AOU, Kaoru,KALANTAR, Thomas H.,MENG, Qinghao,KLIER, John,VAN DYK, Antony K.,DOMBROWSKI, Gary W.,JACOBS, Joseph
申请号：
EP20160732101
公开号：
EP3310831(A1)
申请日:
2016.06.09
申请国别(地区):
欧洲专利局
年份:
2018
代理人:
摘要：
A reaction system for forming a viscoelastic polyurethane foam includes an isocyanate component and an isocyanate-reactive component that includes at least a polyol component, an additive component, and a preformed aqueous polymer dispersant. The mixture includes 50.0 wt% to 99.8 wt% of the polyol component, 0.1 wt% to 49.9 wt% of the additive component, and 0.1 wt% to 6.0 wt% of the preformed aqueous polymer dispersant. The aqueous polymer dispersant has a pH from 6.0 to 12.0 and includes from 5 wt% to 60 wt% of a polymeric component and from 40 wt% to 95 wt% of a fluid medium. The polymeric component includes at least one base polymer derived from 20 wt% to 100 wt% of at least one hydrophilic acid monomer having at least one carbonyl group, phosphate group, phosphonate group, or sulfonyl group, and optionally derived from at least one hydrophobic terminally unsaturated hydrocarbon monomer.
