Vesicle dedusting agents for joint compounds

Patent metadata

Field	Value
Publication number	US-10800706-B2
Application number	US-201916365966-A
Country	US
Kind code	B2
Filing date	Mar 27, 2019
Priority date	Apr 23, 2018
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

A drying-type joint compound can comprise: (a) a primary filler at about 50 weight percent (wt %) to about 98 wt % on a dry basis, wherein the primary filler includes one member selected from the group of calcium carbonate, calcium sulfate dihydrate, and talc, and a mixture thereof; (b) a secondary filler at up to about 25 wt % on a dry basis; (c) a binder at about 1 wt % to about 15 wt % on a dry basis; (d) a polymer thickener at about 0.05 wt % to about 3 wt % on a dry basis; (e) a vesicle dedusting agent at about 0.01 wt % to about 10 wt % on a dry basis, wherein the vesicle dedusting agent comprises vesicles; and (f) an additive up to about 10 wt % o on a dry basis; and (g) water at a ratio of water to dry components of about 1:6 to about 3:1.

First claim

What is claimed is:

1. A joint compound selected from the group consisting of a drying-type joint compound, a setting-type joint compound, and a ready-mixed, setting-type joint compound,
wherein the drying-type joint compound comprises:
a primary filler at about 50 weight percent (wt %) to about 98 wt % of the drying-type joint compound on a dry basis, wherein the primary filler comprises one selected from the group consisting of calcium carbonate, calcium sulfate dihydrate, and talc, and a mixture thereof;
a secondary filler at up to about 25 wt % of the drying-type joint compound on a dry basis;
a binder at about 1 wt % to about 15 wt % of the drying-type joint compound on a dry basis;
a polymer thickener at about 0.05 wt % to about 3 wt % of the drying-type joint compound on a dry basis;
a vesicle dedusting agent at about 0.01 wt % to about 10 wt % of the drying-type joint compound on a dry basis, wherein the vesicle dedusting agent comprises vesicles;
an additive up to about 10 wt % of the drying-type joint compound on a dry basis; and
water at a ratio of water to dry components of about 1:6 to about 3:1;

wherein the setting-type joint compound comprises:
a calcium sulfate hemihydrate at about 20 weight percent (wt %) to about 99 wt % of the setting-type joint compound on a dry basis;
a filler at up to about 30 wt % of the setting-type joint compound on a dry basis;
a binder at about 0.5 wt % to about 8 wt % of the setting-type joint compound on a dry basis;
a polymer thickener at about 0.05 wt % to about 2 wt % of the setting-type joint compound on a dry basis;
a vesicle dedusting agent at about 0.01 wt % to about 10 wt % of the setting-type joint compound on a dry basis, wherein the vesicle dedusting agent comprises vesicles; and
an additive up to about 10 wt % of the setting-type joint compound on a dry basis; and

wherein the ready-mixed, setting-type joint compound comprises:
a calcium sulfate hemihydrate at about 20 weight percent (wt %) to about 99 wt % of the ready-mixed, setting-type joint compound on a dry basis;
a filler at up to about 30 wt % of the ready-mixed, setting-type joint compound on a dry basis;
a set retarder at about 0.001 wt % to about 2 wt % of the ready-mixed, setting-type joint compound on a dry basis
a binder at up to about 8 wt % of the ready-mixed, setting-type joint compound on a dry basis;
a polymer thickener at up to about 2 wt % of the ready-mixed, setting-type joint compound on a dry basis;
a vesicle dedusting agent at about 0.01 wt % to about 10 wt % of the ready-mixed, setting-type joint compound on a dry basis, wherein the vesicle dedusting agent comprises vesicles;
an additive up to about 10 wt % of the ready-mixed, setting-type joint compound on a dry basis; and
water at a ratio of water to dry components of about 1:6 to about 3:1.

2. The joint compound of claim 1 , wherein the vesicles comprise unilamellar vesicles.

3. The joint compound of claim 2 , wherein the unilamellar vesicles have an average hydrodynamic diameter of about 50 nm up to 5000 nm and a polydispersity index of about 0.2 to about 0.5.

4. The joint compound of claim 2 , wherein the unilamellar vesicles have an average hydrodynamic diameter of about 50 nm up to 500 nm and a polydispersity index of about 0.2 to about 0.5.

5. The joint compound of claim 1 , wherein the vesicles comprise multilamellar vesicles.

6. The joint compound of claim 5 , wherein the multilamellar vesicles have an average hydrodynamic diameter of about 100 nm up to 5 microns and a polydispersity index of about 0.2 to about 0.5.

