公开(公告)号：WO2022200156A1

公开(公告)日：2022-09-29

申请号：PCT/EP2022/056923

申请日：2022-03-17

Applicant: BASF SE

Inventor： SCHMIDTKE, Christian ,  ASSMANN, Andrea ,  WINKLBAUER, Martin ,  WOLFERSTETTER, Lisa

IPC: C04B28/04 ,  C04B40/00 ,  C09K8/467 ,  C09K8/487 ,  C04B103/46

Abstract: Water-dispersible polymer powder composition for use as additive in cementing in subterranean formations comprising at least particles of a styrene-butadiene polymer, a water-soluble polymer, and a non-ionic emulsifier, wherein the styrene-butadiene polymer particles are at least partly covered by and/or embedded in a composition comprising at least the water-soluble polymer, process of making such compositions, by spray-drying an aqueous dispersion comprising said particles of a styrene-butadiene polymer and a water- soluble polymer, wherein at least one non-ionic emulsifier is added before or after spray-drying, and the use of such water-dispersible polymer powder compositions for cementing in subterranean formations penetrated by at least a well bore.

公开(公告)号：WO2020068955A1

公开(公告)日：2020-04-02

申请号：PCT/US2019/052919

申请日：2019-09-25

Applicant: BASF SE ,  AVRAMIDIS, Kostas S.

Inventor： AVRAMIDIS, Kostas S. ,  GAEDT, Torben ,  WINKLBAUER, Martin ,  SCHMIDTKE, Christian ,  PUTZIEN, Sophie ,  SCHNEIDER, Susanne

IPC: C08L95/00 ,  C08L25/10 ,  C08L31/04 ,  C08L35/06 ,  C08F218/04 ,  C08F297/04

Abstract: Provided herein are dispersible copolymer powders and asphalt compositions comprising the same. The dispersible copolymer powders comprise a core polymer having a glass transition temperature (T g ) of 40°C or less and a shell comprising a water soluble protective colloid polymer having a T g of 50°C or greater. The core polymer can be derived from a vinyl aromatic monomer, a 1,3-diene monomer, and optionally one or more ethylenically-unsaturated monomers. The protective colloid polymer can be selected from a polyvinyl alcohol, a polyvinyl pyrrolidone, a polysaccharide, other water soluble polymers, or a combination thereof. Methods of preparing a styrene-butadiene modified asphalt without significantly increasing the viscosity, comprising adding the dispersible copolymer powder to an asphalt composition, wherein the addition of the copolymer polymer increases the viscosity of the asphalt by 100% or less at 135°C within 2 hours of mixing are also described herein.

公开(公告)号：WO2022248630A1

公开(公告)日：2022-12-01

申请号：PCT/EP2022/064341

申请日：2022-05-25

Applicant: BASF SE

Inventor： SCHMIDTKE, Christian ,  DENGLER, Joachim ,  DESCHNER, Florian ,  GRASSL, Harald ,  SEIP, Klaus

IPC: C04B28/04 ,  C04B28/16 ,  C04B40/00 ,  C04B111/27

Abstract: The present invention relates to a dispersion composition comprising a cement-based sealing slurry comprising a) a Portland cement comprising an aluminate phase and b) a polymer dispersion and an additive mixture and the use thereof.

公开(公告)号：WO2018224519A1

公开(公告)日：2018-12-13

申请号：PCT/EP2018/064815

申请日：2018-06-06

Applicant: BASF SE

Inventor： SCHMIDTKE, Christian ,  JAHNS, Ekkehard ,  GAEDT, Torben ,  WINKLBAUER, Martin ,  SEIP, Klaus ,  LOESCHER, Iris

IPC: C04B40/00

Abstract: Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines redispergierbaren Dispersionspulvers, das redispergierbare Dispersionspulver, das nach diesem Verfahren erhältlich ist, eine wässrige Dispersion, die nach dem Schritt (1) dieses Verfahrens erhältlich ist, und eine Baustoffzusammensetzung enthaltend das redispergierbare Dispersionspulver und/oder die wässrige Dispersion, die Verwendung des redispergierbaren Dispersionspulvers in einer Baustoffzusammensetzung und die Verwendung der wässrigen Dispersion zur Herstellung eines redispergierbaren Dispersionspulvers.