Production of aromatic resin and thermosetting composition used therefor

Abstract

Abstract PURPOSE:To obtain an aromatic resin of excellent heat resistance industrially and inexpensively, by mixing an (alkyl)naphthalene with a crosslinking agent comprising an aromatic compound at a specified ratio and forming a thermosetting substance comprising an intermediate condensation product. CONSTITUTION:A staring material consisting mainly of naphthalene and/or an alkylnaphthalene is mixed with a crosslinking agent consisting mainly of an aromatic compound having at least two hydroxymethyl or halomethyl groups at a ratio represented by the formula. This mixture is heated to 70-300 deg.C in the presence of an acid catalyst to form a thermosetting substance comprising an intermediate condensation product. In the formula, W1 is the weight of the starting material, W2 is the weight of the crosslinking agent, (a) is the MW or average-MW of the starting material, (b) is the MW or average MW of the crosslinking agent and (n) is the number of the hydroxymethyl or halomethyl groups which are bonded with 1mol of the aromatic compound as the crosslinking agent.

Inventors

• 👤 Sugiro Otani
• 👤 大谷　杉郎
• 👤 Yoichiro Nagai
• 👤 永井　洋一郎

Bibliographic Details