发明名称 |
BINDER BASED ON POLYURETHANE FOR PRODUCING CORES AND MOULDS USING ISOCYANATES CONTAINING A URETHONIMINE AND/OR CARBODIIMIDE GROUP, A MOULD MATERIAL MIXTURE CONTAINING SAID BINDER, AND A METHOD FOR USING SAID BINDER |
摘要 |
Binder for molding mixtures, comprises (A) one or more polyol compounds having at least 2 hydroxy groups per molecule containing at least one phenolic resin as a polyol compound and (B) one or more isocyanate compounds having at least 2 isocyanate groups per molecule containing at least one isocyanate compound having at least 2 isocyanate groups per molecule further comprising at least one urethonimine group and/or carbodiimide group per molecule. Independent claims are included for: (1) a molding mixture comprising the binder and refractory molding materials; and (2) producing a shaped body as mold part or as a core comprising (i) mixing the refractory molding materials with the binder (0.2-5 (preferably 0.4-3) wt.%) to obtain a molding material mixture, introducing the molding material mixture or its components into a mold, curing the molding material mixture in the mold to obtain a self-supporting form, and separating the cured molding from the mold and optionally further curing to obtain a cured molded article. |
申请公布号 |
EP2640764(B1) |
申请公布日期 |
2015.03.25 |
申请号 |
EP20110855250 |
申请日期 |
2011.11.17 |
申请人 |
ASK CHEMICALS GMBH |
发明人 |
CORNELISSEN, CARSTEN;KOCH, DIETHER;PRIEBE, CHRISTIAN |
分类号 |
C08K3/36;B22C1/22;C08G8/28;C08G18/18;C08G18/54;C08G18/79 |
主分类号 |
C08K3/36 |
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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