Composition for a low shrinkage pasty fill and finishing material, pasty fill and finishing material, and method for producing a pasty fill and finishing material

Patent metadata

Field	Value
Publication number	US-12091568-B2
Application number	US-201817289856-A
Country	US
Kind code	B2
Filing date	Nov 6, 2018
Priority date	Nov 6, 2018
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

The invention relates to a composition for a pasty fill and finishing material, a pasty fill and finishing material, and a method for producing a pasty fill and finishing material. The composition comprises at least one filler, at least one binding agent, and additives, wherein the at least one filler has a density dependent flowability (ffρ) value of from 3 to 20.

First claim

The invention claimed is:

1. A composition for a pasty fill and finishing material, comprising at least one filler, at least one binding agent, and additives, wherein the at least one filler has a density dependent flowability (ff ρ ) value of from 3 to 20, wherein the composition further comprises at least a second and a third filler, wherein the second and the third filler of the composition comprise at least a first and a second carbonate, wherein the particle size distribution of the first carbonate is different from the particle size distribution of the second carbonate, wherein the first carbonate has a D98 value of from 70 to 120 μm and the second carbonate has a D98 value of from 140 to 180 μm.

2. The composition according to claim 1 , wherein the at least one filler is a hollow, spherical aluminum silicate.

3. The composition according to claim 2 , wherein the composition comprises 1.0 to 10.0% by weight of the total composition of the hollow, spherical aluminum silicate and/or
wherein the spherical aluminum silicate comprises aluminum oxide of from 5 to 35% by weight of the hollow, spherical aluminum silicate and/or silicon dioxide of from 50 to 80% by weight of the hollow, spherical aluminum silicate.

4. The composition according to claim 2 , wherein the hollow, spherical aluminum silicate has a D50 value of from 90 to 200 μm and/or has a D98 value of from 150 to 400 μm.

5. The composition according to claim 2 , wherein the hollow, spherical aluminum silicate has a D50 value of from 100 to 180 μm and/or has a D98 value of from 170 to 250 μm.

6. The composition according to claim 1 , wherein the first and the second carbonate are selected from a group consisting of calcium carbonate, calcium magnesium carbonate or any mixture thereof.

7. The composition according to claim 1 , wherein the first and/or the second carbonate has/have a D50 value of from 10 to 30 μm.

8. The composition according to claim 1 , wherein the at least one binding agent is selected from a group consisting of poly(ethylene-vinyl acetate), polyvinyl acetate, polyacrylate, polyvinyl alcohol or any combinations thereof, and/or
wherein the composition comprises 0.1 to 20.0% by weight of the total composition of the at least one binding agent.

9. The composition according to claim 1 , wherein the composition further comprises at least a fourth filler, wherein this fourth filler is selected from the group consisting of sepiolite, attapulgite, talc, vermiculite, montmorillonite, illite, kaolinite or hectorite, and/or
wherein the composition comprises 0.1 to 10.0% by weight of the total composition of a fourth filler.

10. The composition according to claim 1 , wherein the composition further comprises cellulose.

11. The composition according to claim 1 , wherein the composition further comprises at least a fifth filler, wherein this fifth filler is selected from the group consisting of calcium sulfate dihydrate, calcium carbonate, calcium magnesium carbonate and perlite, and/or
wherein the composition comprises of from 1.0% to 40% by weight of the total composition of at least a fifth filler.

12. The composition according to claim 11 , wherein the fifth filler is perlite and the perlite are micronized and expanded perlite with a particle size D98 of less than 200 μm, and/or
wherein the perlites have an amphiphilic coating.

13. The composition according to claim 1 , wherein the composition further comprises of from 0.1 to 1.0% by weight of the total composition of an additive consisting of a blend of alkoxylated nonionic compounds, nonionic fatty compounds, and hydrophobic silica.

14. A pasty fill and finishing material, in particular physically drying sprayable fill and finishing material, prepared from the composition according to claim 1 .

15. A method for producing a pasty fill and finishing material according to claim 14 , wherein the method is based on a two-stage process, according to which in a first step dry components are homogenized, and in a second step, the homogenized dry components are added to aqueous or water-dilutable components.

16. The composition for a pasty fill and finishing material according to claim 1 , wherein the at least one filler has a density dependent flowability (ff ρ ) value of from 6 to 8.

17. The composition for a pasty fill and finishing material according to claim 1 , wherein the at least one filler has a density dependent flowability (ff ρ ) value of from 5 to 10.

18. The composition for a pasty fill and finishing material according to claim 1 , wherein the first carbonate has a D98 value of from 80 to 100 μm and the second carbonate has a D98 value of from 150 to 170 μm and wherein the first and/or the second carbonate has/have a D50 value of from 15 to 25 μm.

19. The composition according to claim 1 , wherein the composition further comprises from 0.1 to 0.4% by weight of the total composition of an additive consisting of a blend of alkoxylated nonionic compounds, nonionic fatty compounds, and hydrophobic silica.

20. The composition according to claim 1 , wherein the first carbonate comprises calcium magnesium carbonate and the second carbonate comprises calcium carbonate.

Assignees

• Knauf Gips Kg

Inventors

• Wings Norbert
• Van Sloun Claudia
• Heinrich Elena
• Mischke Sebastian

Classifications

• C09D131/04

  Homopolymers or copolymers of vinyl acetate · CPC title

• C09D5/00

  Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes · CPC title

• C09D7/70

  characterised by shape, e.g. fibres, flakes or microspheres · CPC title

• C09D7/61

  inorganic · CPC title

• C09D7/65

  macromolecular (C09D7/41-C09D7/48 take precedence) · CPC title