Composition for dust control

Patent metadata

Field	Value
Publication number	US-10059635-B2
Application number	US-201615141404-A
Country	US
Kind code	B2
Filing date	Apr 28, 2016
Priority date	Nov 25, 2013
Publication date	Aug 28, 2018
Grant date	Aug 28, 2018

Abstract

The invention is directed towards methods and compositions for preventing dusting problems in mineral supplement. The method involves treating the mineral supplement or a dust releasing material with a composition comprising polymerized organic acid.

First claim

What is claimed is:

1. A composition comprising
a mass prone to releasing dust, the mass comprising mineral supplement, mined materials, synthesized dry materials, fertilizer, coal, wood chips, agricultural products, fruit, aggregates, fine materials, potash, phosphate, road dust, or combinations thereof; and
a copolymer comprising polymerized organic acid repeat units and polymerized glycerol repeat units.

2. The composition of claim 1 wherein the organic acid comprises an hydroxy fatty acid.

3. The composition of claim 2 wherein the hydroxyacid is selected from the group consisting of ricinoleic acid, 12-hydroxystearic acid, and combinations thereof.

4. The composition of claim 1 wherein the copolymer comprises repeating units selected from the group consisting of monoglycerols, diglycerols, triglycerols, and any combination thereof.

5. The composition of claim 1 wherein the copolymer further comprises alkoxy groups or repeating units thereof.

6. The composition of claim 1 wherein the copolymer is a block copolymer comprising a first chain and a second chain.

7. The composition of claim 6 wherein the first chain consists essentially of organic acid repeating units and the second chain consists essentially of glycerol repeating units.

8. The composition of claim 6 wherein the first chain and the second chain are linked by an ester bond.

9. The composition of claim 6 wherein the first chain consists essentially of ricinoleic acid.

10. The composition of claim 7 wherein the first chain has at least two organic acid repeating units.

11. The composition of claim 10 wherein the copolymer has at least 100 organic acid repeating units.

12. The composition of claim 1 wherein the composition is characterized by a permanent reduction in released dust compared to the mass prone to releasing dust.

13. The composition of claim 12 wherein the reduction by including the copolymer derived from an organic acid and glycerol is more effective than by including a comparable amount of petroleum.

14. The composition of claim 1 wherein the weight ratio of the mass prone to releasing dust to the copolymer is about 500:1.

Assignees

• Ecolab Usa Inc

Inventors

• Hay Daniel N T
• Dimas Peter A

Classifications

• C05G3/20

  for preventing the fertilisers being reduced to powder; Anti-dusting additives · CPC title

• B01J2/30 Primary

  using agents to prevent the granules sticking together; Rendering particulate materials free flowing in general, e.g. making them hydrophobic · CPC title

• C05B7/00

  Fertilisers based essentially on alkali or ammonium orthophosphates (C05B11/00 takes precedence) · CPC title

• C09K3/22

  for dust-laying or dust-absorbing · CPC title

• C05G3/0088 Primary

  Chemistry & Metallurgy · mapped topic