Caramelized sugar as liquefier for mineral binding agent compositions

Patent metadata

Field	Value
Publication number	US-9688577-B2
Application number	US-201415028802-A
Country	US
Kind code	B2
Filing date	Oct 20, 2014
Priority date	Oct 25, 2013
Publication date	Jun 27, 2017
Grant date	Jun 27, 2017

Abstract

The invention relates to the use of caramelized sugar as a liquefier for mineral binding agent compositions.

First claim

The invention claimed is:

1. A method of forming a cured composition, the method comprising: forming a mineral binder composition comprising caramelized sugar as a plasticizer and at least one further plasticizer, with the at least one further plasticizer comprising a polycarboxylate ether, and curing the mineral binder composition, wherein
the mineral binder composition comprises aggregates, with the aggregates having a methylene blue value according to the DIN EN 933-9 standard in the range of 0.1-100 g/kg with a particle size class 0-75 μm.

2. The method as claimed in claim 1 , wherein the caramelized sugar extends the working time of the mineral binder composition.

3. The method as claimed in claim 1 , wherein the caramelized sugar has a Hue Index color tone in the range of from 3.0-8.0.

4. The method as claimed in claim 1 , wherein the caramelized sugar comprises caramel color of class INS No. 150a, 150b, 150c, and/or 150d.

5. The method as claimed in claim 1 , wherein the caramelized sugar is used in an amount in the range of from 0.0001-10 wt. %, based in each case on the dry matter content of the caramelized sugar and based on the mineral binder content.

6. The method as claimed in claim 1 , wherein the mineral binder composition comprises aggregates, where the aggregates contain 0.001-40 wt. % of fines having a particle size ≦125 μm, based on the total weight of all aggregates.

7. The method as claimed in claim 1 , wherein a weight ratio of caramelized sugar to the further plasticizer is in a range of from 1:50-50:1.

8. A composition comprising caramelized sugar and at least one further plasticizer, with the at least one further plasticizer comprising a polycarboxylate ether.

9. A mineral binder composition comprising a composition as claimed in claim 8 , and further comprising at least one mineral binder.

10. A cured binder composition obtainable by mixing of a mineral binder composition as claimed in claim 9 with water and subsequent curing.

11. A method for producing a composition as claimed in claim 8 , comprising adding caramelized sugar to at least one further plasticizer, with the at least one further plasticizer comprising a polycarboxylate ether.

12. The mineral binder composition as claimed in claim 9 , wherein the composition further comprises aggregates, with the aggregates having a methylene blue value according to the DIN EN 933-9 standard in the range of 0.1-100 g/kg with a particle size class 0-75 μm.

13. The method as claimed in claim 1 , wherein the range is 15-100 g/kg.

14. The method as claimed in claim 1 , wherein the range is 15-75 g/kg.

15. The method as claimed in claim 1 , wherein the range is 25-60 g/kg.

16. The mineral binder composition as claimed in claim 9 , wherein the range is 15-100 g/kg.

17. The mineral binder composition as claimed in claim 9 , wherein the range is 15-75 g/kg.

18. The mineral binder composition as claimed in claim 9 , wherein the range is 25-60 g/kg.

19. The method as claimed in claim 1 , wherein the caramelized sugar comprises caramel color of class INS No. 150a and/or 150d.

20. The method as claimed in claim 1 , wherein the caramelized sugar comprises caramel color of class INS No. 150a.

21. The composition as claimed in claim 8 , wherein the caramelized sugar comprises caramel color of class INS No. 150a and/or 150d.

22. The composition as claimed in claim 8 , wherein the caramelized sugar comprises caramel color of class INS No. 150a.

23. The mineral binder as claimed in claim 9 , wherein the caramelized sugar comprises caramel color of class INS No. 150a and/or 150d.

24. The mineral binder as claimed in claim 9 , wherein the caramelized sugar comprises caramel color of class INS No. 150a.

Assignees

• Sika Tech Ag

Inventors

• Bürge Christian
• Kurz Christophe
• Peter André

Classifications

• C04B28/02

  containing hydraulic cements other than calcium sulfates · CPC title

• C04B24/283

  Polyesters · CPC title

• C04B24/18

  Lignin sulfonic acid or derivatives thereof, e.g. sulfite lye · CPC title

• C04B24/10 Primary

  Carbohydrates or derivatives thereof · CPC title

• C04B2103/32

  Superplasticisers · CPC title