公开(公告)号：US20230220206A1

公开(公告)日：2023-07-13

申请号：US18008680

申请日：2021-06-08

Applicant: BASF SE

Inventor： Susanne SCHNEIDER ,  Karin SCHREINER ,  Stefanie Silvia FAUST ,  Kerstin HAFNER ,  Michael DIETZSCH

IPC: C08L95/00 ,  C08K5/06 ,  C08K5/20

CPC classification number: C08L95/00 ,  C08K5/06 ,  C08K5/20 ,  C08L2555/10 ,  C08L2555/34 ,  C08L2555/40

Abstract: The present invention relates to a binder composition comprising a bituminous binder and at least one rejuvenating agent. The present invention further relates to a method for evaluating the efficiency of a rejuvenating agent in a binder composition.

公开(公告)号：US20220402819A1

公开(公告)日：2022-12-22

申请号：US17637065

申请日：2020-08-27

Applicant: BASF SE

Inventor： Timo MANGEL ,  Maik SCHACHT ,  Michael DIETZSCH ,  Frank WAGNER ,  Uwe VAGT ,  Susanne SCHNEIDER ,  Carmen-Elena CIMPEANU ,  Ekkehard JAHNS ,  Sophie PUTZIEN

IPC: C04B26/26 ,  C04B24/26 ,  C04B38/10

Abstract: The invention relates to a process for preparing foamed polymer-modified bitumen compositions and to the use thereof for the production of asphalt. The invention also relates to foamed polymer-modified bitumen compositions obtainable by this process. Furthermore, the invention relates to a process for producing an asphalt composition and to the use thereof in road applications. The process for the preparation of the foamed polymer-modified bitumen composition comprises the following steps: i) Heating and pressurizing a bitumen to obtain a hot flowing bitumen stream, ii) Injecting under pressure an aqueous polymer dispersion into the hot flowing bitumen stream obtained in step i), to obtain a pressurized flowing mixed stream of the bitumen and the aqueous polymer dispersion; iii) Expanding the flowing mixed stream, in particular to atmospheric pressure, such that the water contained in the aqueous polymer dispersion vaporizes and foams the mixed stream to obtain a foamed polymer-modified bitumen.

公开(公告)号：US20200231499A1

公开(公告)日：2020-07-23

申请号：US16487702

申请日：2018-02-22

Applicant: BASF SE

Inventor： Christoph HESSE ,  Michael DIETZSCH ,  Attila DAL ,  Maria BECKER

IPC: C04B14/04 ,  C04B28/18

Abstract: A curing accelerator composition for building chemical mixtures comprises a mineral constituent and a polymeric water-soluble dispersant. The mineral constituent comprises a semi-ordered calcium silicate hydrate having an apparent crystallite size of 15 nm or less and less than 35% by weight of crystalline phases other than the semi-ordered calcium silicate hydrate. The composition displays a more pronounced accelerating effect than comparative compositions in which the mineral component comprises a calcium silicate hydrate having a higher degree of crystallinity.

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：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：US20230365468A1

公开(公告)日：2023-11-16

申请号：US18030511

申请日：2021-10-05

Applicant: BASF SE

Inventor： Michael DIETZSCH ,  Christoph HESSE

IPC: C04B28/18 ,  C04B24/32 ,  C04B40/00

CPC classification number: C04B28/186 ,  C04B24/32 ,  C04B40/005 ,  C04B2103/408

Abstract: The present invention relates to a process for producing calcium silicate hydrate under hydrothermal conditions, wherein an organic compound is added in at least one of the process steps and wherein the organic compound has a molecular weight of 100 to 600 g/mol and from 0.02 to 0.035 functional groups per gram of the organic compound, wherein the functional groups being selected from —OH, —COOH, 'COOMa, —SO3H or —SO3Ma, or —C(═O)H, wherein M is hydrogen, a mono-, di- or trivalent metal cation, ammonium ion or an organic amine radical and a is ⅓, ½ or 1. Further the invention is directed to the calcium silicate hydrate produceable according to the process of the present invention and its use as curing accelerator for hydraulic binders.

公开(公告)号：US20190119453A1

公开(公告)日：2019-04-25

申请号：US16092140

申请日：2017-04-07

Applicant: BASF SE

Inventor： Michael DIETZSCH ,  Peter LEIDINGER ,  Sophie PUTZIEN ,  Gerhard ALBRECHT ,  Maik SCHLESINGER

IPC: C08J3/12 ,  C08J3/05 ,  C08K3/36

Abstract: The invention relates to a process for preparing core-shell particles having a polymer core and a continuous silica shell. The in situ formed core-shell architecture suppresses film formation of the polymer and simplifies the subsequent drying process. The finally obtained free flowing polymer powder exhibits improved redispersibility and storage stability and imparts building material compositions improved viscosity and faster skin-forming time.