Rapidly suspendable pulverulent composition

Patent metadata

Field	Value
Publication number	US-2016002472-A1
Application number	US-201414762274-A
Country	US
Kind code	A1
Filing date	Mar 24, 2014
Priority date	Mar 26, 2013
Publication date	Jan 7, 2016
Grant date	—

Abstract

The invention relates to a pulverulent composition preparable by contacting a powder with 0.01 to 50 wt %, based on the overall mass of the composition, of a liquid component comprising at least one copolymer obtainable by polymerizing a mixture of monomers comprising (I) at least one ethylenically unsaturated monomer which comprises at least one radical from the series carboxylic acid, carboxylic salt, carboxylic ester, carboxylic amide, carboxylic anhydride, and carboxylic imide and (II) at least one ethylenically unsaturated monomer having a polyalkylene oxide radical, the liquid component comprising at least 1 wt % of the at least one copolymer and at least 30 wt % of an organic solvent, and the powder which is contacted with the liquid component comprising no inorganic binder. Further disclosed is a binder composition which comprises a pulverulent composition of the invention and an inorganic binder.

First claim

1 - 15 . (canceled)

16 . A pulverulent composition preparable by contacting a powder with 0.01 to 50 wt %, based on the overall mass of the composition, of a liquid component comprising at least one copolymer produced by a process comprising the steps of polymerizing a mixture of monomers comprising
(I) at least one ethylenically unsaturated monomer which comprises at least one radical from the series carboxylic acid, carboxylic salt, carboxylic ester, carboxylic amide, carboxylic anhydride, and carboxylic imide and (II) at least one ethylenically unsaturated monomer having a polyalkylene oxide radical,
the liquid component comprising at least 1 wt % of the at least one copolymer and at least 30 wt % of an organic solvent, and the powder which is contacted with the liquid component comprising no inorganic binder.

17 . A pulverulent composition according to claim 16 , wherein the powder is coated with the liquid component.

18 . The pulverulent composition according to claim 16 , wherein the pulverulent composition comprises at least one compound from the group consisting of silica sand, finely ground quartz, limestone, heavy spar, calcite, aragonite, vaterite, dolomite, talc, kaolin, mica, chalk, titanium dioxide, rutile, anatase, aluminum hydroxide, aluminum oxide, magnesium hydroxide and brucite.

19 . The pulverulent composition according to claim 16 , wherein the pulverulent composition comprises at least one pigment selected from the group consisting of an organic pigment and an inorganic pigment.

20 . The pulverulent composition according to claim 16 , wherein the ethylenically unsaturated monomer (I) is represented by at least one of the following formulae from the group (Ia), (Ib), and (Ic)

wherein
R 1 and R 2 independently of one another are hydrogen or an aliphatic hydrocarbon radical having 1 to 20 C atoms,
Y is H, —COOM a , —CO—O(C q H 2q O) r —R 3 or —CO—NH—(C q H 2q O) r —R 3 ,
M is hydrogen, a mono- or divalent metal cation, ammonium ion, or an organic amine radical,
a is ½ or 1,
R 3 is hydrogen, an aliphatic hydrocarbon radical having 1 to 20 C atoms, a cycloaliphatic hydrocarbon radical having 5 to 8 C atoms, or an optionally substituted aryl radical having 6 to 14 C atoms,
q independently at each occurrence for each (C q H 2q O) unit is identical or different and is 2, 3, or 4,
r is 0 to 200,
Z is O or NR 3 ,

wherein
R 4 and R 5 independently of one another are hydrogen or an aliphatic hydrocarbon radical having 1 to 20 C atoms, a cycloaliphatic hydrocarbon radical having 5 to 8 C atoms, or an optionally substituted aryl radical having 6 to 14 C atoms,
Q is identical or different and is also represented by NH, NR 3 , or O; where R 3 possesses the definition stated above,
R 6 is identical or different and is also represented by (C n H 2n )—SO 3 H, (C n H 2n )—OH, (C n H 2n )—PO 3 H 2 , (C n H 2n )—OPO 3 H 2 , (C 6 H 4 )—SO 3 H, (C 6 H 4 )—PO 3 H 2 , (C 6 H 4 )—OPO 3 H 2 , and (C n H 2n )—NR 8 b , and b is 2 or 3, wherein n is 0, 1, 2, 3 or 4,
R 7 is H, —COOM a , —CO—O(C q H 2q O) r —R 3 , —CO—NH—(C q H 2q O) r —R 3 , wherein M a , R 3 , q, and r are defined above,
R 8 is hydrogen, an aliphatic hydrocarbon radical having 1 to 10 C atoms, a cycloaliphatic hydrocarbon radical having 5 to 8 C atoms, or an optionally substituted aryl radical having 6 to 14 C atoms.

