发明名称 |
KERNSANDMATERIAL INNEFATTANDE SYRAKATALYSERAT HARTSBINDEMEDEL, SAMT MEDEL OCH FORFARANDE FOR DESS FRAMSTELLNING |
摘要 |
A catalyst material particularly useful in making core sand from which resin bound sand shapes are made. The preferred catalyst is a material comprising at least one salt made from a weak base and an acid from the group comprising lower aliphatic and aromatic sulfonic acids. The curable resin binder is preferably a furfuryl alcohol polymer or other furan-based material. The resin is preferably present in an amount of about 0.5% to about 5% based on the weight of sand, while the catalyst is present in an amount of about 5% to 40% by weight of the resin material. The catalyzed composition provides an excellent combination of working or bench life, rapid curing on a delayed action basis and favorable shape-imparting and holding properties in the formed sand shapes. Specifically preferred compositions include aluminum and copper phenol and toluene sulfonic acid salts. |
申请公布号 |
SE450347(B) |
申请公布日期 |
1987.06.22 |
申请号 |
SE19810001230 |
申请日期 |
1981.02.25 |
申请人 |
QO CHEMICALS INC |
发明人 |
J E * MENTING |
分类号 |
C08K5/42;B22C1/22;C08F4/00;C08L59/00;C08L61/00;C08L61/04;C08L71/00;C08L71/02;(IPC1-7):B22C1/22;C08L71/06 |
主分类号 |
C08K5/42 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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