公开(公告)号：US10927224B2

公开(公告)日：2021-02-23

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: C08K3/08 ,  C08J3/12 ,  C04B40/00 ,  C04B2/00 ,  C04B24/26 ,  C04B24/28 ,  C08J3/05 ,  C08K3/22 ,  C08K3/34 ,  C04B103/00

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：US09802864B2

公开(公告)日：2017-10-31

申请号：US14758980

申请日：2014-01-27

Applicant: BASF SE

Inventor： Christoph Hesse ,  Manfred Bichler ,  Alexander Kraus ,  Luc Nicoleau ,  Torben Gädt ,  Martin Winklbauer

IPC: C04B22/14 ,  C04B24/16 ,  C04B40/00 ,  C04B103/14 ,  C04B103/52

CPC classification number: C04B22/143 ,  C04B22/147 ,  C04B24/16 ,  C04B40/0042 ,  C04B2103/14 ,  C04B2103/52 ,  C04B14/043 ,  C04B24/2647 ,  C04B24/243

Abstract: The invention relates to an additive which can be used as a hardening accelerator for hydraulically setting compositions, comprising a) at least one polymeric dispersant comprising structural units having anionic or anionogenic groups and structural units having polyether side chains, b) at least one sulfonic acid compound of the formula (I) in which A1 is NH2, NHMe, NMe2, N(CH2—CH2—OH)2, CH3, C2H5, CH2—CH2—OH, phenyl, or p-CH3-phenyl and Kn+ is an alkali metal cation, or one equivalent of a cation selected from Ca2+, Mg2+, Sr2+, Ba2+, Zn2+, Fe2+, Fe3+, Al3+, Mn2+, or Cu2+, and c) calcium silicate hydrate particles.

公开(公告)号：US09598315B2

公开(公告)日：2017-03-21

申请号：US14651774

申请日：2014-01-27

Applicant: BASF SE

Inventor： Christoph Hesse ,  Luc Nicoleau

IPC: C04B28/02 ,  C04B28/10 ,  C04B22/10 ,  C04B28/06 ,  C04B28/14 ,  C04B28/16 ,  C04B40/00 ,  C04B24/26 ,  C04B24/32 ,  C04B103/14

CPC classification number: C04B22/10 ,  C04B24/2688 ,  C04B24/32 ,  C04B28/02 ,  C04B28/06 ,  C04B28/065 ,  C04B28/14 ,  C04B28/16 ,  C04B40/0042 ,  C04B2103/14 ,  Y02W30/92 ,  Y02W30/94 ,  C04B22/0086 ,  C04B24/246 ,  C04B14/043 ,  C04B24/243 ,  C04B2103/006 ,  C04B24/267 ,  C04B24/165 ,  C04B14/106 ,  C04B14/108 ,  C04B18/08 ,  C04B18/141 ,  C04B18/146 ,  C04B24/2658 ,  C04B2103/0088

Abstract: The invention relates to a process for the preparation of a hardening accelerator composition by reacting a calcium source selected from calcium hydroxide, calcium oxide with a water-soluble silicate compound in the presence of at least one water-soluble polymeric dispersing agent and the hardening accelerator composition obtainable by said process. The composition has a low content of anions and of alkali cations and is therefore broadly applicable in building material mixtures.