Grand prosperous electron on November 14 announcement, zhuhai of company wholy-owned subsidiary limited company of data of grand prosperous electron, the letter of two inventions patent that issues at receiving bureau of national intellectual property recently, the name is acyl of double Ma Lai respectively inferior amine - gel of colophony of ester of a kind of 3 Qin colophony and its preparation method and application, cyanic acid and its preparation method and application. Invention patent offers acyl of a kind of double Ma Lai inferior amine - 3 Qin colophony and its preparation method and application, involve colophony technology field. The acyl of double Ma Lai of this invention inferior amine - 3 Qin colophony can be used at preparation integrated circuit to enclose support plate. The invention is patent 2 provide method of gel of colophony of ester of a kind of cyanic acid and its preparation and application, involve field of technology of colophony of cyanic acid ester. The applicable of gel of colophony of ester of a kind of cyanic acid of this invention Yugaoduo layer circuit board expects make, conduce to improve heat-resisting function and mechanical performance.