Inorganic binder composition comprising a copolymer
First Claim
Patent Images
1. A composition comprising(α
- ) at least one inorganic binder(β
) at least one water-soluble copolymer based on(a) 0.1 to 20 wt % of at least one monomer of the formula (I),
H2C═
C(R1)—
R2—
O—
(—
CH2—
CH2—
O—
)k—
(—
CH2—
CH(R3)—
O—
)l—
(—
CH2—
CH2—
O—
)m—
R4
(I)where the units —
(—
CH2—
CH2—
O—
)k, —
(—
CH2—
CH(R3)—
O—
)l and —
(—
CH2—
CH2—
O—
)m are arranged in a block structure in the order shown in formula (I)and the radicals have the following meanings;
k;
is from 10 to 150;
l ;
is from 5 to 25;
m;
is from 1 to 15;
R1;
is H or methyl;
the radicals R2;
are each, independently of one another, a single bond or a divalent, linking group selected from the group consisting of —
(CnH2n)— and
—
O—
(Cn′
H2n′
)— and
—
C(O)—
O—
(Cn″
H2n″
)—
, where n, n′ and
n″
are each a natural number from 1 to 6;
R3;
is a hydrocarbon radical having at least 2 carbon atoms or an ether group of the general formula —
CH2—
O—
R3′
, where R3′
is a hydrocarbon radical having at least 2 carbon atoms and the radicals R3 can be identical or different within the group —
(—
CH2—
CH(R3)—
O—
)l;
the radicals R4;
are each, independently of one another, H or a hydrocarbon radical having 1 to 4 carbon atoms, and(b) 25 to 99.9 wt % by weight of at least one monoethylenically unsaturated, hydrophilic monomer (b) different from monomer (a),where the wt % figures are in each case based on the total amount of all monomers in the copolymer and the at least one copolymer has a molar mass average M of 1 500 000 to 30 000 000 g/mol which is determined by the Mark-Houwink relationship (1)
M=([η
]/K)1/α
(1),where K=0.0049, α
=0.8 and [η
] is the intrinsic viscosity.
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Abstract
The present invention relates to a composition comprising (α) at least one inorganic binder and (β) at least one water-soluble copolymer based on (a) 0.1 to 20 wt % of at least one monomer of the formula (I) and (b) 25 to 99.9 wt % of at least one hydrophilic monomer (b) which is different from monomer (a), where the at least one copolymer has a molar mass average M of 1 500 000 to 30 000 000 g/mol. Furthermore, a process for producing this composition is disclosed. A further aspect of the present invention is the use of the copolymer of component (β) as rheological additive in a composition of the invention.
-
Citations
15 Claims
-
1. A composition comprising
(α - ) at least one inorganic binder
(β
) at least one water-soluble copolymer based on(a) 0.1 to 20 wt % of at least one monomer of the formula (I),
H2C═
C(R1)—
R2—
O—
(—
CH2—
CH2—
O—
)k—
(—
CH2—
CH(R3)—
O—
)l—
(—
CH2—
CH2—
O—
)m—
R4
(I)where the units —
(—
CH2—
CH2—
O—
)k, —
(—
CH2—
CH(R3)—
O—
)l and —
(—
CH2—
CH2—
O—
)m are arranged in a block structure in the order shown in formula (I)and the radicals have the following meanings; k;
is from 10 to 150;l ;
is from 5 to 25;m;
is from 1 to 15;R1;
is H or methyl;the radicals R2;
are each, independently of one another, a single bond or a divalent, linking group selected from the group consisting of —
(CnH2n)— and
—
O—
(Cn′
H2n′
)— and
—
C(O)—
O—
(Cn″
H2n″
)—
, where n, n′ and
n″
are each a natural number from 1 to 6;R3;
is a hydrocarbon radical having at least 2 carbon atoms or an ether group of the general formula —
CH2—
O—
R3′
, where R3′
is a hydrocarbon radical having at least 2 carbon atoms and the radicals R3 can be identical or different within the group —
(—
CH2—
CH(R3)—
O—
)l;the radicals R4;
are each, independently of one another, H or a hydrocarbon radical having 1 to 4 carbon atoms, and(b) 25 to 99.9 wt % by weight of at least one monoethylenically unsaturated, hydrophilic monomer (b) different from monomer (a), where the wt % figures are in each case based on the total amount of all monomers in the copolymer and the at least one copolymer has a molar mass average M of 1 500 000 to 30 000 000 g/mol which is determined by the Mark-Houwink relationship (1)
M=([η
]/K)1/α
(1),where K=0.0049, α
=0.8 and [η
] is the intrinsic viscosity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- ) at least one inorganic binder
Specification