【摘要】 本文筛选腰果酚和甲醛缩聚反应的催化剂。论活性,盐酸第一,氢氧化钠次之,氯化铵第三。产物经150℃烘烤可得烘于清漆。若在产物中加入少量环烷酸钴可得室温自干清漆。更多还原

【Abstract】 Catalysts which catalyze the polycondensation reaction of cardanbl with formaldehyde were compared. Order of their comparative catalytic activities is 1. hydrochloric acid, 2. sodium hydroxide and 3.ammonium chloride. Baking varnish was gained by stoving the product at 150℃. Self-drying lacquer at room temperature could be obtained, if a little cobalt naphthenate was added into the Product.更多还原