Sprayable composition

• US 5,082,500 A
• Filed: 01/10/1991
• Issued: 01/21/1992
• Est. Priority Date: 05/10/1989
• Status: Expired due to Term

• Current Assignee: New Waste Concepts, Inc.
• Original Assignee: Newastecon, Inc.
• Inventors: Hull, John, Nachtman, Thomas, O'Shea, Patrick
• Primary Examiner(s): Bell, Mark
• Assistant Examiner(s): JONES, DEBORAH D
• Application Number:
  US07/639,285
• Time in Patent Office: 376 Days
• Field of Search: 106/203, 106/204, 106/170, 106/900, 52/3, 47/9
• US Class Current: 106/162.5
• CPC Class Codes: A01G 2013/004 Liquid mulch
• CPC Class Codes: B01F 25/53 in which the mixture is discharged from and reintroduced into a receptacle through a recirculation tube, into which an additional component is introduced
• CPC Class Codes: B09B 1/004 Covering of dumping sites
• CPC Class Codes: C08L 2666/54 Inorganic substances
• CPC Class Codes: C09D 101/284 with hydroxylated hydrocarbon radicals
• CPC Class Codes: C09D 5/021 Aerosols aerosol compositions C09K3/30
• CPC Class Codes: C09K 17/40 containing mixtures of inorganic and organic compounds
• CPC Class Codes: C09K 17/52 Mulches
• CPC Class Codes: C09K 3/18 for application to surfaces to minimize adherence of ice, mist or water thereto rendering particulate materials free flowing, in general, e.g. making them hydrophobic B01J2/30; Thawing or antifreeze materials for application to surfaces used in liquids for heat-transfer, heat-exchange or heat-storage or for the production of heat or cold other than by combustion, e.g. radiator liquids, C09K5/00
• CPC Class Codes: Y02A 40/28 specially adapted for farming
• CPC Class Codes: Y02W 30/30 Landfill technologies aiming to mitigate methane emissions

Abstract

A sprayable composition and a method of protecting material with the composition is disclosed. The composition comprises a polymer such as hydroxyethyl cellulose, clay, and water to provide a cover layer which, after spraying, is tough, flexible and water-repellent. Other materials such as shredded paper and gypsum can be used in the cover layer. The composition is effective as a cover layer over material such as soil, refuse at a dump site, or grain in a stockpile.

Claims

1. A sprayable composition for forming a cover layer over a selected material, the composition having protective layer forming ingredients, in approximate pounds, consisting essentially of:

(a) 5 to 50 pounds of a water soluble cellulosic polymer that, after spraying, becomes water repellent;

(b) 25 to 200 pounds of a clay;

(c) 10 to 100 pounds of fibrous material; and

(d) 2000 to 8000 pounds of water as a carrier for the polymer, clay, and the fibrous material, the composition, after spraying, becoming water-resistant, tough and flexible.

2. A composition as defined in claim 1 in which the composition includes a surfactant.

3. A composition as defined in claim 1 in which the composition includes gypsum.

4. A composition as defined in claim 1 in which the composition includes a glue.

5. A composition as defined in claim 4 wherein the glue includes a cellulosic polymer.

6. A composition as defined in claim 1 in which the composition includes borax.

7. A composition as defined in claim 1 in which the composition includes a dye.

8. A composition as defined in claim 1 in which the composition includes a mint oil.

9. A composition as defined in claim 1 in which the following ingredients are present in approximate pounds:

space="preserve" listing-type="tabular">______________________________________ Ingredients Pounds ______________________________________ Cellulosic Polymer 15-25 Bentonite 80-120 Shredded Paper 25-75 Water 4500-6500. ______________________________________

10. A composition as defined in claim 1 in which the following ingredients are present in approximate pounds:

space="preserve" listing-type="tabular">______________________________________ Ingredients Pounds ______________________________________ Cellulosic Polymer 20 Bentonite 100 Shredded Paper 50 Water 4800-5800. ______________________________________

11. A composition as defined in claim 1 wherein the fibrous material is shredded paper.

12. A composition as defined in claim 1 wherein the fibrous material is wood pulp.

13. A composition as defined in claim 1 wherein the clay is bentonite.

14. A composition as defined in claim 1 in which the polymer is hydroxyetheyl cellulose having a viscosity of about 100 to 5000 (Brookfield--#3 spindle).

