# US 8,568,879 B2 · Polyolefin dispersion technology used for resin coated sand

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- Number: US 8,568,879 B2
- Document ID: US8568879B2
- Status: Granted
- Kind: B2
- Application number: 13/432,665
- Filed: 2012-03-28
- Published: 2012-07-19
- Granted: 2013-10-29
- Earliest claimed: 2006-09-11
- Assignees: Dow Global Technologies LLC
- Applicants: Loic F. Chereau; Julien H. J. M. Damen; Thomas Allgeuer
- Inventors: Loic F. Chereau; Julien H. J. M. Damen; Thomas Allgeuer
- Web page: https://patentgrep.com/patent/US8568879B2

## CPC

- C08K 9/08: Ingredients agglomerated by treatment with a binding agent
- C08J 3/212: {and solid additives}
- Y10T 428/2991: Coated
- Y10T 428/2993: Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
- Y10T 428/2995: Silane, siloxane or silicone coating
- Y10T 428/2996: Glass particles or spheres
- Y10T 428/2998: including synthetic resin or polymer
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A polymer-coated particulate material having: a particulate substrate; and an applied compound, wherein the applied compound coats at least 50% of the surface of the particulate substrate, and wherein, at the time of application, the applied compound includes a dispersion including: a thermoplastic polymer; and a stabilizing compound. In another aspect, embodiments disclosed herein relate to a method of forming a polymer-coated particulate material, the method including the steps of: incorporating a particulate substrate and a dispersion, the dispersion comprising: a thermoplastic polymer; a stabilizing compound; and a dispersion medium selected from the group consisting of an organic solvent, water, and combinations thereof; removing at least a portion of the dispersion medium.

## Claims

### Claim 1

A polymer-coated particulate material comprising: a particulate substrate; and an applied compound derived from a dispersion or emulsion, wherein the applied compound coats at least 50% of the surface of the particulate substrate, and wherein, at the time of application, the dispersion or emulsion comprises: a dispersion or emulsion medium selected from the group consisting of an organic solvent, water, and combinations thereof, a thermoplastic polymer dispersed in the dispersion or emulsion medium; and a stabilizing compound selected from the group consisting of surfactants, dispersing agents, emulsifiers, polymers different from the thermoplastic polymer, or mixtures thereof.

### Claim 2 (depends on 1)

The particulate material of claim 1, wherein the thermoplastic polymer is selected from the group consisting of: propylene-based homopolymers, copolymers, interpolymers, and multi-block interpolymers; ethylene-based homopolymers, copolymers, interpolymers, and multi-block interpolymers; and combinations thereof.

### Claim 3 (depends on 2)

The particulate material of claim 2, wherein the thermoplastic polymer is selected from the group consisting of propylene-based multi-block interpolymers, ethylene-based multi-block interpolymers and combinations thereof.

### Claim 4 (depends on 1)

The particulate material of claim 1, wherein the particulate substrate is selected from the group consisting of mineral grains, sands, and rubber particles.

### Claim 5 (depends on 1)

The particulate material of claim 1, wherein the particulate substrate is a silica-based sand.

### Claim 6 (depends on 1)

The particulate material of claim 1, wherein the dispersion is a frothed dispersion.

### Claim 7 (depends on 1)

The particulate material of claim 1, further comprising an adhesion promoter.

### Claim 8 (depends on 1)

The particulate material of claim 1, wherein the particulate material comprises the thermoplastic polymer in an amount ranging from 1 to 20 weight percent based on the weight of the particulate substrate.

### Claim 9 (depends on 1)

The particulate material of claim 1, further comprising UV inhibitors.

### Claim 10 (depends on 1)

The particulate material of claim 1, further comprising an algae inhibitor, an antimicrobiological agent, a biocide, a fungicide, or combinations thereof.

### Claim 11 (depends on 1)

The particulate material of claim 1, wherein the thermoplastic polymer is at least partially crosslinked.

### Claim 12 (depends on 1)

Artificial turf comprising the particulate material of claim 1 as infill.