公开(公告)号：US20210187466A1

公开(公告)日：2021-06-24

申请号：US16076123

申请日：2017-02-02

Applicant: BASF SE

Inventor： Ewelina Burakowska-Meise ,  Helmut Witteler ,  Volker Bauer ,  Stefen Jemewein ,  Stephan Heuffer ,  Oliver Spangenberg ,  Stefan Fischer ,  Jesper Duus Nielsen ,  Murat Cetinkaya

IPC: B01J13/14 ,  B01J13/22

Abstract: A process for the preparation of microcapsules including (a) preparation of an aqueous biphasic system by mixing (i) component (a1) including a component A selected from polyethylene glycol vinyl acetate comb polymers, polycarboxylates, polyethers, polyaspartates, polyvinylpyrrolidone, polyamines, and polylysine; wherein component (a1) is a monophasic system at 23° C., and forms a monophasic system at 23° C. if mixed with water in the range of from 1:99 to 99:1 by weight, and (ii) component (a2) containing water and a water-soluble component B, wherein water-soluble component B is different from component A, and wherein (a2) is a monophasic system at 23° C., (iii) at least one monomer (a3), and (iv) optionally at least one initiator (a4), wherein (a1), (a2), (a3), and (a4) can be mixed together in any order or simultaneously, followed by (b) optionally shearing of the biphasic system to form an emulsion, and (c) polymerization of monomer (a3).