Coating system having high surface roughness

Patent metadata

Field	Value
Publication number	US-11560492-B2
Application number	US-201816630798-A
Country	US
Kind code	B2
Filing date	Jul 9, 2018
Priority date	Jul 13, 2017
Publication date	Jan 24, 2023
Grant date	Jan 24, 2023

Abstract

A coating system including at least one reactive resin system RH, at least one thixotropic assistant TH selected from the group consisting of urea preparations HZ and fibers FS and at least one inorganic aggregate AZ having a particle size in the range from 0.2 to 3.0 mm. The coating system has a viscosity as measured with a shear rate of 1 s−1 of 9000-100,000 Pas and a viscosity as measured with a shear rate of 100 s−1 of 400-15,000 Pas. The coating system is notable for high surface roughness and for reliable and long-term bonding of the aggregates to the coating with no need for sealing. There is also no need for the coating to be subsequently strewn with aggregates such as sand, for example.

First claim

The invention claimed is:

1. A coating system comprising:
at least one reactive resin system RH;
at least one thixotropic assistant TH selected from the group consisting of urea preparations HZ and fibers FS;
at least one inorganic aggregate AZ having a particle size in the range from 0.2 to 3.0 mm;
wherein the coating system 3 min after the mixing of all the components of the coating system apart from the at least one inorganic aggregate AZ has a viscosity as measured at 23° C. using a rheometer with heatable plate (Rheotec MRC300) (0.5 mm gap, measurement plate diameter: 50 mm (plate/plate)) with a shear rate of 1 s-1 of 9000-100,000 Pas and a viscosity as measured at a shear rate of 100 s-1 of 400-15,000 Pas.

2. The coating system as claimed in claim 1 , wherein the inorganic aggregate AZ has a grading curve in the range from 0.3 to 2.0 mm.

3. The coating system as claimed in claim 1 , wherein the inorganic aggregate AZ has a particle size in the range from 0.3 to 2.0 mm.

4. The coating system as claimed in claim 1 , wherein the fibers FS are glass fibers, carbon fibers or polymeric fibers.

5. The coating system as claimed in claim 1 , wherein the urea preparation HZ is a solution of a urea urethane, in an aprotic solvent.

6. The coating system as claimed in claim 5 , wherein the urea urethane is synthesized from a monofunctional C4 to C22 alkyl alcohol or cycloalkyl alcohol, a diisocyanate, and a diamine.

7. The coating system as claimed in claim 1 , wherein the coating system has a viscosity as measured at 23° C. using a rheometer with heatable plate (Rheotec MRC300) (0.5 mm gap, measurement plate diameter: 50 mm (plate/plate)) with a shear rate of 1 s-1 of 10,000-80,000 Pas, and a viscosity as measured at 23° C. using a rheometer with heatable plate (Rheotec MRC300) (0.5 mm gap, measurement plate diameter:
50 mm (plate/plate)) with a shear rate of 100 s-1 of 400-12,000 Pas.

8. The coating system as claimed in claim 1 , wherein the reactive resin of the reactive resin system RH is selected from the group consisting of epoxy resins, polyurethanes, polyureas, mixtures of polyurethanes and polyureas, polymethacrylates, and polyacrylates.

9. The coating system as claimed in claim 8 , wherein the reactive resin of the reactive resin system RH is selected from the group consisting of epoxy resins and polyurethanes.

10. A cured composition obtained from a coating system as claimed in claim 1 , after the mixing of the components and their curing.

11. The use of A coating formed from a coating system as claimed in claim 1 .

12. A floor coating system, comprising
optionally a primer and/or an undercoat and/or a repair compound or leveling compound,
at least one layer of the coating system described in claim 1 ,
optionally a seal.

13. The floor coating system as claimed in claim 12 , applied to an industrial floor, a bridge, or a parking deck.

14. A method for producing a coating with a coating system as claimed in claim 1 , the method comprising the following method steps:
a) mixing reactive resin system RH, thixotropic assistant TH, and inorganic aggregates AZ as in claim 1 to give a coating system as claimed in claim 1 ,
b) applying the resulting coating system to a substrate,
c) machining the applied coating system, and
d) curing the applied coating system.

Assignees

• Sika Tech Ag

Inventors

• Stöhr Benjamin
• Niethammer Matthias
• Pusel Thomas
• Grötzinger Jochen
• Kühner Stefan

Classifications

• C09D5/04

  Thixotropic paints · CPC title

• C08K3/346

  Clay · CPC title

• C08K3/36

  Silica · CPC title

• C08K5/21

  Urea; Derivatives thereof, e.g. biuret · CPC title

• C09D175/04 Primary

  Polyurethanes · CPC title