Patent ID: 11961636
Assignee: NISSAN CHEMICAL CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 6:
7. The method for producing the insulating composition according to claim 4, wherein the aqueous sol of the silica particles (A) is produced through: a step of preparing an aqueous dispersion of silica particles (a) by heating a silicate liquid obtained by cation exchange of an aqueous alkali silicate solution, and a step of adding, to the aqueous dispersion of the silica particles (a), a silane compound of the following Formula (1):

RaSiX(4-a)  Formula (1)

to coat the surfaces of the silica particles (a) with a hydrolysis product or hydrolysis condensate of the silane compound of Formula (1); wherein R is a C11 alkyl group, an epoxy group, an epoxy group-containing organic group, a phenyl group, a phenyl group-containing organic group, or any combination of these, and is bonded to the silicon atom via a Si—C bond; a is an integer of 0 to 3; and X is an alkoxy group, an acyloxy group, or a halogen group.