公开(公告)号：US11560456B2

公开(公告)日：2023-01-24

申请号：US16470270

申请日：2017-12-15

Applicant: BASF SE

Inventor： Monica Haag ,  Stephan Deuerlein ,  Roland Krauss ,  Volker Klock ,  Holger Barthel

IPC: C08J3/075 ,  B29C48/68 ,  B29C48/00 ,  B29C48/395 ,  B29C48/53 ,  B29C48/625 ,  B29C48/685 ,  B29B7/42 ,  B29B7/82 ,  B29C48/05 ,  B29C48/345 ,  B29C48/535 ,  B29C48/04 ,  C08J3/24

Abstract: A single-screw extruder for changing a morphology of superabsorbent polymer gel. The single-screw extruder has an input aperture, a channel, a screw and an output aperture. The screw in the invention has a first pitch value of a pitch of the screw flights along the conveying zone of the channel and, following in conveying direction, has a second pitch value of the pitch of the screw flights along the conveying zone of the channel, where the second pitch value is smaller than the first pitch value.

公开(公告)号：US20190330426A1

公开(公告)日：2019-10-31

申请号：US16470270

申请日：2017-12-15

Applicant: BASF SE

Inventor： Monica Haag ,  Stephan Deuerlein ,  Roland Krauss ,  Volker Klock ,  Holger Barthel

IPC: C08J3/075 ,  B29B7/42 ,  B29B7/82 ,  B29C48/00 ,  B29C48/04 ,  B29C48/395 ,  B29C48/53 ,  B29C48/625 ,  B29C48/68 ,  B29C48/685 ,  B29C48/345 ,  B29C48/535

Abstract: A single-screw extruder for changing a morphology of superabsorbent polymer gel. The single-screw extruder has an input aperture, a channel, a screw and an output aperture. The screw in the invention has a first pitch value of a pitch of the screw flights along the conveying zone of the channel and, following in conveying direction, has a second pitch value of the pitch of the screw flights along the conveying zone of the channel, where the second pitch value is smaller than the first pitch value.

公开(公告)号：US11458665B2

公开(公告)日：2022-10-04

申请号：US16470590

申请日：2017-12-15

Applicant: BASF SE

Inventor： Monica Haag ,  Stephan Deuerlein ,  Holger Barthel ,  Volker Klock ,  Roland Krauss

IPC: B29C48/00 ,  B29C48/63 ,  B29C48/68 ,  B29C48/395 ,  B29C48/535 ,  B29C48/625 ,  B29C48/685 ,  B29B7/42 ,  C08J3/075 ,  C08L101/14 ,  B29K105/00

Abstract: A single-screw extruder for changing a morphology of a superabsorbent polymer, specifically a polymer gel. The single-screw extruder has an input aperture, a channel, a screw and an output aperture. The screw has a pitch value of a pitch of the screw flights along the conveying zone of the channel, where the channel has a mixing-element arrangement with at least one mixing element which protrudes into the channel of the single-screw extruder and which is configured for the mixing of the SAP polymer gel.

公开(公告)号：US20190308358A1

公开(公告)日：2019-10-10

申请号：US16470590

申请日：2017-12-15

Applicant: BASF SE

Inventor： Monica Haag ,  Stephan Deuerlein ,  Holger Barthel ,  Volker Klock ,  Roland Krauss

IPC: B29C48/00 ,  B29B7/42 ,  B29C48/395 ,  B29C48/535 ,  B29C48/625 ,  B29C48/63 ,  B29C48/685 ,  C08J3/075 ,  C08L101/14 ,  B29C48/68

Abstract: A single-screw extruder for changing a morphology of a superabsorbent polymer, specifically a polymer gel. The single-screw extruder has an input aperture, a channel, a screw and an output aperture. The screw has a pitch value of a pitch of the screw flights along the conveying zone of the channel, where the channel has a mixing-element arrangement with at least one mixing element which protrudes into the channel of the single-screw extruder and which is configured for the mixing of the SAP polymer gel.

公开(公告)号：US20130260032A1

公开(公告)日：2013-10-03

申请号：US13848879

申请日：2013-03-22

Applicant: BASF SE

Inventor： Holger Barthel ,  Gerald Gruenewald ,  Norbert Herfert ,  Markus Muehl ,  Birgit Reinhard

IPC: B01J20/32

CPC classification number: B01J20/3225 ,  B01J20/267 ,  B01J20/3078 ,  B01J2220/68 ,  C08J3/243 ,  C08J3/245 ,  C08J2333/02

Abstract: A process for thermal surface postcrosslinking of water-absorbing polymer particles, wherein the polymer particles are coated with an aqueous solution, the coated polymer particles are deagglomerated and the deagglomerated polymer particles are thermally surface postcrosslinked by means of a drum heat exchanger with an inverse screw helix.

Abstract translation: 一种用于吸水聚合物颗粒的热表面后交联的方法，其中聚合物颗粒用水溶液涂覆，涂覆的聚合物颗粒被解聚并且解聚聚合物颗粒通过具有反螺杆的滚筒式热交换器进行热表面后交联 螺旋。