15. A composition as defined in claim 1 wherein the fibrous material is cotton linters.

16. A composition as defined in claim 1 wherein the carrier water is an aqueous leachate from a disposable site.

17. A composition as defined in claim 1 in which the following additional ingredients are present in approximate pounds:

space="preserve" listing-type="tabular">______________________________________ Ingredients Pounds ______________________________________ Surfactant 5 to 50 Adhesion agent 5 to 20 Gypsum 5 to 100. ______________________________________

18. A sprayable composition for forming a protective cover layer over material, the composition having protective layer forming ingredients, in approximate % by weight, consisting essentially of:

(a) about 0.3 to 1.8% of a nonionic water soluble polymer of cellulose that is hydroxyethyl cellulose having a viscosity of about 100 to 500 (Brookfield--#3 spindle);

(b) about 2 to 6% of bentonite;

(c) about 2 to 4% of cellulosic fibrous material, the average fiber length being less than about 1/2 inch and the diameter being about less than about 1/4 inch;

(d) about 0.5 to 15.0% of gypsum; and

(e) about 80 to 95% of water.

19. A composition as defined in claim 18 in which a dye is present.

20. A composition as defined in claim 18 in which borax is present.

21. A composition as defined in claim 18 in which the cellulosic polymer has a viscosity of about 500 to 2000.

22. A composition as defined in claim 18 in which a surfactant is present.

23. A composition as defined in claim 18 wherein the fibrous material includes shredded paper.

24. A composition as defined in claim 18 wherein the fibrous material includes wood pulp.

25. A composition as defined in claim 18 in which mint oil is present.

26. A composition as defined in claim 18 wherein the water is at least partially provided by leachate from a disposal site.

27. A sprayable composition having protective layer forming ingredients, in approximate percent by weight, consisting essentially of:

space="preserve" listing-type="tabular">______________________________________ Ingredient Percent ______________________________________ Cellulosic Polymer 0.68-0.77 Bentonite 2.32-5.41 Gypsum 0.47-1.10 Dye less than 0.01 Surfactant less than 0.01 Paper 1.00-2.00 Wood 0.25-1.00 Water 80.00-95.000. ______________________________________

28. A method for forming a cover layer over material in a dumpsite or stockpile, the method comprising:

(A) mixing protective layer forming ingredients, in aproximate pounds, consisting essentially of;

(a) 5 to 50 pounds of water soluble cellulosic polymer;

(b) 25 to 200 pounds of a clay;

(c) 10 to 100 pounds of fibrous material; and

(d) 2000 to 8000 pounds of water, to form a composition;

(B) spraying the composition at ambient temperature over the material to form a layer of thickness sufficient to cover and protect the top of the material for a period of time; and

(C) allowing the sprayed composition to set up to provide a water-repellent, tough and flexible layer.

29. The method according to claim 28 wherein the water is an aqueous leachate collected at the dump site.

30. A method of using a sprayable composition having protective cover forming ingredients for forming a cover layer over a selected material, the method comprising:

(A) mixing the cover forming ingredients, in approximate pounds, consisting essentially of;

(a) 5 to 50 pounds of water soluble cellulosic polymer;

(b) 25 to 200 pounds of clay;

(c) 10 to 100 pounds of fibrous material; and

(d) 2000 to 8000 pounds of water; and

(B) spraying the composition to form a water-resistant and flexible layer over the material.

31. The method according to claim 30 wherein the selected material is refuse at a disposal site.

32. The method according to claim 30 wherein the selected material is soil.

33. A cover layer product produced by the method of claim 30.

34. A cover layer product as defined in claim 33 in which the layer thickness is about 1/16 inch to 3 inches.