Mixture comprising glyoxylic acid or condensation or addition products thereof

Patent metadata

Field	Value
Publication number	US-12595209-B2
Application number	US-202017433757-A
Country	US
Kind code	B2
Filing date	Feb 14, 2020
Priority date	Feb 27, 2019
Publication date	Apr 7, 2026
Grant date	Apr 7, 2026

Abstract

The present application relates to a mixture comprising at least one compound A selected from glyoxylic acid, salts thereof, and condensation or addition products of glyoxylic acid or salts thereof; and at least one polyhydroxy compound B. Furthermore, the present application relates to a construction material composition comprising said mixture, and to the use of said mixture for modifying the hardening of inorganic binder containing building material formulations, and/or for producing building products.

First claim

The invention claimed is:

1 . A construction material composition comprising at least one inorganic binder and a mixture comprising;
a) at least one compound A selected from the group consisting of glyoxylic acid, salts thereof, condensation or addition products of glyoxylic acid or salts thereof, and mixtures thereof; b) at least one polyhydroxy compound B and/or salts or saturated or unsaturated C 1 -C 20 -carboxylic acid esters thereof, wherein the polyhydroxy compound B is selected from the group consisting of polyalcohols with a carbon to oxygen ratio of from C/O≥1 to C/O≤1.5 and mixtures thereof; and c) at least one compound C selected from:
i) a borate source,
ii) a carbonate source, wherein the carbonate source is selected from inorganic carbonates and organic carbonates,
and mixtures thereof.

2 . The construction material composition according to claim 1 , wherein the compound A is selected from

and
A3) an amine-glyoxylic acid condensate selected from the group consisting of a melamine-glyoxylic acid condensate, an urea-glyoxylic acid condensate, a melamine-urea-glyoxylic acid condensate and a polyacrylamide-glyoxylic acid condensate;

and mixtures thereof;
wherein X is in each case independently selected from H or a cation equivalent Ka, wherein K is an alkali metal, alkaline earth metal, zinc, iron, aluminium, ammonium, or a phosphonium cation, and wherein a is 1/n, wherein n is the valence of the cation.

3 . The construction material composition according to claim 1 , wherein the polyhydroxy compound B is selected from polyalcohols with a carbon to oxygen ratio of from C/O≥1 to C/O≤1.25, and mixtures thereof.

4 . The construction material composition according to claim 1 , wherein the polyhydroxy compound B is selected from sugar alcohols and their condensation products, alkanolamines and their condensation products, carbohydrates, pentaerythritol, trimethylolpropane, and mixtures thereof.

5 . The construction material composition according to claim 1 , wherein the polyhydroxy compound B has a molecular weight of from 62 g/mol to 25000 g/mol.

6 . The construction material composition according to claim 1 , wherein the compound(s) A and the compound(s) B are present in a weight ratio of from 10:1 to 1:10.

7 . The construction material composition according to claim 1 , wherein the compound C is an inorganic carbonate.

8 . The construction material composition according to claim 1 , wherein the mixture further comprises
d) at least one compound D, which is selected from
polycarboxylic acids or salts thereof whose milliequivalent number of carboxyl groups is 5.00 meq/g or higher, assuming all the carboxyl groups to be in unneutralized form;
phosphonates which comprise two or three phosphonate groups and no carboxyl groups; and
α-hydroxy carboxylic acids or salts thereof;
a polyhydroxy compound with a carbon to oxygen ratio of C/O>1.5;
and mixtures thereof.

9 . The construction material composition according to claim 8 , wherein the compound D is a α-hydroxy carboxylic acids or salts thereof.

10 . The construction material composition according to claim 1 , wherein the mixture further comprises
e) at least one dispersant, which is selected from
comb polymers having a carbon-containing backbone to which are attached pendant cement-anchoring groups and polyether side chains,
non-ionic comb polymers having a carbon-containing backbone to which are attached pendant hydrolysable groups and polyether side chains, the hydrolysable groups upon hydrolysis releasing cement-anchoring groups,
sulfonated melamine-formaldehyde condensates,
lignosulfonates,
sulfonated ketone-formaldehyde condensates,
sulfonated naphthalene-formaldehyde condensates,
phosphonate containing dispersants,
cationic (co)polymers, and
mixtures thereof.

11 . The construction material composition according to claim 1 , wherein the inorganic binder is a hydraulic binder, which is selected from Portland cement, calcium aluminate cement, sulfoaluminate cement, and mixtures thereof.

12 . The construction material composition according to claim 1 , wherein the inorganic binder is a latent hydraulic binder.

13 . The construction material composition according to claim 1 , wherein the polyhydroxy compound B is glycerol.

14 . The construction material composition according to claim 1 , wherein the polyhydroxy compound B has a molecular weight of from 62 g/mol to 10000 g/mol.

15 . The construction material composition according to claim 1 , wherein the polyhydroxy compound B has a molecular weight of from 62 g/mol to 1000 g/mol.

16 . The construction material composition according to claim 1 , wherein the compound(s) A and the compound(s) B are present in a weight ratio of from 1:1 to 1:8.

17 . A mixture comprising
a) at least one compound A selected from an amine-glyoxylic acid condensate selected from the group consisting of a melamine-glyoxylic acid condensate, an urea-glyoxylic acid condensate, a melamine-urea-glyoxylic acid condensate, a polyacrylamide-glyoxylic acid condensate, and mixtures thereof; and b) at least one polyhydroxy compound B and/or salts or saturated or unsaturated C 1 -C 20 -carboxylic acid esters thereof, wherein the polyhydroxy compound B is selected from polyalcohols with a carbon to oxygen ratio of from C/O≥1 to C/O≤1.5 and mixtures thereof; and c) at least one compound C selected from:
i) a borate source,
ii) a carbonate source, wherein the carbonate source is selected from inorganic carbonates and organic carbonates,
and mixtures thereof.

18 . The use of the mixture as defined in claim 17 for modifying the hardening of inorganic binder containing building material formulations, and/or for producing building products.

Assignees

• Basf Se

Inventors

• Grassl Harald
• Dengler Joachim
• Bizzozero Julien
• Schöbel Alexander

Classifications

• C04B22/10

  containing carbon in the anion, e.g. carbonates · CPC title

• C04B28/04

  Portland cements · CPC title

• C04B24/2641

  Polyacrylates; Polymethacrylates · CPC title

• C04B24/02

  Alcohols; Phenols; Ethers · CPC title

• C04B22/103

  Acids; Carbonic acids, e.g. from carbon dioxide · CPC title