# US 10,479,939 B2 · Soil erosion prevention agent

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- Number: US 10,479,939 B2
- Document ID: US10479939B2
- Status: Granted
- Kind: B2
- Application number: 15/118,395
- Filed: 2015-02-04
- Published: 2017-06-22
- Granted: 2019-11-19
- Earliest claimed: 2014-02-12
- Assignees: Denka Company Limited
- Applicants: Denka Company Limited
- Inventors: Koichi Fukuda; Hironori Konishi; Kazuhiro Kote
- Web page: https://patentgrep.com/patent/US10479939B2

## CPC

- C09K 17/20: Vinyl polymers
- C08F 218/08: Vinyl acetate
- C09K 17/16: applied in a physical form other than a solution or a grout, e.g. as platelets or granules
- E02D 17/00: Excavations; Bordering of excavations; Making embankments (soil-shifting apparatus E02F; earth drilling E21)
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- E02D: FOUNDATIONS; EXCAVATIONS; EMBANKMENTS (specially adapted for hydraulic engineering E02B); UNDERGROUND OR UNDERWATER STRUCTURES {(tunnels, tunnelling, mining E21)}

## Abstract

Provided is a soil erosion prevention agent which can suppress the amount of resin used without decreasing soil erosion prevention effect. A soil erosion prevention agent containing a water-borne resin emulsion, wherein: the emulsion has a solid content of 30 to 70 mass %; and the emulsion has a viscosity of 50 mPa·s or lower measured at 30° C. when a water content of the emulsion is adjusted so that the solid content of the emulsion is 40 mass %, is provided.

## Claims

### Claim 1

A soil erosion prevention composition comprising a spraying material and a soil erosion prevention agent, wherein:
the spraying material comprises soil; and
the soil erosion prevention agent comprises:
a water-borne resin emulsion, wherein:
the emulsion is an ethylene-vinyl acetate copolymer emulsion;
the emulsion has a solid content of 35 to 55 mass %; and
the emulsion has a viscosity of 50 mPa·s or lower measured at 30° C. when a water content of the emulsion is adjusted so that the solid content of the emulsion is 40 mass %.

### Claim 2 (depends on 1)

The soil erosion prevention composition of claim 1, wherein the emulsion has a viscosity of 1000 mPa·s or lower measured at 30° C.