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公开(公告)号:US4311619A
公开(公告)日:1982-01-19
申请号:US139304
申请日:1980-04-14
CPC分类号: C08G8/04 , B22C1/2253
摘要: A phenol-aldehyde resin useful in such applications as a cold-set binder for cores and molds used in the foundry industry and reactive prepolymers used in reaction injection molding compositions produced by the steps of reacting a phenol and aldehyde in a mole ratio of 1 to 1-2.3 in the presence of catalytic amounts of an organic compound of aluminum, zirconium or titanium.
摘要翻译: 可用于铸造工业中使用的用于芯和模具的冷定型粘合剂和反应性注射成型组合物中使用的反应性预聚物的酚醛树脂,其通过以下步骤制备:将酚和醛以摩尔比1与 1-2.3在催化量的铝,锆或钛的有机化合物的存在下进行。