公开(公告)号：US11591432B2

公开(公告)日：2023-02-28

申请号：US16305502

申请日：2017-05-24

Applicant: BASF SE

Inventor： Zhong Zeng ,  Harm Wiese ,  Rui Deng

IPC: C09D151/08 ,  C08F283/12 ,  C08F285/00 ,  C08F2/22 ,  C08F220/10

Abstract: The present invention relates to an aqueous polymer dispersion containing a multistage emulsion polymer particle. The multistage emulsion polymer particle contains a polysiloxane formed in the first stage; a transition layer formed in the second stage; and a polyacrylate formed in the third stage. The transition layer is made of silane coupling agents. The present invention also relates to a method of preparing the aqueous polymer dispersion and use of the aqueous polymer dispersion for preparing coatings.