公开(公告)号：EP4308542A1

公开(公告)日：2024-01-24

申请号：EP22711238.0

申请日：2022-03-08

Applicant: BASF SE

Inventor： YANG, Yang ,  SUN, Xiao Yu ,  LIANG, Dong ,  BOKERN, Stefan ,  BARTH, Johannes ,  DEGLMANN, Peter

IPC: C07C263/18 ,  C07C265/14

公开(公告)号：EP4268233A1

公开(公告)日：2023-11-01

申请号：EP21845027.8

申请日：2021-12-23

Applicant: BASF SE ,  Basf Advanced Chemicals Co., Ltd.

Inventor： YANG, Zhe Xiong ,  ZHANG, Jian ,  JIANG, Zhi Ting ,  BARTH, Johannes

IPC: G16C20/10 ,  G16C20/30 ,  G16C60/00

公开(公告)号：EP3658653A1

公开(公告)日：2020-06-03

申请号：EP18743018.6

申请日：2018-07-19

Applicant: BASF SE

Inventor： CSIHONY, Szilard ,  THOMAS, Anja ,  DESANTIS, Kevin ,  RABBAT, Philippe ,  MISSKE, Andrea ,  BARTH, Johannes ,  RANFT, Meik ,  MUELLER, Peter ,  GRABARSE, Wolfgang ,  FLECKENSTEIN, Christoph

IPC: C10M145/14

公开(公告)号：EP3411416B1

公开(公告)日：2020-04-08

申请号：EP17702123.5

申请日：2017-02-02

Applicant: BASF SE

Inventor： BARTH, Johannes ,  FONSECA, Gledison ,  FAUL, Dieter ,  ERNST, Martin ,  DETERING, Jürgen ,  LEIFELD, Ferdinand ,  TUERKOGLU, Gazi

IPC: C08F2/10 ,  C02F5/10 ,  C08F2/38 ,  C08F220/06 ,  C08F120/06 ,  C08L33/02

公开(公告)号：EP3411416A1

公开(公告)日：2018-12-12

申请号：EP17702123.5

申请日：2017-02-02

Applicant: BASF SE

Inventor： BARTH, Johannes ,  FONSECA, Gledison ,  FAUL, Dieter ,  ERNST, Martin ,  DETERING, Jürgen ,  LEIFELD, Ferdinand ,  TUERKOGLU, Gazi

IPC: C08F2/10 ,  C02F5/10 ,  C08F2/38 ,  C08F220/06

Abstract: The invention relates to a method for producing aqueous solutions of acrylic acid polymers by polymerizing acrylic acid in feed mode with a radical starter in the presence of hypophosphite in water as a solvent, wherein (i) water and optionally acrylic acid in acidic, non-neutralized form, optionally one or more ethylenically unsaturated comonomers, optionally aqueous hypophosphite solution, and optionally initiator are introduced, (ii) acrylic acid in acidic, non-neutralized form, optionally one or more ethylenically unsaturated comonomers, aqueous radical starter solution, and aqueous hypophosphite solution are added, (iii) after the end of the acrylic acid feed, a base is added to the aqueous solution, wherein the comonomer content does not exceed 30 wt% with respect to the total monomer content, characterized in that the acrylic acid, the aqueous radical starter solution, and the aqueous hypophosphite solution are added in such a way that, over a time period in which at least 75% of the acrylic acid is converted, the molar ratio x of acrylic acid to phosphorus-bonded hydrogen [AA]/[P-H] has a value x that is constant to ±0.5 and that lies in the range of 0.8 to 2.

公开(公告)号：EP4264612A1

公开(公告)日：2023-10-25

申请号：EP21840602.3

申请日：2021-12-17

Applicant: BASF SE ,  Basf Advanced Chemicals Co., Ltd.

Inventor： YANG, Zhe Xiong ,  GAO, Huan Huan ,  LV, Hai Long ,  WANG, Ke ,  WU, Ye Fan ,  SHI, Ke ,  BARTH, Johannes ,  KUEHNER, Andreas ,  PENG-POEHLER, Xuyuan ,  ZHENG, Yi Zhou

IPC: G16C60/00