7. The joint compound of claim 1 , wherein the vesicles comprise lecithin.

8. The joint compound of claim 1 , wherein the vesicles comprise a polyethylene glycol phospholipid derivative and methoxypoly(ethylene glycol)-phosphatidylethanolamine (mPEG-PE).

9. The joint compound of claim 8 , wherein a weight percentage on a dry basis of the PEG in the polyethylene glycol phospholipid derivative and the mPEG-PE is cumulatively about 0.1 mol % to about 10 mol % based on a total vesicle composition.

10. The joint compound of claim 1 , wherein the vesicles comprise polyethylene oxide-block-poly(ε-caprolactone) and/or polyethylene oxide-block-polylactide.

11. The joint compound of claim 1 , wherein the joint compound is the drying-type joint compound and comprises:
(a) the primary filler at about 65 wt % to about 93 wt % of the drying-type joint compound on a dry basis, wherein the primary filler is calcium carbonate;
(b) the secondary filler about 3 wt % to about 25 wt % of the drying-type joint compound on a dry basis;
(c) the binder at about 1 wt % to about 10 wt % of the drying-type joint compound on a dry basis;
(d) the polymer thickener at about 0.1 wt % to about 2 wt % of the drying-type joint compound on a dry basis;
(e) the vesicle dedusting agent at about 0.1 wt % to about 3 wt % of the drying-type joint compound on a dry basis;
(f) the additive about 0.01 wt % to about 10 wt % of the drying-type joint compound on a dry basis; and
(g) the water at the ratio of water to dry components of about 1:3 to about 1:1.

12. The joint compound of claim 1 , wherein the joint compound is the drying-type joint compound and comprises:
(a) the primary filler at about 50 wt % to about 93 wt % of the drying-type joint compound on a dry basis, wherein the primary filler is calcium sulfate dihydrate;
(b) the secondary filler about 3 wt % to about 25 wt % of the drying-type joint compound on a dry basis;
(c) the binder at about 1 wt % to about 10 wt % of the drying-type joint compound on a dry basis;
(d) the polymer thickener at about 0.1 wt % to about 2 wt % of the drying-type joint compound on a dry basis;
(e) the vesicle dedusting agent at about 0.1 wt % to about 3 wt % of the drying-type joint compound on a dry basis; and
(f) the additive about 0.01 wt % to about 10 wt % of the drying-type joint compound on a dry basis; and
(g) the water at the ratio of water to dry components of about 1:3 to about 1:1.

13. The joint compound of claim 1 , wherein the joint compound is the setting-type joint compound and comprises:
(a) the calcium sulfate hemihydrate at about 60 wt % to about 85 wt % of the setting-type joint compound on a dry basis;
(b) the secondary filler about 5 wt % to about 30 wt % of the setting-type joint compound on a dry basis;
(c) the binder at about 1 wt % to about 4 wt % of the setting-type joint compound on a dry basis;
(d) the polymer thickener at about 0.1 wt % to about 1 wt % of the setting-type joint compound on a dry basis;
(e) the vesicle dedusting agent at about 0.1 wt % to about 3 wt % of the setting-type joint compound on a dry basis; and
(f) the additive about 0.1 wt % to about 5 wt % of the setting-type joint compound on a dry basis.

14. The joint compound of claim 1 , wherein the joint compound is the ready-mixed, setting-type joint compound and comprises:
(a) the calcium sulfate hemihydrate at about 60 wt % to about 99 wt % of the ready-mixed, setting-type joint compound on a dry basis;
(b) the filler at about 5 wt % to about 30 wt % of the ready-mixed, setting-type joint compound on a dry basis;
(c) the set retarder at about 0.1 wt % to about 1 wt % of the ready-mixed, setting-type joint compound on a dry basis
(d) the binder at up to about 4 wt % of the ready-mixed, setting-type joint compound on a dry basis;
(e) the polymer thickener at about 0.1 wt % to about 2 wt % of the ready-mixed, setting-type joint compound on a dry basis;
(f) the vesicle dedusting agent at about 0.1 wt % to about 3 wt % of the ready-mixed, setting-type joint compound on a

Assignees

• United States Gypsum Co

Inventors

• Donovan Alexander J
• Immordino Salvatore C

Classifications

• C04B26/06

  Acrylates · CPC title

• C04B26/28

  Polysaccharides or derivatives thereof · CPC title

• C04B16/12

  characterised by the shape (fibrous macromolecular compounds C04B16/06; porous macromolecular compounds C04B16/08 ){, e.g. perforated strips} · CPC title

• C04B2111/00689

  of the setting type · CPC title

• C04B24/383

  Cellulose or derivatives thereof · CPC title