公开(公告)号：US4985489A

公开(公告)日：1991-01-15

申请号：US409724

申请日：1989-09-29

申请人： Sidney A. Barker ,  Neil Baggett ,  John Stevenson ,  Raymond D. George ,  David R. De Courcy ,  Timothy Hammond ,  Martin Bradley

发明人： Sidney A. Barker ,  Neil Baggett ,  John Stevenson ,  Raymond D. George ,  David R. De Courcy ,  Timothy Hammond ,  Martin Bradley

IPC分类号： C08J5/00 ,  B22C1/22 ,  C04B35/632 ,  C08G8/28 ,  C08G16/02 ,  C08K3/24 ,  C08K3/38 ,  C08K5/54 ,  C08L61/06 ,  C08K5/56

CPC分类号： C08K3/38 ,  B22C1/2253 ,  C08G16/0218 ,  C08G8/28 ,  C08K3/24 ,  C08K5/54

摘要： 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.

公开(公告)号：US4977209A

公开(公告)日：1990-12-11

申请号：US280313

申请日：1988-12-06

申请人： Sidney A. Barker ,  Neil Baggett ,  John Stevenson ,  Raymond D. George ,  David R. De Courcy ,  Timothy Hammond ,  Martin Bradley

发明人： Sidney A. Barker ,  Neil Baggett ,  John Stevenson ,  Raymond D. George ,  David R. De Courcy ,  Timothy Hammond ,  Martin Bradley

IPC分类号： C08J5/00 ,  B22C1/22 ,  C04B35/632 ,  C08G8/28 ,  C08G16/02 ,  C08K3/24 ,  C08K3/38 ,  C08K5/54 ,  C08L61/06

CPC分类号： C08K3/38 ,  B22C1/2253 ,  C08G16/0218 ,  C08G8/28 ,  C08K3/24 ,  C08K5/54

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(公告)号：US4194918A

公开(公告)日：1980-03-25

申请号：US850643

申请日：1977-11-11

申请人： Raymond D. George ,  John Stevenson

发明人： Raymond D. George ,  John Stevenson

IPC分类号： B22C1/02 ,  B22C1/10 ,  B22C1/16 ,  B22C1/18 ,  C04B28/26 ,  C09J103/00 ,  C08L3/02

CPC分类号： C04B28/26 ,  B22C1/188 ,  C09J103/00

摘要： The invention relates to alkali metal silicate binder compositions, particularly for use in the production of foundry moulds and cores.The binders of the invention are in aqueous solution and are obtained by mixing:(i) an alkali metal silicate,(ii) a substantially water soluble carbohydrate selected from glycans; glycan oligosaccharides; glycanitols; glycanitol derivatives of oligosaccharides; and monosaccharides and disaccharides and derivatives thereof, and(iii) an oxyanion of boron, tin, germanium, tellurium or arsenic, which can form with the carbohydrate a water soluble complex.The binders of the invention give better breakdown properties and improved surface finish of metal castings produced using moulds and cores formed using the binders.

摘要翻译： 本发明涉及碱金属硅酸盐粘合剂组合物，特别是用于生产铸造模具和芯体。 本发明的粘合剂在水溶液中，并通过混合：（i）碱金属硅酸盐，（ii）基本上水溶性的选自聚糖的碳水化合物; 聚糖寡糖; 聚糖醇 寡糖的甘露糖醇衍生物; 和单糖和二糖及其衍生物，和（iii）可与碳水化合物形成水溶性络合物的硼，锡，锗，碲或砷的氧阴离子。 本发明的粘合剂给出了使用使用粘合剂形成的模具和芯体制备的金属铸件的更好的击穿性能和改进的表面光洁度。

公开(公告)号：US4329177A

公开(公告)日：1982-05-11

申请号：US205957

申请日：1980-10-27

申请人： Raymond D. George

发明人： Raymond D. George

IPC分类号： B22C1/16 ,  B22C1/20 ,  B22C1/26 ,  C04B28/26 ,  B28B7/34 ,  C08L3/02

CPC分类号： C04B28/26 ,  B22C1/167 ,  B22C1/20 ,  B22C1/26

摘要： A binder composition in aqueous solution, suitable for use in the production of foundry sand moulds and cores is obtained by mixing(i) an alkali metal silicate(ii) a substantially water soluble carbohydrate selected from monosaccharides, disaccharides, polysaccharides and derivatives thereof and(iii) urea.The composition may also contain an oxyanion such as a borate which is capable of forming a water soluble complex with the carbohydrate. The preferred carbohydrate is a stabilized starch hydrolysate whose reducing power has been removed by a process such as hydrogenation.Moulds and cores bonded using the composition may be hardened by injection of carbon dioxide gas, or a chemical hardening agent for the alkali metal silicate may be added to the sand.

摘要翻译： PCT No.PCT / GB80 / 00026 Sec。 日期：1980年10月27日 102e日期：1980年8月13日PCT申请日：1980年2月19日 WO80 / 01767出版物 日本：1980年9月4日。适用于生产铸造砂模和芯的水溶液中的粘合剂组合物通过混合（i）碱金属硅酸盐（ii）基本上水溶性的碳水化合物，其选自单糖， 二糖，多糖及其衍生物和（iii）尿素。 组合物还可以含有能够与碳水化合物形成水溶性络合物的氧阴离子例如硼酸盐。 优选的碳水化合物是其还原能已通过诸如氢化的方法除去的稳定的淀粉水解产物。 使用组合物粘合的模具和芯可以通过注入二氧化碳气体来硬化，或者可以将用于碱金属硅酸盐的化学硬化剂加入砂中。