Phospholipid dedusting agents for joint compounds

Patent metadata

Field	Value
Publication number	US-11040910-B2
Application number	US-201916365820-A
Country	US
Kind code	B2
Filing date	Mar 27, 2019
Priority date	Jun 6, 2018
Publication date	Jun 22, 2021
Grant date	Jun 22, 2021

Abstract

A drying-type joint compound, a setting-type joint compound, and/or a ready-mixed, setting-type joint compound can include a phospholipid dedusting agent. For example, a drying-type joint compound can include: (a) a primary filler at 50 weight percent (wt %) to 98 wt % on a dry basis, wherein the primary filler includes one of calcium carbonate, calcium sulfate dihydrate, and talc, and a mixture thereof (b) a secondary filler at up to 25 wt % on a dry basis; (c) a binder at 1 wt % to 15 wt % on a dry basis; (d) a polymer thickener at 0.05 wt % to 3 wt % on a dry basis; (e) a phospholipid dedusting agent at 0.01 wt % to 3 wt % on a dry basis; (f) an additive up to 10 wt % o on a dry basis; and (g) water at a weight ratio of water to dry components of 1:6 to 2:1.

First claim

What is claimed is:

1. A joint compound comprising in weight percent on a dry basis:
about 25% to about 98% filler, about 1% to about 45% binder, and about 0.01% to about 3% phospholipid dedusting agent, wherein the phospholipid dedusting agent comprises one or more of phosphatidylcholine, phosphatidylserine, phosphatidylinositol, phosphatidylethanolamine, and phosphatidylglycerol.

2. The joint compound of claim 1 , wherein the joint compound is a drying-type joint compound,
wherein the joint compound comprises in weight percent on a dry basis:
the filler, wherein the filler comprises:
a primary filler at about 50 weight percent (wt %) to about 98 wt % of the joint compound on a dry basis, wherein the primary filler is calcium carbonate, calcium sulfate dihydrate, or talc, or a mixture thereof, and
a secondary filler at up to about 25 wt % of the joint compound on a dry basis;

about 1 wt % to about 15 wt % the binder;
about 0.01 wt % to about 3 wt % the phospholipid dedusting agent;

wherein the joint compound further comprises in weight percent on a dry basis about 0.05 wt % to about 3 wt % a polymer thickener.

3. The joint compound of claim 1 , wherein the joint compound is a drying-type joint compound,
further comprising water;
wherein the joint compound comprises joint compound components other than the water comprising in weight percent on a dry basis:
the filler, wherein the filler comprises:
a primary filler at about 50 weight percent (wt %) to about 98 wt % of the joint compound on a dry basis, wherein the primary filler is calcium carbonate, calcium sulfate dihydrate, or talc, or a mixture thereof, and
a secondary filler at up to about 25 wt % of the joint compound on a dry basis;

about 1 wt % to about 15 wt % said binder;
about 0.01 wt % to about 3 wt % said phospholipid dedusting agent;
wherein the joint compound components other than the water further comprise in weight percent on a dry basis about 0.05 wt % to about 3 wt % a polymer thickener; and
wherein a weight ratio of the water to the joint compound components other than the water is about 1:6 to about 2:1.

4. The joint compound of claim 1 , wherein the joint compound has an absence of calcined gypsum.

5. A method comprising:
applying the joint compound of claim 1 to a surface;
drying and/or setting the joint compound; and
dry or wet sanding the joint compound after drying and/or setting.

6. A joint compound consisting essentially of in weight percent on a dry basis:
about 25% to about 98% filler,
about 1% to about 45% binder, and
about 0.01% to about 3% phospholipid dedusting agent,
wherein the phospholipid dedusting agent consists essentially of one or more phospholipids conjugated with one or more of a polyethylene glycol, a polyethylene oxide, a fluorescent dye, a chromogenic dye, a protein, a peptide, a carbohydrate, a sterol, a fatty acid, and a synthetic polymer.

7. The joint compound of claim 6 , wherein the phospholipid dedusting agent consists essentially of one or more of phosphatidylcholine, phosphatidylserine, phosphatidylinositol, phosphatidylethanolamine, and phosphatidylglycerol conjugated with one or more of polyethylene glycol, polyethylene oxide, fluorescent dye, chromogenic dye, protein, peptide, carbohydrate, sterol, fatty acid, and synthetic polymer.