21 . The pulverulent composition according to claim 16 , wherein the ethylenically unsaturated monomer (II) is represented by the following general formula

wherein
p is an integer between 0 and 6,
y is 0 or 1,
v is an integer between 3 and 500,
w independently at each occurrence for each (C w H 2w O) unit is identical or different and is an integer between 2 and 18,
T is oxygen or a chemical bond,
R 1 and R 2 independently of one another are hydrogen or an aliphatic hydrocarbon radical having 1 to 20 C atoms,
R 3 is hydrogen, an aliphatic hydrocarbon radical having 1 to 20 C atoms, a cycloaliphatic hydrocarbon radical having 5 to 8 C atoms, or an optionally substituted aryl radical having 6 to 14 C atoms.

22 . The pulverulent composition according to claim 16 , wherein the fraction of the monomer (I) in the copolymer is 5 to 95 mol %.

23 . The pulverulent composition according to claim 16 , wherein the fraction of the monomer (II) in the copolymer is 1 to 89 mol %.

24 . The pulverulent composition according to claim 16 , wherein the organic solvent is selected from the group consisting of ethyl acetate, n-butyl acetate, 1-methoxy-2-propyl acetate, ethanol, isopropanol, n-butanol, 2-ethylhexanol, 1-methoxy-2-propanol, ethylene glycol, propylene glycol, acetone, butanone, pentanone, hexanone, methyl ethyl ketone, ethyl acetate, butyl acetate, amyl acetate, tetrahydrofuran, diethyl ether, toluene, xylene, higher-boiling alkylbenzenes, a polyethylene glycol ether, a polypropylene glycol ether, a random ethylene oxide/propylene oxide copolymers having an average molar mass of 200 to 2000 g/mol, monoethylene glycol, diethylene glycol, triethylene glycol, monopropylene glycol, dipropylene glycol, tripropylene glycol, methyl, ethyl, propyl, butyl, or higher alkyl polyalkylene glycol ethers having 1, 2, 3, or more ethylene glycol and/or propylene glycol units, a glycerol ethoxylate having a molecular weight of 200 to 20,000 g/mol, pentaerythritol alkoxylates, ethylene carbonate, propylene carbonate, glycerol carbonate, glycerol formal and 2,3-O-isopropylideneglycerol.

25 . The pulverulent composition according to claim 16 , wherein the at least one copolymer is present in the liquid component in a fraction of at least 50 wt % in dissolved form.

26 . The pulverulent composition according to claim 16 , wherein the monomer (I) or (II) comprises a random ethylene oxide/propylene oxide copolymer having a molecular weight of 160 to 10,000 g/mol.

27 . A binder composition comprising a pulverulent composition according to claim 16 and an inorganic binder.

28 . The binder composition according to claim 27 , wherein the inorganic binder is at least one member selected from the group consisting of cement based on Portland cement, white cement, calcium aluminate cement, calcium sulfoaluminate cement, calcium sulfate n-hydrate, and latent hydraulic and pozzolanic binder.

29 . A method for producing a binder composition comprising mixing a pulverulent composition according to claim 16 with an inorganic binder.

30 . A method for treating a powder, comprising the steps of adding to the powder a liquid component comprising at least 30 wt % of an organic solvent and at least 1 wt % of a copolymer obtainable by polymerizing a mixture of monomers comprising
(I) at least one ethylenically unsaturated monomer which comprises at least one radical from the series carboxylic acid, carboxylic salt, carboxylic ester, carboxylic amide, carboxylic anhydride, and carboxylic imide and (II) at least one ethylenically unsaturated monomer having a polyalkylene ether radical, wherein the powder contains no inorganic binder, wherein the development of the dispersing effect of the copolymer over time following addition

Assignees

• Basf Se

Inventors

• Bichler Manfred
• Schinabeck Michael
• Gädt Torben
• Mazanec Oliver

Classifications

• C04B28/04

  Portland cements · CPC title

• C09C1/021

  Calcium carbonates · CPC title

• C09C3/10 Primary

  Treatment with macromolecular organic compounds {(C09C3/006 takes precedence)} · CPC title

• C04B20/1033

  obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• C01P2006/22

  Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability · CPC title