Production of articles of bonded particulate material and binder compostions for use therein
摘要
<p>A binder composition for producing articles of bonded particulate material such as foundry moulds or cores 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.</p>
申请公布号
GR3030299(T3)
申请公布日期
1999.09.30
申请号
GR19990401385T
申请日期
1999.05.21
申请人
FOSECO INTERNATIONAL LIMITED
发明人
BARKER, SIDNEY ALAN;BAGGETT, NEIL;STEVENSON, JOHN;GEORGE, RAYMOND DOUGLAS;DE COURCY, DAVID ROBERT;HAMMOND, TIMOTHY;BRADLEY, MARTIN