8. The joint compound of claim 6 , wherein the phospholipid dedusting agent consists essentially of one or more phospholipids conjugated with one or more of polyethylene oxide, fluorescent dye, chromogenic dye, protein, peptide, carbohydrate, sterol, fatty acid, and synthetic polymer.

9. The joint compound of claim 6 , wherein there is an absence of surfactant other than the phospholipid dedusting agent.

10. A method comprising:
applying the joint compound of claim 6 to a surface;
drying and/or setting the joint compound; and
dry or wet sanding the joint compound after drying and/or setting.

11. A setting-type joint compound comprising in weight percent on a dry basis:
a calcium sulfate hem ihydrate at about 20 weight percent (wt %) to about 99 wt % of the setting-type joint compound on a dry basis;
up to about 30% filler,
up to about 8 wt % the binder;
up to about 2 wt % the polymer thickener; and
about 0.01% to about 3% phospholipid dedusting agent, wherein the phospholipid dedusting agent comprises one or more of phosphatidylcholine, phosphatidylserine, phosphatidylinositol, phosphatidylethanolamine, and phosphatidylglycerol.

12. The setting-type joint compound of claim 11 ,
which comprises in weight percent on a dry basis:
about 20 weight percent (wt %) to about 99 wt % the calcium sulfate hemihydrate;
up to about 30 wt % the filler;
about 0.5 wt % to about 8 wt % the binder;
about 0.01 wt % to about 3 wt % the phospholipid dedusting agent; and

wherein the joint compound further comprises in weight percent on a dry basis:
about 0 .05 wt % to about 2 wt % polymer thickener.

13. The setting-type joint compound of claim 11 ,
further comprising water and a set retarder, and
wherein the joint compound comprises joint compound components other than the water in weight percent (wt %) on a dry basis comprising:
about 20 wt % to about 99 wt % calcium sulfate hemihydrate;
up to about 30 wt % the filler;
up to about 8 wt % the binder;
up to about 2 wt % the polymer thickener;
about 0.01 wt % to about 3 wt % the phospholipid dedusting agent; and
about 0.001 wt % to about 2 wt % the set retarder;

wherein a weight ratio of the water to joint compound components other than water is about 1:6 to about 2:1.

14. A method comprising:
applying the setting-type joint compound of claim 11 to a surface;
drying and/or setting the setting-type joint compound; and
dry or wet sanding the setting-type joint compound after drying and/or setting.

15. A setting-type joint compound consisting essentially of in weight percent on a dry basis:
a calcium sulfate hemihydrate at about 20 weight percent (wt %) to about 99 wt % of the setting-type joint compound on a dry basis;
up to about 30% filler,
up to about 8 wt % the binder;
up to about 2 wt % the polymer thickener; and
about 0.01% to about 3% phospholipid dedusting agent, wherein the phospholipid dedusting agent consists essentially of one or more phospholipids conjugated with one or more of a polyethylene glycol, a polyethylene oxide, a fluorescent dye, a chromogenic dye, a protein, a peptide, a carbohydrate, a sterol, a fatty acid, and a synthetic polymer.

16. The setting-type joint compound of claim 15 , wherein the phospholipid dedusting agent consists essentially of one or more of phosphatidylcholine, phosphatidylserine, phosphatidylinositol, phosphatidylethanolamine, and phosphatidylglycerol conjugated with one or more of polyethylene glycol, polyethylene oxide, fluorescent dye, chromogenic dye, protein, peptide, carbohydrate, sterol, fatty acid, and synthetic polymer.

17. The setting-type joint compound of claim 15 having an absence of surfactant other than the phospholipid dedusting agent.

18. The setting-type joint compound of claim 15 , wherein the phospholipid dedusting agent consists essentially of one or more phospholipids conjugated with one or more of polyethylene oxide, fluorescent dye, chromogenic dye, protein, peptide, carbohydrate, sterol, fatty acid, and synthetic polymer.

19. A method comprising:
applying the setting-type joint compound of claim 15 to a surface;
drying and/or setting the setting-type joint compound; and
dry or wet sanding the setting-ty

Assignees

• United States Gypsum Co

Inventors

• Donovan Alexander J

Classifications

• C04B14/28

  of calcium · CPC title

• C04B14/10

  Clay {(sepiolite C04B14/042; grog C04B18/025)} · CPC title

• C04B2111/00689

  of the setting type · CPC title

• C04B28/14

  containing calcium sulfate cements {(gypsum-paper plates E04C)} · CPC title

• C04B24/383

  Cellulose or derivatives thereof · CPC title