公开(公告)号：CA3010572A1

公开(公告)日：2017-08-17

申请号：CA3010572

申请日：2017-02-02

Applicant: BASF SE

Inventor： BURAKOWSKA-MEISE EWELINA ,  WITTELER HELMUT ,  BAUER VOLKER ,  HUEFFER STEPHAN ,  SPANGENBERG OLIVER ,  FISCHER STEFAN ,  NIELSEN JESPER DUUS ,  JENEWEIN STEFAN ,  GARCIA MARCOS ALEJANDRA ,  CETINKAYA MURAT

IPC: B01J13/14 ,  A01N25/28

Abstract: The present invention relates to microcapsules comprising at least one polyethervinyl ester graftpolymer,at least one acrylic polymer,and water in the range of from 0.1 % of weight to 0% of weight of the total polymer as well as to processes preparing the same.

公开(公告)号：CA3012160A1

公开(公告)日：2017-08-17

申请号：CA3012160

申请日：2017-02-02

Applicant: BASF SE

Inventor： BURAKOWSKA-MEISE EWELINA ,  WITTELER HELMUT ,  BAUER VOLKER ,  JENEWEIN STEFAN ,  HUEFFER STEPHAN ,  SPANGENBERG OLIVER ,  FISCHER STEFAN ,  NIELSEN JESPER DUUS ,  CETINKAYA MURAT

IPC: B01J13/14

Abstract: Process for the preparation of microcapsules comprising the steps (a) preparation of an aqueous biphasic system by mixing (i) component (a1 ) comprising a component A selected from the group of polymers consisting of 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, and (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).