公开(公告)号：US20210340337A1

公开(公告)日：2021-11-04

申请号：US17281085

申请日：2019-09-25

Applicant: BASF SE

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

IPC: C08J3/12 ,  C08L9/08 ,  C08L5/00 ,  C08L33/02 ,  C08L39/06 ,  C08L31/04 ,  C08L95/00

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 (Tg) of 40° C. or less and a shell comprising a water soluble protective colloid polymer having a Tg 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：US20240301272A1

公开(公告)日：2024-09-12

申请号：US18283229

申请日：2022-03-17

Applicant: BASF SE

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

IPC: C09K8/467 ,  C04B18/02 ,  C04B24/16 ,  C04B24/22 ,  C04B24/26 ,  C04B24/30 ,  C04B24/32 ,  C04B28/02 ,  C04B103/00 ,  C04B103/40 ,  E21B33/14

CPC classification number: C09K8/467 ,  C04B18/022 ,  C04B24/163 ,  C04B24/166 ,  C04B24/22 ,  C04B24/226 ,  C04B24/2676 ,  C04B24/305 ,  C04B24/32 ,  C04B28/02 ,  E21B33/14 ,  C04B2103/0057 ,  C04B2103/406

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：US20200207671A1

公开(公告)日：2020-07-02

申请号：US16620361

申请日：2018-06-06

Applicant: BASF SE

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

IPC: C04B40/00 ,  C04B26/06

Abstract: The present invention relates to a process for producing a redispersible dispersion powder, to the redispersible dispersion powder obtainable by this process, to an aqueous dispersion obtainable by step (1) of this process, and to a building material composition comprising the redispersible dispersion powder and/or the aqueous dispersion, to the use of the redispersible dispersion powder in a building material composition and to the use of the aqueous dispersion for production of a redispersible dispersion powder.