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    • 10. 发明申请
    • USE OF BRANCHED ALKANE DIOL CARBOXYLIC ACID DIESTERS IN POLYURETHANE-BASED FOUNDRY BINDERS
    • 支链烷基二元羧酸二元酸在聚氨酯基料中的应用
    • WO2009095251A8
    • 2010-09-16
    • PCT/EP2009000613
    • 2009-01-30
    • ASHLAND SUEDCHEMIE KERNFESTPRIEBE CHRISTIANKOCH DIETHER
    • PRIEBE CHRISTIANKOCH DIETHER
    • B22C1/22
    • B22C1/2273
    • The invention relates to a molding material mixture for production of molded products for the foundry industry, comprising at least one fire-resistant base molding material and a polyurethane-based binder system comprising a polyisocyanate component and a polyol component. According to the invention, the polyurethane-based binder system comprises a portion of a carboxylic acid diester of a branched alkane diol, said portion being at least 3 weight-%, and a portion of aromatic solvent of less than 10 weight-% of the binder system. A preferable carboxylic acid diester is 2,2,4-trimethyl-1,3-pentandiol-diisobutyrate. The molded products produced from the molding material mixture for the foundry industry are characterized by a high strength and a lower generation of fumes and smoke during pouring.
    • 本发明涉及一种用于制造铸造工业用模制品的模制材料混合物,其至少包括耐火模制材料和包含多异氰酸酯组分和多元醇组分的聚氨酯基粘合剂体系。 根据本发明,基于粘合剂体系,聚氨酯基粘合剂体系包含至少3重量%的支链烷二醇的羧酸二酯和小于10重量%的芳族溶剂。 优选使用2,2,4-三甲基-1,3-戊二醇二异丁酸酯作为羧酸二酯。 用于铸造工业的由模制材料混合物生产的模制件的特征在于强度高并且在铸造期间减少烟雾和烟雾。