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US 2026/0209476 A1Published application
Aluminum nitride filler, method for producing aluminum nitride filler, resin composition, and method for producing resin composition
AssigneeResonac Corporation
InventorsNaoki MINORIKAWA, Takeshi IEMURA, Hajime FUNAHASHI
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Abstract
Provided are an aluminum nitride filler, and a method for producing the same, including aluminum nitride particles and a film (a) including a compound (A) having a polyethyleneimine backbone and a polyalkylene oxide chain, and having a weight average molecular weight of 2000 or more and 10000 or less.
Claims14
1:
- An aluminum nitride filler comprising:
- aluminum nitride particles;
- and
- a film (a) comprising a compound (A) having a polyethyleneimine backbone and a polyalkylene oxide chain, and having a weight average molecular weight of 2000 or more and 10000 or less, wherein the content of compound (A) in the film (a) is 80 mass % or more.
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2:
- The aluminum nitride filler according to claim 1, comprising a silicon-containing oxide film (b).
3:
- The aluminum nitride filler according to claim 1, comprising an organosilicone compound film (c) having a silanol group.
4:
- The aluminum nitride filler according to claim 3, wherein the film (a) and the organosilicone compound film (c) are adjacent.
5:
- The aluminum nitride filler according to claim 1, comprising 5.0×10−4 g or more and less than 5.0×10−2 g of the compound (A) per 1 m2 of surface area calculated from a specific surface area (m2/g) of the aluminum nitride particles determined by a BET method.
6:
- The aluminum nitride filler according to claim 2, comprising 5.0×10−4 g or more and less than 5.0×10−2 g of the compound (A) per 1 m2 of surface area calculated from a specific surface area (m2/g) of a particle comprising the silicon-containing oxide film (b) and the aluminum nitride particle determined from a BET method.
7:
- The aluminum nitride filler according to claim 3, comprising 5.0×10−4 g or more and less than 5.0×10−2 g of the compound (A) per 1 m2 of surface area calculated from a specific surface area (m2/g) of a particle comprising the organosilicone compound film (c) having a silanol group and the aluminum nitride particle determined by a BET method.
8:
- The aluminum nitride filler according to claim 2, comprising an organosilicone compound film (c) having a silanol group, and 5.0×10−4 g or more and less than 5.0×10−2 g of the compound (A) per 1 m2 of surface area calculated from a specific surface area (m2/g) of a particle comprising the silicon-containing oxide film (b), the organosilicone compound film (c) having a silanol group, and the aluminum nitride particle determined by a BET method.
9:
- A method for producing an aluminum nitride filler comprising aluminum nitride particles and a film (a) comprising a compound (A) having a polyethyleneimine backbone and a polyalkylene oxide chain, and having a weight average molecular weight of 2000 or more and 10000 or less,
- wherein
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10:
- The method for producing an aluminum nitride filler according to claim 9, comprising:
- a first step of performing coating with an organosilicone compound having an active hydrogen;
- and
- a second step of forming a silicon-containing oxide film (b) by heating.
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11:
- The method for producing an aluminum nitride filler according to claim 9, comprising a third step of forming an organosilicone compound film (c) having a silanol group by performing coating with an organosilicone compound having an active hydrogen by vapor deposition and treating the organosilicone compound used in the coating with a basic substance.
12:
- A resin composition comprising the aluminum nitride filler according to claim 1 and an epoxy resin.
13:
- A method for producing the resin composition according to claim 12, comprising a step I of admixing the aluminum nitride filler to the epoxy resin.
14:
- A method for producing the resin composition according to claim 12, comprising:
- a step II-1 of obtaining a composition i comprising the compound (A) and the epoxy resin;
- and
- a step II-2 of admixing, to the composition i, at least one particle selected from an aluminum nitride particle, a particle comprising a silicon-containing oxide film (b) and an aluminum nitride particle, a particle comprising an organosilicone compound film (c) and an aluminum nitride particle, and a particle comprising a silicon-containing oxide film (b), an organosilicone compound film (c), and an aluminum nitride particle.
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