Rheology modifier for inorganic suspensions

Patent metadata

Field	Value
Publication number	US-2018346378-A1
Application number	US-201515527798-A
Country	US
Kind code	A1
Filing date	Nov 19, 2015
Priority date	Nov 20, 2014
Publication date	Dec 6, 2018
Grant date	—

Abstract

The invention relates to a composition comprising (α) at least one water-soluble polymer based on (a) 5 to 40 wt % of at least one monomer of the formula (I) and (b) 5 to 95 wt % of at least one monomer (b) which comprises acid groups and is different from monomer (a), and (β) at least one associative thickener. Further disclosed is a mixture comprising an inorganic binder and also the composition of the invention. A further aspect of the present invention is the use of the composition of the invention as a rheological additive.

First claim

1 . A composition comprising
(α) at least one water-soluble polymer based on
(a) 5 to 40 wt % of at least one monomer of the formula (I),
Z—R 1 —O—(—CH 2 —CH 2 —O—) k —(—CH 2 —CH(R 2 )—O—) l —(—CH 2 —CH 2 —O—) m —R 3   (I)

where the units —(—CH 2 CH 2 —O—) k , —(—CH 2 —CH(R 2 )—O—) l and —(—CH 2 —CH 2 —O—) m , where present, are arranged in block structure in the sequence shown in formula (I), and the radicals have the following definitions:
Z: is an organic radical having at least one polymerizable structural group;
k: is a number from 10 to 150;
l: is a number from 1 to 25;
m: is a number from 0 to 15;
R 1 : is independently at each occurrence a single bond or a divalent linking group selected from the group consisting of —(C n H 2n )—, —O—(C n′ H 2n′ )— and —C(O)—O—(C n″ H 2n″ )—, where n, n′ and n″ are a natural number from 1 to 6;
R 2 : is a hydrocarbyl radical having at least 2 carbon atoms, or an ether group of the general formula —CH 2 —O—R 2′ , where R 2′ is a hydrocarbyl radical having at least 2 carbon atoms and where R 2 within the group —(—CH 2 —CH(R 2 )—O—) l may be identical or different;
R 3 : is independently at each occurrence H or a hydrocarbyl radical having 1 to 24 carbon atoms, and also

(b) 5 to 95 wt % of at least one polymerizable monomer (b), which is different from monomer (a) and comprises acid groups, and
(β) at least one associative thickener, where the associative thickener (β) has an average molecular weight of 200,000 g/mol to 30,000,000 g/mol, as determined by the Mark-Houwink relationship (1),
M ([η]/ K ) 1/αtm ( 1)

where K=0.0049, α=0.8, └η┘ is the intrinsic viscosity, and M is the average molecular weight, and
the water-soluble polymer (α) has an average molecular weight of 5000 to 100,000 g/mol, as determined by gel permeation chromatography.

2 . The composition according to claim 1 , wherein the acid group of the monomer (b) comprises at least one acid group from the group consisting of carboxyl, phosphono, sulfino, sulfo, sulfamido, sulfoxy, sulfoalkyloxy, sulfinoalkyloxy, and phosphonooxy.

3 . The composition according to claim 1 , wherein the at least one water-soluble polymer (a) is a polycondensation product based on
(a) at least one monomer of the formula (I), where Z is an aromatic or heteroaromatic, and (b) where the monomer (b) is phosphated or sulfonated and has an aromatic or heteroaromatic as the polymerizable group.

4 . The composition according to claim 3 , wherein
Z in formula (I) is identical or different and is represented by a substituted or unsubstituted, aromatic or heteroaromatic compound having 5 to 10 carbon atoms in the aromatic system, and (b) is represented by the following general formula (II)

where
D is identical or different and is represented by a substituted or unsubstituted, aromatic or heteroaromatic compound having 5 to 10 carbon atoms in the aromatic system,
where
E is identical or different and is represented by N, NH or O,
where
m=2 if E=N and m=1 if E=NH or O,
where
R 4 and R 5 independently of one another are identical or different and are represented by a branched or unbranched C 1 to C 10 alkyl radical, C 5 to C 8 cycloalkyl radical, aryl radical, heteroaryl radical or H,
where b
is identical or different and is represented by an integer from 0 to 300.

