Waste paint solidifier

Patent metadata

Field	Value
Publication number	US-9375701-B2
Application number	US-201414294341-A
Country	US
Kind code	B2
Filing date	Jun 3, 2014
Priority date	Jun 3, 2014
Publication date	Jun 28, 2016
Grant date	Jun 28, 2016

Abstract

Compositions with sodium carboxymethylcellulose and hydroxyethyl cellulose are provided for environmentally safe disposal of water-based latex and acrylic formulations. Improved methods for environmentally safe disposal of water-based latex and acrylic formulations are provided as well.

First claim

What is claimed is:

1. A waste paint solidifying composition, the composition comprising sodium carboxymethylcellulose and hydroxyethyl cellulose.

2. The composition of claim 1 which further comprises cellulosic fibers, an absorbent or a combination thereof.

3. The composition of claim 1 , wherein the composition comprises 30-50% sodium carboxymethylcellulose and 10-30% hydroxyethyl cellulose.

4. The composition of claim 2 , wherein the cellulosic fibers are selected from the group consisting of straw, rice hulks, wood chips, corn cobs and any combination thereof.

5. The composition of claim 2 , wherein the absorbent is selected from the group consisting of sand, attapulgite clay and vermiculite clay.

6. The composition of claim 1 , wherein the composition further comprises cellulosic fibers and attapulgite clay.

7. The composition of claim 6 , wherein the cellulosic fibers are used in the amount from 10% to 30%.

8. The composition of claim 6 , wherein the attapulgite clay is used in the amount from 10% to 30%.

9. The composition of claim 1 , wherein the composition comprises 40% sodium carboxymethylcellulose and 20% hydroxyethyl cellulose.

10. A method for disposing of a water-based paint product, the method comprising:
mixing the water-based paint product with a waste paint solidifying composition comprising sodium carboxymethylcellulose and hydroxyethyl cellulose; and
allowing the mixture to absorb and gel-solidify the water-based paint product.

11. The method of claim 10 , wherein the water-based paint product is selected from the group consisting of latex paint products, polyacrylic paint products and combinations therefore.

12. The method of claim 10 , wherein the water-based pant product is selected from the group consisting of joint compounds, latex paints, polyacrylic paints, latex coatings, polyacrylic coatings and textures.

13. The method of claim 10 , wherein the step of absorbing and gel-solidifying is performed in less than 1 hour.

14. The method of claim 10 , wherein the waste paint solidifying composition is used in the amount 1-10% by weight of the water-based paint product.

15. The method of claim 10 , wherein the waste paint solidifying composition comprises 30-50% sodium carboxymethylcellulose and 10-30% hydroxyethyl cellulose.

16. The method of claim 10 , wherein the waste paint solidifying composition further comprises cellulosic fibers and attapulgite clay.

17. The method of claim 16 , wherein the cellulosic fibers are used in the amount from 10% to 30% and the attapulgite clay is used in the amount from 10% to 30%.

Assignees

• United States Gypsum Co
• Us Gypsum Corp

Inventors

• Grussing Jeffrey F
• Bernicke-Grussing Nancy L

Classifications

• B09B3/21

  using organic binders or matrix · CPC title

• C02F11/14

  with addition of chemical agents · CPC title

• C08K3/346

  Clay · CPC title

• B01J20/24 Primary

  Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives · CPC title

• B01J20/103

  comprising silica · CPC title