申请人:Construction Research & Technology GmbH
公开号:EP2853550A1
公开(公告)日:2015-04-01
The present invention relates to cationic copolymers, a process for the production of these cationic copolymers and the use of these cationic copolymers as dispersants for geopolymer binder systems.
The present invention is based on the finding that these cationic copolymers where the cationic charge is due to the presence of certain cyclic and/or polycationic groups are stable towards Hoffmann elimination that would otherwise occur at very high pH values.
Moreover, the dispersing effect of cationic polymers can be further enhanced through the addition of polyvalent anions.
本发明涉及阳离子共聚物、生产这些阳离子共聚物的工艺以及将这些阳离子共聚物用作土工聚合物粘结剂体系的分散剂。
本发明基于以下发现:这些阳离子共聚物的阳离子电荷是由于某些环状和/或多阳离子基团的存在而产生的,它们对霍夫曼消解具有稳定性,否则在极高的 pH 值下就会发生霍夫曼消解。
此外,阳离子聚合物的分散效果还可以通过添加多价阴离子得到进一步增强。