5 . The composition according to claim 4 , wherein water-soluble polymer (α) is a polycondensation product which comprises a structural unit (III) which is represented by the following formula

where
R 6a and R 6b independently of one another are identical or different and are represented by H, CH 3 , COOH or a substituted or unsubstituted, aromatic or heteroaromatic compound having 5 to 10 carbon atoms, and
Y independently at each occurrence is identical or different and is represented by structural units which correspond to formula (I) and formula (II), or other constituents of the polycondensation product.

6 . The composition according to claim 1 , wherein the water-soluble polymer (α) is at least one copolymer based on
(a) at least one monomer of the formula (I), where Z is an ethylenically unsaturated radical and
(b) where the monomer (b) has at least one ethylenically unsaturated radical.

7 . The composition according to claim 6 , wherein the ethylenically unsaturated monomer (b) is represented by at least one of the following general formulae from the group consisting of (IV), (V) and (VI)

where
R 7 and R 8 independently of one another are hydrogen or an aliphatic hydrocarbyl radical having 1 to 20 carbon atoms
B is H, —COOM a , —CO—O(C q H 2q O) r —R 9 , or —CO—NH—(C q H 2q O) r —R 9
M is hydrogen, a mono- or divalent metal cation, ammonium ion or an organic amine radical
a is ½ or 1
R 9 is hydrogen, an aliphatic hydrocarbyl radical having 1 to 20 carbon atoms, a cycloaliphatic hydrocarbyl radical having 5 to 8 carbon atoms, or an optionally substituted aryl radical having 6 to 14 carbon atoms
q independently at each occurrence for each (C q H 2q O) unit identically or differently is 2, 3 or 4, and
r is 0 to 200
Z is O, NR 3 ,

where
R 10 and R 11 independently of one another are hydrogen or an aliphatic hydrocarbyl radical having 1 to 20 carbon atoms, a cycloaliphatic hydrocarbyl radical having 5 to 8 carbon atoms, or an optionally substituted aryl radical having 6 to 14 carbon atoms
R 12 is identical or different and is represented by (C n H 2n )—SO 3 H with n=0, 1, 2, 3 or 4, (C n H 2n )—OH with n=0, 1, 2, 3 or 4; (C n H 2n )—PO 3 H 2 with n=0, 1, 2, 3 or 4, (C n H 2n )—OPO 3 H 2 with n=0, 1, 2, 3 or 4, (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 14 b with n=0, 1, 2, 3 or 4 and b=2 or 3
R 13 is H, —COOM a , —CO—O(C q H 2q O) r —R 9 , or —CO—NH—(C q H 2q O) r —R 9 , where M a , R 9 , q and r possess definitions stated above
R 14 is hydrogen, an aliphatic hydrocarbyl radical having 1 to 10 carbon atoms, a cycloaliphatic hydrocarbyl radical having 5 to 8 carbon atoms, or an optionally substituted aryl radical having 6 to 14 carbon atoms
Q is identical or different and is represented by NH, NR 13 or O;
where R 15 is an aliphatic hydrocarbyl radical having 1 to 10 carbon atoms, a cycloaliphatic hydrocarbyl radical having 5 to 8 carbon atoms, or an optionally substituted aryl radical having 6 to 14 carbon atoms.

8 . The composition according to claim 6 , wherein Z in formula (I) is represented by at least one radical of the formula (VII)

in which
R 7 and R 8 have the definitions stated above.

9 . The composition according to claim 1 , wherein the at least one associative thickener (β) comprises
at least one water-soluble copolymer based on
(c) 0.1 to 35 wt % of at least one monomer of the formula (VIII),
H 2 C═C(R 17 )—R 1 —O—(—CH 2 —CH 2 —O—) k —(—CH 2 —CH(R 2 )—O—) l —(—CH 2 —CH 2 —O—) m —R 3   (VIII)

where the units —(—CH 2 —CH 2 —O—) k , —(—CH 2 —CH(R 2 )—O—) l and —(—CH 2 —CH 2 —O—) m ,

Assignees

• Basf Se

Inventors

• Schinabeck Michael
• Mazanec Oliver
• Hillesheim Nina Susanne
• Eissmann Diana
• Friedrich Stefan

Classifications

• C04B2103/44

  Thickening, gelling or viscosity increasing agents · CPC title

• C04B2103/0079

  Rheology influencing agents · CPC title

• C04B24/165 Primary

  containing polyether side chains · CPC title

• C04B40/0039

  Premixtures of ingredients · CPC title

• C04B24/2647

  containing polyether side chains · CPC title