公开(公告)号：US20180050962A1

公开(公告)日：2018-02-22

申请号：US15560552

申请日：2016-04-20

Applicant: BASF SE

Inventor： Manfred BICHLER ,  Martin WINKLBAUER ,  Torben GAEDT ,  Joachim DENGLER ,  Christoph HESSE ,  Bernhard MAYR

IPC: C04B28/02 ,  C04B40/00 ,  C04B22/00 ,  C04B22/06 ,  C04B24/24 ,  C04B24/26 ,  C04B14/04

CPC classification number: C04B28/02 ,  C04B14/043 ,  C04B22/0086 ,  C04B22/064 ,  C04B24/246 ,  C04B24/2605 ,  C04B24/267 ,  C04B40/0042 ,  C04B2103/14 ,  C04B2103/001

Abstract: The invention relates to a method for producing a calcium silicate hydrate-comprising hardening accelerator in powder form, which comprises the steps of (a) providing an aqueous suspension comprising calcium silicate hydrate; (b) mixing at least one calcium compound, selected from calcium acetate, calcium formate, calcium hydroxide, calcium oxide, and mixtures of two or more of said compounds, with the aqueous suspension comprising calcium silicate hydrate; and (c) drying the resulting mixture. The invention also relates to the hardening accelerator obtainable by this method, to the use thereof, and to building material mixtures which comprise the hardening accelerator.

公开(公告)号：US20220298069A1

公开(公告)日：2022-09-22

申请号：US17619008

申请日：2020-06-08

Applicant: BASF SE

Inventor： Maik SCHLESINGER ,  Michael DIETZSCH ,  Fabian NIEDERMAIR ,  Uwe GEHRIG ,  Torben GAEDT ,  Christoph HESSE

IPC: C04B11/00 ,  C04B24/32

Abstract: The present invention is directed to a construction chemical composition for the preparation of gypsum articles, said construction chemical composition comprising fine calcium sulfate and a dispersant being a polyarylether. Further the present invention is directed to a process for preparing said construction chemical composition as well as an article comprising said construction chemical composition.

公开(公告)号：US20200317905A1

公开(公告)日：2020-10-08

申请号：US16324201

申请日：2017-08-04

Applicant: BASF SE

Inventor： Torben GAEDT ,  Joachim DENGLER ,  Oliver MAZANEC

IPC: C08L51/08 ,  C08F216/14 ,  C08F290/06 ,  C08G6/02 ,  C04B40/00

Abstract: The invention relates to a composition in the form of a solid and suitable as a dispersant for inorganic solids suspensions, comprising A) at least one water-soluble polymer comprising polyether groups, and B) at least one water-soluble condensation product comprising acid groups and/or salts thereof and based on monomers, the monomers comprising at least α) a monomer having a ketone radical and β) formaldehyde. Further disclosed are a method for producing the composition of the invention, and the use thereof in an inorganic binder composition.

公开(公告)号：US20190071545A1

公开(公告)日：2019-03-07

申请号：US16093437

申请日：2017-04-10

Applicant: BASF SE

Inventor： Gerhard ALBRECHT ,  Sophie PUTZIEN ,  Torben GAEDT ,  Michael DIETZSCH ,  Harald GRASSL ,  Iris LOESCHER ,  Luc NICOLEAU

IPC: C08J3/12 ,  C08J3/05 ,  C08K3/08 ,  C08K3/22 ,  C08K3/34 ,  C04B40/00 ,  C04B24/26 ,  C04B24/28

Abstract: The invention relates to a process for modifying polymer particles of an aqueous polymer dispersion in which positively or negatively charged polymer particles are provided with an inorganic salt shell. The inorganic shell leads to an improved drying ability and storage stability of the latex and improves the storage stability of the resulting polymer powder. The obtained polymer powder exhibits an improved viscosity and faster skin-forming time in the final application and is therefore particularly useful in a building material composition.

公开(公告)号：US20180230052A9

公开(公告)日：2018-08-16

申请号：US15554984

申请日：2016-03-03

Applicant: BASF SE

Inventor： Torben GAEDT ,  Joachim DENGLER ,  Martin WINKLBAUER ,  Manfred BICHLER ,  Oliver MAZANEC

IPC: C04B24/28 ,  C08J3/12 ,  C08K3/34 ,  C04B40/00 ,  C04B28/04

CPC classification number: C04B24/281 ,  C04B28/04 ,  C04B40/0042 ,  C04B2103/0057 ,  C04B2103/408 ,  C08J3/122 ,  C08K3/346 ,  C04B14/106 ,  C04B24/2647 ,  C04B14/042 ,  C04B24/165 ,  C04B14/20 ,  C04B24/246 ,  C04B14/104 ,  C04B24/267 ,  C04B40/0608

Abstract: The invention relates to a method for producing a dispersant, comprising the steps of a) providing at least one water-soluble polymer comprising polyether groups, b) providing an inorganic component comprising at least one phyllosilicate which has an integral sheet charge of 0, 1 or 2, c) producing an aqueous suspension comprising the at least one water-soluble polymer comprising polyether groups and the inorganic component comprising the at least one phyllosilicate, and d) spray-drying the aqueous suspension to give a solid. Additionally disclosed is the use of the dispersant of the invention in an inorganic binder composition.