公开(公告)号：US20210163653A1

公开(公告)日：2021-06-03

申请号：US17267906

申请日：2019-08-27

Applicant: INEOS STYROLUTION GROUP GMBH

Inventor： Tobias SCHULZ ,  Wolfgang FISCHER ,  Ulrich JANSEN ,  Gisbert MICHELS

IPC: C08F285/00 ,  C08F6/00 ,  C08L51/00 ,  C08L55/02 ,  C08F212/08 ,  C08F220/44 ,  C08F2/22

Abstract: The present invention is directed to a process for the production of graft copolymer compositions which are based on acrylonitrile-styrene-acrylate (ASA) or acrylonitrile- butadiene-styrene (ABS) graft copolymers. The graft copolymers compositions are obtained by emulsion polymerization and afterwards precipitation, dewatering, drying and optionally cooling of the dried graft copolymer powder, wherein the graft copolymer B powder obtained is mixed with an aeration gas, preferably air and/or nitrogen, wherein the bulk density of the graft copolymer B powder is equal or less than 98.5% of the bulk density of the non-aerated graft copolymer B, during the whole aeration step. The graft copolymer powders show higher powder flowability and less tendency of caking during storage, for example in a silo.

公开(公告)号：US20200377714A1

公开(公告)日：2020-12-03

申请号：US16607213

申请日：2018-04-23

Applicant: INEOS STYROLUTION GROUP GMBH

Inventor： Gisbert MICHELS ,  Ulrich JANSEN ,  Stefan KAMINSKY ,  Nils WITTENBERG ,  Fabian RUETER

IPC: C08L51/04 ,  C08F279/04 ,  C08C1/12

Abstract: The invention relates to a process for producing graft copolymers based on acrylonitrile-butadiene-styrene copolymers (ABS), wherein the graft copolymers may be dewatered particularly readily after production and precipitation and have a low residual moisture content after centrifugation. The invention further relates to a process for producing thermoplastic molding materials using the thus obtained ABS graft copolymers.

公开(公告)号：US20190135990A1

公开(公告)日：2019-05-09

申请号：US16307339

申请日：2017-06-06

Applicant: INEOS STYROLUTION GROUP GMBH

Inventor： Gisbert MICHELS ,  Ulrich JANSEN ,  Frank EISENTRAEGER ,  Stefan KAMINSKY

IPC: C08J3/215 ,  C08K5/00 ,  C08K5/13 ,  C08K5/372 ,  C08L55/02 ,  C08L83/04 ,  C08F279/04

Abstract: The invention relates to a process for producing a stabilizer dispersion S, wherein the stabilizer dispersion is an aqueous composition comprising at least one phenolic stabilizer A, at least one thio co-stabilizer B, at least one surfactant C and at least one silicon oil component D. Further the present invention is directed to a process for producing a thermoplastic moulding composition, in particular an composition based on acrylonitrile butadiene styrene copolymers (ABS), using the stabilizer dispersion S.

公开(公告)号：US20190264021A1

公开(公告)日：2019-08-29

申请号：US16334936

申请日：2017-09-25

Applicant: INEOS STYROLUTION GROUP GMBH

Inventor： Wolfgang FISCHER ,  Ulrich JANSEN ,  Tobias SCHULZ

IPC: C08L51/00 ,  C08L25/12 ,  C08L25/16

Abstract: The invention relates to a process for producing thermoplastic molding materials based on acrylonitrile-styrene-acrylate copolymers (ASA) having improved surface properties, in particular an improved stability of surface quality during storage in a hot and humid environment and a reduced content of residual monomers. The invention further relates to the use of a fluidized bed dryer and/or a flow dryer in the production of thermoplastic ASA molding materials for improving surface quality and the use of a fluidized bed dryer and/or a flow dryer in the production of thermoplastic ASA molding materials for reducing the content of residual monomers. The invention further provides ASA molding materials producible by means of the process according to the invention and also moldings.