发明公开
- 专利标题： Foundry binder systems
- 专利标题（中）： 铸造粘合剂体系
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申请号： EP00202724.1申请日： 2000-07-31
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公开(公告)号： EP1074568A2公开(公告)日： 2001-02-07
- 发明人: Zennaro, Giorgio , Balconi, Massimo
- 申请人： Cavenaghi SPA
- 申请人地址： Via Varese 19 20020 Lainate (Milano) IT
- 专利权人： Cavenaghi SPA
- 当前专利权人： Cavenaghi SPA
- 当前专利权人地址： Via Varese 19 20020 Lainate (Milano) IT
- 代理机构： Dragotti, Gianfranco
- 优先权： ITMI991725 19990802
- 主分类号： C08G18/36
- IPC分类号： C08G18/36 ; C08G18/08 ; B22C1/22
摘要：
Described herein are polyurethane systems to be used as binders in admixture with sand, or similar granular substances, for the production of moulds or cores for foundry use; in more detail, the invention relates to the polyisocyanate-based component that can be used in such binder compositions. Said component has the following percentage composition:
(a) a polyisocyanate in an amount of 50-95% by weight;
(b) vegetable oil in an amount of 5-40% by weight;
(c) an aprotic organic polar solvent in an amount of 2.5-30% by weight.
(a) a polyisocyanate in an amount of 50-95% by weight;
(b) vegetable oil in an amount of 5-40% by weight;
(c) an aprotic organic polar solvent in an amount of 2.5-30% by weight.
公开/授权文献
- EP1074568B2 Foundry binder systems 公开/授权日：2006-03-29
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