Coating composition, granules coated with same, and method of reducing dust generation
First Claim
1. A coatable composition suitable for reducing dust generation during processing of granular materials, the composition consisting essentially of:
- a) an organic oil;
b) an optional adhesion agent; and
c) a tackifier consisting essentially of an organic material having a glass transition temperature of no less than about 120°
C. and a naphthenic oil present in sufficient amount to give the tackifier a kinematic viscosity ranging from about 3,000 to about 5,000 centistokes at 100°
C.;
said organic oil being compatible with the tackifier and the optional adhesion agent.
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Abstract
A coatable composition suitable for reducing dust generation during processing of granular materials consists essentially of a tackifier, an organic oil, and an adhesion agent, the tackifier consisting essentially of an organic material having a glass transition temperature of no less than about 120° C. and a diluent present in sufficient amount to give the tackifier a kinematic viscosity ranging from about 3,000 to about 5,000 centistokes at 100° C. The tackifier is preferably present in the composition at about 0.5 to about 2.0 weight percent of the total weight of the composition, and the adhesion agent is preferably present at about 0.5 to about 5.0 weight percent of the total weight of the composition, with the balance being organic oil. Granular materials having coatings of the composition (with or without the adhesion agent) are presented, as well as methods of reducing dust generation during processing and/or transport of granular materials and methods of making organic oil-coated granular materials.
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Citations
16 Claims
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1. A coatable composition suitable for reducing dust generation during processing of granular materials, the composition consisting essentially of:
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a) an organic oil; b) an optional adhesion agent; and c) a tackifier consisting essentially of an organic material having a glass transition temperature of no less than about 120°
C. and a naphthenic oil present in sufficient amount to give the tackifier a kinematic viscosity ranging from about 3,000 to about 5,000 centistokes at 100°
C.;
said organic oil being compatible with the tackifier and the optional adhesion agent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of reducing dust generation during processing of granular materials, said granular materials comprising base granules, the method comprising applying to the base granules a coatable composition, wherein the coatable composition consists essentially of:
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a) an organic oil; b) an optional adhesion agent; and c) a tackifier consisting essentially of an organic material having a glass transition temperature of no less than about 120°
C. and a napthenic oil present in sufficient amount to give the tackifier a kinematic viscosity ranging from about 3,000 to about 5,000 centistokes at 100°
C.;
said organic oil being compatible with the base granules, the tackifier, and the optional adhesion agent. - View Dependent Claims (12, 13, 14)
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15. A method of making organic oil-coated granular materials comprising the steps of:
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a) providing at least one base granule; b) coating the at least one base granule with a coatable composition in a coating weight ranging from about 0.5 to about 10 grams per kilogram of base granules, wherein the coatable composition consists essentially of; (i) an organic oil; (ii) an optional adhesion agent; and (iii) a tackifier consisting essentially of an organic material having a glass transition temperature of no less than about 120°
C. and a naphthenic oil present in sufficient amount to give the tackifier a kinematic viscosity ranging from about 3,000 to about 5,000 centistokes at 100°
C.;
said organic oil being compatible with the base granules, the tackifier, and the optional adhesion agent. - View Dependent Claims (16)
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Specification