Composition for inorganic binders

Abstract

The invention relates to a composition for inorganic binders, comprising at least one ketone-formaldehyde condensation product on the basis of a cyclic ketone and at least one anionic or nonionic surfactant and/or a thickener, and also to building material mixtures which comprise this composition, and to the use of the composition. The compositions improve the applications properties of the binder formulations.

Claims

1. A composition, comprising (a) at least one cyclohexanone/formaldehyde/sulfite condensation product, and (b) at least one anionic or nonionic surfactant comprising an ?-sulfo-C8-C18 fatty acid disalt and at least one thickener wherein the thickener is a cellulose ether, and wherein a weight ratio of component (a) to component (b) is in the range from 3:1 to 1:17 8/9, and wherein a weight ration of the component (a) to the thickener is in the range from 0.3:1 to 1:13 8/9.

2. The composition according to claim 1, wherein the weight ratio of component (a) to component (b) is in the range from 3:1 to 1:5.

3. The composition according to claim 2, wherein the weight ratio of component (a) to component (b) is in the range from 1:2 to 1:5.

4. The composition according to claim 1, which is in powder and/or granule form.

5. The composition according to claim 4, obtained by co-spray drying of a mixture comprising components (a) and (b).

6. A building material mixture, comprising the composition according to claim 1 and an inorganic binder.

7. The building material mixture according to claim 6, wherein the inorganic binder is a hydraulic or latent hydraulic binder or a mixture thereof.

8. A method of improving application properties of a building material formulation, the method comprising: adding the composition according to claim 1 to the building material mixture comprising an inorganic binder.

9. A composition, comprising (a) at least one cyclohexanone/formaldehyde/sulfite condensation product, and (b) at least one anionic or nonionic surfactant comprising an ?-sulfo-C8-C18 fatty acid disalt and at least one thickener, wherein the thickener is a cellulose ether, and wherein a weight ratio of component (a) to component (b) is in the range from 3:1 to 1:10, and wherein a weight ratio of component (a) to the thickener is in the range from 1.5:1 to 1:16 2/3.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 shows a photograph of standard mortar without CHR.

(2) FIG. 2 shows a photograph of mortar according to the invention with CHR.

(3) TABLE-US-00002 TABLE 2 Change Amount Amount of in added Tylose FL density [% based 15002 Air after Stability Experiment on dry [methylhydroxy- content 30 min Overall over # Composition mortar] ethylcellulose [%] [%] impression Fluffiness time Comparison None 0.1 29 8.5 0 0 0 specimen 1 C3 0.028 0.1 43 4.4 0.5 0.5 0 2 C4 0.03 0.1 27 5.5 ?1 ?1 ?1 3 C4 0.1 0.1 27 4.1 ?1 ?1 ?1 4 2 0.03 0.1 37 3.6 1.5 1 1 5 7 0.06 0.1 38 4.8 2.5 2.5 2 6 9 0.036 0.1 42 2.6 3 3 2 7 10 0.03 0.1 29 6.1 0.5 0.5 0 8 10 + C3 0.03 + 0.06 0.1 42 2.6 2.5 2.5 1.5 9 10 + C3 0.03 + 0.03 0.1 39 4.8 2 2 0.5 10 4 0.3 0.1 32 5.0 1.0 1 1 11 1 0.03 0.1 43 4.0 1.0 1 1 12 3 0.03 0.1 41 3.7 2.5 2 1.5 13 5 0.03 0.1 46 5.4 1.5 1 2 14 6 0.03 0.1 40 4 1.5 1 2.5 15 8 0.03 0.1 40 4.0 2.5 2.5 2 16 7 0.03 0 23 0.3 1 1 0 17 9 0.03 0 22 0.7 1 1 0 18 1 0.03 0 29 1.2 1 1 0.5

(4) It is evident that the compositions of the invention result in a higher air content and a lower mortar density. Furthermore, mortar fluffiness and stability are improved. All in all, the overall impression is improved.

(5) The next examples show the advantage of formulations of the ketone resin with two different surfactants.

(6) The mortar composition and mixing procedure was the same as above.

(7) The Additive mix is summarized in Table 3. The haptic measurements in this series of experiment summarized in Table 4 are referenced against experiment 19

(8) TABLE-US-00003 TABLE 3 Experiment CHR Surfactant 3 Surfactant 4 Surfactant 5 19 1 1 20 1 1 0.4 21 1 1 0.4

(9) TABLE-US-00004 TABLE 4 Amount added Air Stability Experiment [% based on content Overall over # dry mortar] [%] impression Fluffiness time 19 0.36 16.8 0 0 0 20 0.36 18.5 1.5 2 1.5 21 0.36 17.3 0.75 1 0.75

(10) Further application suitability was tested in a TICS reinforcing mortar whose composition was as follows: Milke cement CEM I 52.5 N 25% Fused silica BCS 319 75% MHEC 15 000 0.08% Baerophob ECO 0.35% Starvis SE 35 F 0.050 Starvis S 5514 F 0.34% Water 20%

(11) Starvis SE 35 is a starch ether available commercially from BASF SE. Starvis S 5514 F is a water-swellable, high molecular mass polymer (superabsorbent) and is likewise available from BASF SE. Baerophob ECO is a complex metal soap for hydrophobizing, available from B?rlocher GmbH. The reinforcing mortar was mixed as a dry mortar and applied with a PFT-G4 render machine; application suitability was evaluated visually and on a tactile basis. The results are reported in table 3 (rating of +3 to ?3 as indicated above, reference=0).

(12) TABLE-US-00005 TABLE 5 Fresh mortar properties With G4 machine tests, Reference Reference + water quantities constant without CHR 0.03 CHR Immediate evaluation in pail: 0 2 smoothness, stickiness, overall appearance, after-thickening Evaluation in pail after 30 min: 0 2 smoothness, stickiness, overall appearance, initial thickening Initial spray behavior/spray pattern/holdout 0 3 Evaluation after initial spraying: 0 2 ease of working, stickiness on tooling Evaluation of mesh insertion after 30 min 0 2 Evaluation of reworking/initial working after 0 2 30 min Stickiness after 30 min 0 3 Overall evaluation 0 2.3

(13) Table 5 shows that the composition of the invention composed of cyclohexanone-formaldehyde resin and thickener (MHEC) leads to a significant improvement in application suitability.

(14) Further application suitability is shown using a hand-applied plaster render. The composition selected was as follows: 750 g of FGD ?-hemihydrate Schwarze Pumpe 210 g of crushed limestone sand 0-3 mm (Heck Wallsystems) 10 g of Bachl PZ1 Perlite (0-1 mm) 30 g of lime hydrate 2 g of BCZ tartaric acid 0.15 g of Texapon K12P 1.9 g of Culminal C4053 0.2 g of Starvis SE35F 490 g of water

(15) The plaster render dry mortar was prepared by stirring with water in a Kitchen Aid, and the application suitability was evaluated visually. The results are shown in table 6.

(16) TABLE-US-00006 TABLE 6 Reference + Fresh mortar properties Reference CHR Immediate evaluation in pail.sup.1) 0 2 Evaluation in pail after 30 min.sup.1) 0 2 Ease of working, stickiness on the 0 3 tooling Evaluation of after working/initial working 0 2 after 30 min Stickiness after 30 min 0 3 Overall evaluation 0 2.4 .sup.1)smoothness, stickiness, overall appearance, after-thickening

(17) Table 6 as well shows that the composition of the invention composed of cyclohexanone-formaldehyde resin and thickener (MHEC) leads to a significant improvement in application suitability.