Precatalyzed catalyst compositions, process for preparing epoxy resins, curable compositions, articles resulting from curing the resultant compositions
申请人:THE DOW CHEMICAL COMPANY
公开号:EP0441243A2
公开(公告)日:1991-08-14
The process of reacting an epoxy resin with a reactive hydrogen-containing compound or a carboxylic acid anhydride in the presence of a phosphonium catalyst is improved by employing a phosphonium compound having an amino substituent on the cation portion of the phosphonium compound as the catalyst. The invention also concerns precatalyzed epoxy resin compositions, curable compositions and cured compositions.
Adamantanealkanamines were prepared by a new method: the wittig reaction of aminophosphonium ylides with 2-adamantanone. Conductance measurements have been employed to examine and compare the aggregation behaviour of these compounds.