Use of oxidized lignin as a dispersant

The present invention concerns a process for oxidizing lignin at alkaline conditions. This oxidized lignin can be used as a dispersant in various end-products, for example as a renewable plasticizer in cement-containing products, such as concrete, where the ability of the oxidized lignin to endure alkaline conditions is an advantage. Further, the invention concerns a concrete mixture containing aggregate, cement, water and a plasticizer formed of oxidized lignin, and a process for producing such a concrete mixture. The oxidized lignin can be manufactured using a process, where the lignin starting material is reacted with an oxidizing agent in solution in alkaline conditions.Patent family as of 12.11.2021BR112016007318 A2 20170801 BR20161107318 20141002 CN105705475 A 20160622 CN201480054352 20141002 CN105705475 B 20181228 CN201480054352 20141002 EP3052451 A1 20160810 EP20140851342 20141002 EP3052451 A4 20170614 EP20140851342 20141002 FI126397 B 20161115 FI20130005986 20131002 FI20135986 A 20150403 FI20130005986 20131002 US2016244364 AA 20160825 US20140026618 20141002 US9676667 BB 20170613 US20140026618 20141002 WO15049424 A1 20150409 WO2014FI50754 20141002Link to current patent family on right