Composition for a very durable pasty fill and finishing material, pasty fill and finishing material, and method for producing it

Patent metadata

Field	Value
Publication number	US-12448332-B2
Application number	US-201817289896-A
Country	US
Kind code	B2
Filing date	Nov 6, 2018
Priority date	Nov 6, 2018
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

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 binding agent comprises an organic polymer and hydroxyethyl cellulose, and wherein the at least one filler is a lamellar silicate material.

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, water, and additives, wherein the at least one binding agent comprises an organic polymer stabilized with hydroxyethyl cellulose, and wherein the at least one filler comprises a first filler and a second filler, wherein the first filler is sepiolite, wherein the composition comprises sepiolite in an amount from 0.05 to 0.20% by weight of the composition, wherein the composition comprises the second filler in an amount from 60 to 65% by weight of the composition, and wherein the composition comprises the water in an amount from 25 to 30% by weight of the composition.

2. The composition according to claim 1 , wherein the organic polymer is selected from a group consisting of poly(ethylene-vinyl acetate), polyvinyl acetate, polyacrylate, or any combinations thereof.

3. The composition according to claim 1 , wherein the composition comprises the at least one binding agent in an amount of 0.1 to 20% by weight of the composition.

4. The composition according to claim 1 , wherein the at least one binding agent comprises the hydroxyethyl cellulose in an amount of 0.001 to 0.20% by weight of the composition.

5. The composition according to claim 1 , wherein the additives comprise cellulose, modified cellulose, or a combination thereof.

6. The composition according to claim 5 , wherein the composition comprises the cellulose in an amount of 0.1 to 2.0% by weight of the composition.

7. The composition according to claim 5 , wherein the additives comprise hydroxypropyl methyl cellulose in an amount of 0.01 to 0.4% by weight of the composition and hydroxyethyl cellulose in an amount of 0.35 to 0.6% by weight of the composition.

8. The composition according to claim 1 , wherein the second filler is selected from the group consisting of calcium sulfate dihydrate, calcium carbonate, calcium magnesium carbonate and any combination thereof.

9. The composition according to claim 8 , wherein the composition comprises at least a third filler in an amount from 0.5 to 2.0% by weight of the composition, wherein the third filler is a mica mineral.

10. The composition according to claim 1 , wherein the additives comprise biocides in an amount from 0.1 to 0.4% by weight of the composition.

11. The composition according to claim 1 , wherein the organic polymer comprises poly(ethylene-vinyl acetate).

12. The composition according to claim 1 , wherein the composition comprises the at least one binding agent in an amount of 3 to 15% by weight of the composition.

13. The composition according to claim 1 , wherein the additives comprise 2-hydroxyethyl methyl cellulose, hydroxypropyl cellulose, ethylcellulose, methylcellulose, methyl ethyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, or any combinations thereof.

14. The composition according to claim 1 , wherein the composition comprises the organic polymer stabilized with hydroxyethyl cellulose in an amount of 5.0 to 8.0% by weight of the composition.

15. The composition according to claim 1 , wherein the at least one binding agent comprises the hydroxyethyl cellulose in an amount of 0.0015 to 0.09% by weight of the composition.

16. The composition according to claim 9 , wherein the third filler is muscovite.

17. The composition according to claim 1 , wherein the second filler is calcium magnesium carbonate.

18. The composition according to claim 1 , wherein the second filler is calcium magnesium carbonate, wherein the organic polymer stabilized with hydroxyethyl cellulose is a poly(ethylene-vinyl acetate) dispersion stabilized with hydroxyethyl cellulose, wherein the composition comprises the organic polymer stabilized with hydroxyethyl cellulose in an amount from 5 to 8% by weight of the composition, wherein the additives are hydroxypropyl methyl cellulose in an amount of 0.01 to 0.4% by weight of the composition, hydroxyethyl cellulose in an amount of 0.35 to 0.6% by weight of the composition, and biocides in an amount of 0.1 to 0.4% by weight of the composition, and wherein the composition further comprises a third filler, wherein the third filler is muscovite mica, and wherein the composition comprises the third filler in an amount from 0.5 to 2.0% by weight of the composition.

Assignees

• Knauf Gips Kg

Inventors

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

Classifications

• C04B26/285

  Cellulose or derivatives thereof (C04B26/24 takes precedence) · CPC title

• C04B26/06 Primary

  Acrylates · CPC title

• C04B2103/67

  Biocides · CPC title

• C04B14/28

  of calcium · CPC title

• C04B14/104

  Bentonite, e.g. montmorillonite · CPC title