WATER-DISPERSIBLE AMPHOTERIC POLYURETHANE, PREPARATION METHOD THEREFOR, AND USE THEREOF IN REINFORCING CONCRETE
申请人:Jiangsu Sobute New Materials Co., Ltd.
公开号:EP2730595A1
公开(公告)日:2014-05-14
The present invention relates to a water-dispersible amphoteric polyurethane and a preparation method for it. The water-dispersible amphoteric polyurethane is prepared from polyisocyanate compound, polyol compound, diol compound containing an anionic group or a potential anionic group, tertiary or quaternary amine cationic group compound containing at least two active H functional groups and polyamine compound containing polyoxyethylene. During preparation, the diol compound and tertiary or low-molecular quaternary amine cationic group compound shall be controlled for the dosing order, and then neutralized and chain-extended to finally get the target product. The present invention further relates to the application of the water-dispersible amphoteric polyurethane in reinforced concrete, wherein the dosing amount is 0.1 - 5% of the total mass of the concrete.
本发明涉及一种水分散两性聚氨酯及其制备方法。该水分散两性聚氨酯由多异氰酸酯化合物、多元醇化合物、含有阴离子基团或潜在阴离子基团的二元醇化合物、含有至少两个活性 H 官能团的叔胺或季胺阳离子基团化合物和含有聚氧乙烯的多胺化合物制备而成。在制备过程中,应控制二元醇化合物和叔胺或低分子季胺阳离子基团化合物的配料顺序,然后进行中和、扩链,最终得到目标产品。本发明进一步涉及水分散两性聚氨酯在钢筋混凝土中的应用,其中掺量为混凝土总质量的 0.1 - 5%。