公开(公告)号：US12252560B2

公开(公告)日：2025-03-18

申请号：US17603211

申请日：2020-04-14

Applicant: SPECIALTY OPERATIONS FRANCE

Inventor： Lichang Zhou ,  DongCheel Lee ,  Tiffany Chen ,  Fabio Trezzi ,  Shailesh Majmudar ,  Homayoun Jamasbi ,  An Tran ,  Pierre-Emmanuel Dufils ,  Laurianne Timbart ,  David James Wilson ,  Changheon Kang

IPC: C08F218/08 ,  C08F2/22 ,  C08F2/38 ,  C08F212/08 ,  C08F220/14 ,  C08F220/18 ,  C09D5/02 ,  C09D133/12

Abstract: Processes to prepare aqueous polymer dispersions are provided, as well as compositions thereof, which have high solids content (e.g., 50%) with low viscosity. The process uses a selective hydrophilic macro-RAFT agent of formula (I), and is substantially free of surfactants. This process can be used to make latex polymers with good stability, which can be used widely in coatings (e.g., architectural paints, stone paints, industrial coatings, wood coatings, etc.), adhesives, sealants and mastic compositions.