公开(公告)号：US20240026062A1

公开(公告)日：2024-01-25

申请号：US18044673

申请日：2021-08-17

申请人： Dow Global Technologies LLC

发明人： Kristeen Esther Joseph ,  Sung-Yu Ku ,  Heather M. Wiles

IPC分类号： C08G18/65 ,  C08G18/12 ,  C08L75/04 ,  C08G18/24 ,  C08G18/08

CPC分类号： C08G18/6541 ,  C08G18/12 ,  C08L75/04 ,  C08G18/244 ,  C08G18/0852 ,  C08G18/0866 ,  C08L2201/54

摘要： A prepolymer comprising acid functionality is made by a process comprising the step of contacting: (i) a di-isocyanate, (ii) a diol containing an acid group, and (iii) a polyol without an acid group, the contacting conducted under reaction conditions and in a solvent consisting essentially of dipropylene glycol dimethyl ether. The prepolymer is useful in the preparation of water-based polyurethane dispersions.