公开(公告)号：US20180371224A1

公开(公告)日：2018-12-27

申请号：US16060515

申请日：2016-11-28

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Peter Degenhart ,  Ana Luisa Vaz ,  Martin Antonius van Es ,  Mark Berix

IPC: C08L23/26 ,  B29C47/66 ,  B29C47/64 ,  B29C47/36 ,  B29C47/88 ,  C08K5/14

Abstract: Disclosed is a process for preparation of a propylene-based polymer composition involving the steps of: (a) mixing a propylene-based polymer and a peroxydicarbonate in a mixing device, wherein the mixing takes place at a temperature of ≤30° C., wherein the peroxydicarbonate is introduced into the mixing process in a dry form; (b) keeping the mixed composition at a temperature of ≤30° C.; (c) feeding the mixed composition into a melt extruder; (d) homogenizing the mixed composition at a temperature where the propylene-based polymer is in solid state during an average residence time of ≥6.0 and ≤30.0 seconds; (e) further homogenizing the mixed composition at a temperature at which the propylene-based polymer is in the molten state; and (f) extruding the homogenized material from a die outlet of the melt extruder followed by cooling and solidification; wherein the steps (a) through (f) are conducted in that order.

公开(公告)号：US10829572B2

公开(公告)日：2020-11-10

申请号：US16461444

申请日：2017-11-23

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Franciscus Petrus Hermanus Schreurs ,  Jan Nicolaas Eddy Duchateau ,  Ana Luisa Vaz ,  Maria Soliman ,  Priya Garg

IPC: C08F10/02

Abstract: The present invention relates to a use or process for the reduction of gels in polyethylene materials comprising at least one ethylene copolymer with a density ≥850 kg/m3 and

公开(公告)号：US11485846B2

公开(公告)日：2022-11-01

申请号：US16060515

申请日：2016-11-28

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Peter Degenhart ,  Ana Luisa Vaz ,  Martin Antonius van Es ,  Mark Berix

IPC: C08L23/26 ,  B29C48/67 ,  B29C48/36 ,  B29C48/68 ,  B29C48/88 ,  C08K5/14 ,  C08J3/24 ,  C08J9/14 ,  C08J9/00 ,  C08F110/06 ,  B29K23/00

Abstract: Disclosed is a process for preparation of a propylene-based polymer composition involving the steps of: (a) mixing a propylene-based polymer and a peroxydicarbonate in a mixing device, wherein the mixing takes place at a temperature of ≤30° C., wherein the peroxydicarbonate is introduced into the mixing process in a dry form; (b) keeping the mixed composition at a temperature of ≤30° C.; (c) feeding the mixed composition into a melt extruder; (d) homogenizing the mixed composition at a temperature where the propylene-based polymer is in solid state during an average residence time of ≥6.0 and ≤30.0 seconds; (e) further homogenizing the mixed composition at a temperature at which the propylene-based polymer is in the molten state; and (f) extruding the homogenized material from a die outlet of the melt extruder followed by cooling and solidification; wherein the steps (a) through (f) are conducted in that order.