1
Gerhard Albrecht, Christian Hübsch, Hubert Leitner, Harald Grassl, Alfred Kern: Copolymers based on unsaturated mono-or dicarboxylic acid derivatives and oxyalkylene glycol alkenyl ethers, method for the production and use thereof. Degussa Construction Chemicals, Fulbright & Jaworski L, August 17, 2004: US06777517 (39 worldwide citation)

Copolymers based on unsaturated monocarboxylic or dicarboxylic acid derivatives, oxyalkylene glycol alkenyl ethers, vinylic polyalkylene glycol, polysiloxane or ester compounds and the use thereof as additives for aqueous suspensions based on mineral or bituminous binders are described. The copolyme ...


2
Philipp Wieland, Alexander Kraus, Gerhard Albrecht, Kerstin Becher, Harald Grassl: Polycondensation product based on aromatic or heteroaromatic compounds, method for the production thereof, and use thereof. Construction Research & Technology, Fulbright & Jaworski L, March 22, 2011: US07910640 (8 worldwide citation)

Disclosed is a polycondensation product that is a reaction product of A) an aromatic or heteroaromatic compound containing 5 to 10 C atoms or heteroatoms and is provided with an average of 1 to 300 oxyethylene groups and/or oxypropylene groups per molecule which are linked to the aromatic or heteroa ...


3
Alexander Kraus, Christian Hübsch, Gerhard Albrecht, Harald Grassl, Angelika Hartl, Stefanie Scheul, Alfred Kern: Use of block copolymers as dispersants for aqueous suspensions of solids. Goldschmidt, Construction Research & Technology, Fitch Even Tabin & Flannery, September 16, 2008: US07425596 (8 worldwide citation)

The use of block copolymers which were prepared by polymerization of a poly(alkylene oxide) compound (A) with at least one ethylenically unsaturated monomer compound (B), as dispersants for aqueous suspensions of solids, in particular based on hydraulic binders, such as, for example, cement, lime, g ...


4
Alexander Kraus, Harald Grassl, Angelika Hartl, Martina Brandl: Phosphorus-containing copolymers, method for the production thereof, and use thereof. Construction Research & Technology, Fulbright & Jaworski L, November 30, 2010: US07842766 (4 worldwide citation)

Copolymers which are obtained by free radical copolymerization of a vinylic poly(alkylene oxide) compound (A) with an ethylenically unsaturated monomer compound (B), and the use thereof as dispersants for aqueous solid suspensions, in particular hydraulic binders based on cement, lime, gypsum and an ...


5
Harald Grassl, Jochen Mezger, Alexander Kraus, Gerhard Albrecht: Method for initiating radical polymerizations. Construction Research & Technology, Curatolo Sidoti Co LPA, Joseph G Curatolo, Salvatore A Sidoti, January 29, 2013: US08361302 (4 worldwide citation)

The invention relates to a process for the preparation of polymers by free radical polymerization of monomers in the presence of water, electrochemically produced free radicals being used for initiating the free radical polymerization.


6
Philipp Wieland, Alexander Kraus, Gerhard Albrecht, Harald Grassl, Kerstin Becher: Pulverulent polycondensation products. Construction Research & Technology, Fulbright & Jaworski L L, November 8, 2011: US08053498 (3 worldwide citation)

Pulverulent polycondensation products are described, consisting of a) 5 to 95% by weight of a polycondensation product based on an aromatic or heteroaromatic compound (A) having 5 to 10 C atoms or heteroatoms having at least one oxyethylene or oxypropylene radical and one aldehyde (C) selected from ...


7
Torben Gädt, Harald Grassl, Alexander Kraus: Additive for hydraulically setting compositions. Construction Research & Technology, Curatolo Sidoti Co LPA, Joseph G Curatolo, Salvatore A Sidoti, April 19, 2016: US09315419 (2 worldwide citation)

The present invention relates to an additive for hydraulically setting compositions, comprising an aqueous, colloidally disperse preparation of at least one salt of a polyvalent metal cation and of at least one polymeric dispersant which comprises anionic and/or anionogenic groups and polyether side ...


8
Luc Nicoleau, Torben Gädt, Harald Grassl: Hardening accelerator composition. Construction Research & Technology, Curatolo Sidoti Co LPA, Joseph G Curatolo, Salvatore A Sidoti, July 12, 2016: US09388077 (1 worldwide citation)

The invention concerns a process for the preparation of a hardening accelerator composition by reaction of a water-soluble calcium compound with a water-soluble silicate compound, said reaction being carried out in the presence of an aqueous solution which contains a water-soluble comb polymer suita ...


9
Alexander Kraus, Gerhard Albrecht, Christian Hübsch, Harald Grassl, Angelika Hartl: Statistic comb polymers, method for producing the same and their use. Construction Research & Technology, Fitch Even Tabin & Flannery, October 30, 2012: US08299192 (1 worldwide citation)

Statistic comb polymers obtainable by the radical copolymerization of a vinylic poly(alkylenoxide) compound (A) with an ethylenically unsaturated monomer compound (B) according to the catalytic chain transfer method (CCT). The comb polymers are extremely suitable for hydraulic binder suspensions bas ...


10
Gerhard Albrecht, Helmut Mack, Klaus Lorenz, Mario Vierle, Silke Flakus, Petra Wagner, Christian Scholz, Harald Grassl, Barbara Wimmer: Semi continuously operated method for producing copolymers. Construction Research & Technology, Curatolo Sidoti Co LPA, Joseph G Curatolo, Salvatore A Sidoti, September 17, 2013: US08536252 (1 worldwide citation)

A process for the preparation of a copolymer in semicontinuous operation in a polymerization apparatus, comprising a polymerization reactor connected to a metering device, acid monomer being initially taken in the metering device and polyether macromonomer, acid monomer and water in the polymerizati ...