. A device with a thermally conductive layer, comprising:
a device; and
a thermally conductive layer which is disposed on the device and contains the thermally conductive material according to claim 17 .

Assignees

• Fujifilm Corp

Inventors

• Hitomi Seiichi
• Takahashi Keita
• Hayashi Naoyuki

Classifications

• H10W40/251

  Organics · CPC title

• H10W40/10

  Arrangements for heating · CPC title

• C01B21/0648 Primary

  After-treatment, e.g. grinding, purification (transformation of hexagonal into cubic or wurtzitic boron nitride C04B35/5831) · CPC title

• C01B21/0728

  After-treatment, e.g. grinding, purification · CPC title

• C08F292/00

  Macromolecular compounds obtained by polymerising monomers on to inorganic materials · CPC title