公开(公告)号：US10899666B2

公开(公告)日：2021-01-26

申请号：US15773593

申请日：2016-11-18

Applicant: Rohm and Haas Company

Inventor： William C. Finch ,  Mike McGinnis ,  Sudhir M. Mulik ,  Charles J. Rand

IPC: C04B24/24 ,  C04B24/26 ,  C08F120/06 ,  C08F2/38 ,  C08F2/02 ,  C08G81/02 ,  C04B103/32

Abstract: 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 100 C. 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.

公开(公告)号：US20190152851A1

公开(公告)日：2019-05-23

申请号：US15773593

申请日：2016-11-18

Applicant: Rohm and Haas Company

Inventor： William C. Finch ,  Mike McGinnis ,  Sudhir M. Mulik ,  Charles J. Rand

IPC: C04B24/24 ,  C04B24/26 ,  C08F120/06

Abstract: 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 100 C 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.