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1. 发明授权

US4131582A Method for preparing stable aqueous emulsion of phenolic resin 失效
标题翻译：制备酚醛树脂稳定水性乳液的方法
公开(公告)号：US4131582A
公开(公告)日：1978-12-26
申请号：US809949
申请日：1977-06-24
申请人： Yuji Kako , Toyoji Kiguga , Tetsuo Sanuki
发明人： Yuji Kako , Toyoji Kiguga , Tetsuo Sanuki
IPC分类号： C08G8/38 , C08J3/03 , C08L61/10 , C08L61/06
CPC分类号： C08J3/03 , C08G8/38 , C08J2361/00
摘要： A method is disclosed for preparing a stable aqueous emulsion of a phenolic resin which is characterized by adding polyacrylamides and, if required, further adding dispersing agents to the phenolic resin during or after the completion of a reaction of components which comprise (A) between about five (5) and one hundred (100) parts by weight of one or more phenols, (B) between zero (0) and about ninety-five (95) parts by weight of aldehyde-reactive modifier, and (C) in excess of 0.4 mole of aldehydes based on the total amount of one (1) mole of (A) and (B) described above.Emulsions obtained by the present invention are useful as binders for inorganic materials and organic materials, as compounding ingredients for latex, as emulsion and water paints and so forth; and, furthermore, there are various uses such as grouting agent, reinforcing agent for synthetic rubber, self-hardening binder for foundry sands, raw material of phenolic resin foam, binder for abrasive cloth and paper, and the like.
摘要翻译：公开了一种用于制备酚醛树脂的稳定水性乳液的方法，其特征在于加入聚丙烯酰胺，并且如果需要，在组分反应完成期间或之后进一步向酚醛树脂中加入分散剂，所述成分包含（A）在约五（5）和一百（100）重量份的一种或多种酚，（B）在零（0）至约九十五（95）重量份醛反应性改性剂之间，和（C）过量的基于上述（A）和（B）的（1）摩尔的总量的0.4摩尔醛。

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