公开(公告)号：US20200039927A1

公开(公告)日：2020-02-06

申请号：US16605973

申请日：2018-04-18

Applicant: BASF SE

Inventor： Juergen WORTMANN ,  Jan SPIELMANN ,  Katharina FEDERSEL ,  Feelly RUETHER

IPC: C07C303/44 ,  C07C303/06

Abstract: A process for purifying alkanesulfonic anhydride which includes:(a) feeding a stream containing alkanesulfonic anhydride, sulfuric acid, high boilers and residual low boilers into a melt crystallization to form crystals of the alkanesulfonic anhydride suspended in mother liquor,(b) performing a solid-liquid separation to remove the crystals from the mother liquor, and(c) optionally washing the crystals to remove mother liquor adhering to the crystals.

公开(公告)号：US20220033583A1

公开(公告)日：2022-02-03

申请号：US17275590

申请日：2019-09-06

Applicant: BASF SE

Inventor： Martin WEBER ,  Feelly RUETHER ,  Rene BACKES ,  Christian MALETZKO

IPC: C08G65/40 ,  C08G65/42 ,  C08G75/23

Abstract: A polyarylene ether comprising in polymerized form A) at least one tri- or higher functional compound and B) isosorbide, isomannide, isoidide or a mixture thereof, wherein the polyarylene ether is a polyarylene ether sulfone or a polyarylene ether ketone, a process for its preparation and its use in the preparation of a coating, film, fiber, foam, membrane or molded article.

公开(公告)号：US20160159724A1

公开(公告)日：2016-06-09

申请号：US14958207

申请日：2015-12-03

Applicant: BASF SE

Inventor： Nicolai Tonio WOERZ ,  Lukas SCHULZ ,  Tim BLASCHKE ,  Marco HARTMANN ,  Feelly RUETHER ,  Yan LI

IPC: C07C51/47

CPC classification number: C07C51/47 ,  C07C51/43 ,  C07C57/04 ,  C07C67/343

Abstract: A process for obtaining acrylic acid, comprising (a) providing a liquid stream S7 comprising acetic acid and acrylic acid, where the molar ratio of acetic acid to acrylic acid in stream S7 is greater than 1:1, (b-1) crystallizing a portion of the acetic acid present in stream S7 to obtain solid crystallized acetic acid in its mother liquor, (b-2) separating the mother liquor from the acetic acid crystallized in (b-1) to obtain the solid crystallized acetic acid and a liquid stream S8 comprising acrylic acid and acetic acid, (c) separating stream S8 into at least one stream S10 depleted of acrylic acid compared to S8 and a stream S11 enriched in acrylic acid compared to S8.

Abstract translation: 一种获得丙烯酸的方法，包括（a）提供包含乙酸和丙烯酸的液体流S7，其中料流S7中乙酸与丙烯酸的摩尔比大于1:1，（b-1）使 存在于料流S7中的乙酸部分以在其母液中获得固体结晶的乙酸，（b-2）将母液从（b-1）中结晶的乙酸分离，得到固体结晶的乙酸和液体 流S8包含丙烯酸和乙酸，（c）与S8相比，将流S8分离成至少一个缺乏丙烯酸的流S10，和与S8相比富含丙烯酸的流S11。

公开(公告)号：US20200095189A1

公开(公告)日：2020-03-26

申请号：US16484016

申请日：2018-02-20

Applicant: BASF SE

Inventor： Somnath Shivaji KADAM ,  Frank JAEKAL ,  Feelly RUETHER ,  Lothar KARRER

IPC: C07C227/42 ,  C07C229/16 ,  C11D3/33 ,  C11D3/39 ,  B01D9/00

Abstract: Process for making solid methylglycine diacetate (MGDA) alkali metal salt (a), said process comprising the steps of (A) providing a 35 to 60% by weight aqueous solution of said MGDA salt having a temperature in the range of from 50 to 90° C., (B) adding 0.01 to 2% by weight of a particulate solid with a pore volume in the range of from 0.25 to 0.75 cm3/g, determined by nitrogen adsorption in accordance with 66134:1998-02 (b), the percentage referring to the content of (a), (C) crystallizing (a), (D) removing said crystalline (a) from the mother liquor.

公开(公告)号：US20180327352A1

公开(公告)日：2018-11-15

申请号：US15774722

申请日：2016-11-08

Applicant: BASF SE

Inventor： Jan SPIELMANN ,  Michael KOCH ,  Juergen WORTMANN ,  Sabine WEIGUNY ,  Feelly RUETHER ,  Robert SENGPIEL

IPC: C07C303/44

CPC classification number: C07C303/44 ,  C07C309/04

Abstract: The invention relates to a method of reprocessing alkanesulfonic acid employed in a chemical process as an agent, catalyst or solvent and comprising the steps of: (a) removing an alkanesulfonic acid-comprising stream from a reaction mixture generated in the chemical process, (b) feeding the alkanesulfonic acid-comprising stream into a melt crystallization as the starting melt to form crystals of the alkanesulfonic acid, of hydrates of the alkanesulfonic acid or of a mixture of both suspended in mother liquor, (c) performing a solid-liquid separation to remove the crystals from the mother liquor, (d) optionally washing the crystals to remove mother liquor adhering to the crystals, (e) recycling the washed or unwashed crystals removed from the mother liquor into the chemical process.

公开(公告)号：US20180319739A1

公开(公告)日：2018-11-08

申请号：US15774847

申请日：2016-11-08

Applicant: BASF SE

Inventor： Jan SPIELMANN ,  Michael KOCH ,  Juergen WORTMANN ,  Feelly RUETHER ,  Sabine WEIGUNY ,  Frieder BORGMEIER

IPC: C07C303/44 ,  B01D9/00 ,  B01D3/00 ,  B01D3/14

Abstract: The invention relates to a process for purifying alkanesulfonic acids which comprises the steps of: (a) distilling a melt comprising crude alkanesulfonic acid (1) to completely or partly remove low boilers, wherein the low boilers are drawn off at the top of a distillation column (3) or of a one-stage evaporation apparatus and a material stream (7) comprising alkanesulfonic acid, high boilers and residual low boilers is withdrawn at the bottom of the distillation column (3) or of the one-stage evaporation apparatus, (b) sending the stream (7) comprising alkanesulfonic acid, high boilers and residual low boilers into a melt crystallization (9) as the starting melt to form crystals of the alkanesulfonic acid, of hydrates of the alkanesulfonic acid or of a mixture of both suspended in mother liquor, (c) performing a solid-liquid separation to remove the crystals from the mother liquor, (d) optionally washing the crystals to remove mother liquor adhering to the crystals.