发明授权
US4977209A Production of articles of bonded particulate material and binder
compositions for use therein from phenol-formaldehyde and oxyanion
失效
生产由苯酚 - 甲醛和氧阴离子使用的粘合颗粒材料和粘合剂组合物的制品
- 专利标题： Production of articles of bonded particulate material and binder compositions for use therein from phenol-formaldehyde and oxyanion
- 专利标题（中）： 生产由苯酚 - 甲醛和氧阴离子使用的粘合颗粒材料和粘合剂组合物的制品
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申请号： US280313申请日： 1988-12-06
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公开(公告)号： US4977209A公开(公告)日： 1990-12-11
- 发明人: Sidney A. Barker , Neil Baggett , John Stevenson , Raymond D. George , David R. De Courcy , Timothy Hammond , Martin Bradley
- 申请人： Sidney A. Barker , Neil Baggett , John Stevenson , Raymond D. George , David R. De Courcy , Timothy Hammond , Martin Bradley
- 申请人地址： GB2 Birmingham
- 专利权人： Foseco International Limited
- 当前专利权人： Foseco International Limited
- 当前专利权人地址： GB2 Birmingham
- 优先权： GBX8730159 19871224; GBX8816106 19880706
- 主分类号： C08J5/00
- IPC分类号： C08J5/00 ; B22C1/22 ; C04B35/632 ; C08G8/28 ; C08G16/02 ; C08K3/24 ; C08K3/38 ; C08K5/54 ; C08L61/06
摘要：
A binder composition for producing articles of bonded particulate material such as foundry moulds or cones comprises an alkaline aqueous solution of a resol phenol-aldehyde resin and an oxyanion capable of forming a stable complex with the resin the amount of alkali present in the solution being sufficient to substantially prevent stable complex formation. Bonded articles are produced from mixtures of particulate material and the binder composition by passing carbon dioxide gas through the formed articles whereby the oxyanion forms a stable complex with the resin and the resin is cured. The oxyanion may be for example borate, stannate or aluminate.
公开/授权文献
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