公开(公告)号：US11498986B2

公开(公告)日：2022-11-15

申请号：US16981659

申请日：2019-03-14

Applicant: BASF SE

Inventor： Martin Wendker ,  Ivette Garcia Castro ,  Jan Strittmatter ,  Karolin Geyer ,  Wolfgang Grabarse ,  Markus Scherer ,  Rene Koschabek

IPC: C08F220/14 ,  C08F210/02 ,  C10M107/04 ,  C10M107/28 ,  C08L91/00

Abstract: The present invention relates to a continuous high-pressure polymerization process for the preparation of a liquid ethylene copolymer which comprises in polymerized form 20 to 60 wt % of ethylene; and at least 20 wt % of an acrylate, which is selected from C1-C22 alkyl (meth)acrylate, where a monomer feed comprising the ethylene and the acrylate is polymerized in the presence of at least 2 wt % of a chain transfer agent. The invention further relates to the liquid ethylene copolymer obtainable by the polymerization process; and to a lubricant comprising the liquid ethylene copolymer obtainable by the polymerization process; and to a method for reducing friction between moving surfaces comprising the step of contacting the surfaces with the lubricant or with the ethylene copolymer.

公开(公告)号：US11453836B2

公开(公告)日：2022-09-27

申请号：US16981569

申请日：2019-03-14

Applicant: BASF SE

Inventor： Martin Wendker ,  Ivette Garcia Castro ,  Jan Strittmatter ,  Karolin Geyer ,  Wolfgang Grabarse ,  Markus Scherer ,  Rene Koschabek

IPC: C10M143/00 ,  C10M143/02 ,  C10M145/14 ,  C10M169/04 ,  C10N20/00 ,  C10N20/02 ,  C10N20/04 ,  C10N30/02

Abstract: The present invention relates to a lubricant comprising a liquid ethylene copolymer which comprises in polymerized form 20 to 60 wt % of ethylene; and at least 20 wt % of an acrylate, which is selected from C1-C22 alkyl (meth)acrylate. It further relates to the liquid ethylene copolymer; and to a method for reducing friction between moving surfaces comprising the step of contacting the surfaces with the lubricant or with the ethylene copolymer.

公开(公告)号：US20150065594A1

公开(公告)日：2015-03-05

申请号：US14456711

申请日：2014-08-11

Applicant: BASF SE

Inventor： Martin Wendker ,  Markus Braun ,  Roland Krauss ,  Francisco Javier Lopez Villanueva

IPC: C08F122/10

CPC classification number: C08F220/06 ,  C08F222/1006

Abstract: A process for preparing water-absorbing polymer particles, comprising polymerisation of a foamed aqueous monomer solution or suspension, drying, grinding and classification, whereas the process further comprising adjusting the amount of foaming agent in the aqueous monomer solution by admixing the aqueous monomer solution with a foaming agent of 1% to 15% by weight based on the amount of ethylenically unsaturated monomer and keeping the solution on a pressure of 6 bar to 15 bar and then expanding the solution.

Abstract translation: 一种制备吸水性聚合物颗粒的方法，包括发泡的含水单体溶液或悬浮液的聚合，干燥，研磨和分级，而该方法还包括通过将单体水溶液与 基于烯键式不饱和单体的量为1重量％至15重量％的发泡剂，并将溶液保持在6巴至15巴的压力下，然后使溶液膨胀。