FINCH, William C.,MCGINNIS, Mike,MULIK, Sudhir M.,RAND, Charles J.
申请号：
EP20160810528
公开号：
EP3383817(A1)
申请日:
2016.11.18
申请国别(地区):
欧洲专利局
年份:
2018
代理人:
摘要：
The present invention provides efficient methods to form a high solids content polymeric polyacid or a comb polymer useful as a superplasticizer or dispersant which comprise heating to from 80 to 100C for a first time period, and then, sequentially, heating to a second temperature of from 150 to 250 °C for a second time period a wet reaction mixture having a solids content of from 80 to 99 wt.% and comprising from 15 to 60 wt.% of one or more ethylenically unsaturated acid or a salt thereof, from 37 to 76.99 wt.% of one or more polyether polyols, alkyl polyether polyols, polyether amines or alkyl polyether amines in the presence of (i) from 0.01 to 1 wt.%, of one or more water soluble radical initiators or redox pairs and (ii) from 2 to 22 wt.% of one or more phosphorus oxide containing compounds, all weights based on the total weight of the wet reaction mixture.
