Coating composition and electronic component

Patent metadata

Field	Value
Publication number	US-10294145-B2
Application number	US-201815868412-A
Country	US
Kind code	B2
Filing date	Jan 11, 2018
Priority date	Jul 15, 2015
Publication date	May 21, 2019
Grant date	May 21, 2019

Abstract

A coating composition contains 5 parts by mass or more and 20 parts by mass or less (i.e., 5 to 20) of a first resin composition, 5 parts by mass or more and 20 parts by mass or less (i.e., 5 to 20) of a second resin composition, and 40 parts by mass or more and 65 parts by mass or less (i.e., 40 to 65) of an inorganic powder. The first resin composition is a poly(meth)acrylate with a glass transition temperature Tg of ≤−20° C., and the second resin composition is a compound having structures represented by general formulae (1) and (2), below, one or more structures for each. R 1 , in general formula (1), and R 2 , in general formula (2), are each independently a hydrogen atom or a methyl group. X, in general formula (2), is any substituent that is not a hydrogen atom.

First claim

What is claimed is:

1. A coating composition comprising:
from 5 parts by mass to 20 parts by mass of a first resin composition;
from 5 parts by mass to 20 parts by mass of a second resin composition; and
from 40 parts by mass to 65 parts by mass of an inorganic powder, wherein
the first resin composition is a poly(meth)acrylate with a glass transition temperature Tg of ≤−20° C.,
the second resin composition has at least one structure represented by following formula (1) and at least one structure represented by following formula (2),

R 1 and R 2 are each independently a hydrogen atom or a methyl group, and
X is a substituent other than a hydrogen atom.

2. The coating composition according to claim 1 , wherein X is either a structure having a benzene ring or an alkyl group having eight or more carbon atoms.

3. The coating composition according to claim 1 , wherein a weight-average molecular weight of the second resin composition is 50000 or less.

4. The coating composition according to claim 1 , further comprising a (meth)acrylate having from three to six ethylenically unsaturated groups in one molecule.

5. The coating composition according to claim 1 , further comprising a photopolymerization initiator.

6. The coating composition according to claim 1 , wherein the inorganic powder is composed of glass and filler, and a proportion that the filler accounts for in the inorganic powder is 60% by weight or less.

7. An electronic component comprising an insulating layer made of the coating composition according to claim 1 through firing.

8. The coating composition according to claim 2 , wherein a weight-average molecular weight of the second resin composition is 50000 or less.

9. The coating composition according to claim 2 , further comprising a (meth)acrylate having from three to six ethylenically unsaturated groups in one molecule.

10. The coating composition according to claim 3 , further comprising a (meth)acrylate having from three to six ethylenically unsaturated groups in one molecule.

11. The coating composition according to claim 2 , further comprising a photopolymerization initiator.

12. The coating composition according to claim 3 , further comprising a photopolymerization initiator.

13. The coating composition according to claim 4 , further comprising a photopolymerization initiator.

14. The coating composition according to claim 2 , wherein the inorganic powder is composed of glass and filler, and a proportion that the filler accounts for in the inorganic powder is 60% by weight or less.

15. The coating composition according to claim 3 , wherein the inorganic powder is composed of glass and filler, and a proportion that the filler accounts for in the inorganic powder is 60% by weight or less.

16. The coating composition according to claim 4 , wherein the inorganic powder is composed of glass and filler, and a proportion that the filler accounts for in the inorganic powder is 60% by weight or less.

17. The coating composition according to claim 5 , wherein the inorganic powder is composed of glass and filler, and a proportion that the filler accounts for in the inorganic powder is 60% by weight or less.

18. An electronic component comprising an insulating layer made of the coating composition according to claim 2 through firing.

19. An electronic component comprising an insulating layer made of the coating composition according to claim 3 through firing.

20. An electronic component comprising an insulating layer made of the coating composition according to claim 4 through firing.

Assignees

• Murata Manufacturing Co

Inventors

• Sakata Tomonori

Classifications

• H01B3/02

  mainly consisting of inorganic substances · CPC title

• C08K2003/2227

  of aluminium · CPC title

• C08K3/40

  Glass · CPC title

• C03C12/00

  Powdered glass (C03C8/02 takes precedence); Bead compositions · CPC title

• C03C8/16 Primary

  with vehicle or suspending agents, e.g. slip · CPC title