# US 10,118,859 B2 · Low water content plastic composition comprising hydraulic cement and method for manufacturing same

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- Number: US 10,118,859 B2
- Document ID: US10118859B2
- Status: Granted
- Kind: B2
- Application number: 15/326,209
- Filed: 2015-07-20
- Published: 2017-07-13
- Granted: 2018-11-06
- Earliest claimed: 2014-07-25
- Assignees: Idin Co., Ltd.
- Applicants: Idin Co., Ltd.
- Inventors: Ji-Su Yu
- Web page: https://patentgrep.com/patent/US10118859B2

## CPC

- C04B 26/16: Polyurethanes
- C04B 28/02: containing hydraulic cements other than calcium sulfates
- C04B 28/04: Portland cements
- C04B 28/082: {Steelmaking slags; Converter slags}
- C04B 38/10: by using foaming agents (C04B38/02 takes precedence){or by using mechanical means, e.g. adding preformed foam}
- C04B 38/103: {the foaming being obtained by the introduction of a gas other than untreated air, e.g. nitrogen}
- C04B 2111/40: Porous or lightweight materials
- C04B 2201/50: for the mechanical strength
- C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE

## Abstract

The present invention relates to a low water content plastic composition comprising hydraulic cement and a method for manufacturing the same. The present invention provides a low water content plastic composition comprising hydraulic cement and a method for manufacturing the same, the composition being characterized by losing flowability and having plasticity since from a flowable, uniform mixture state of hydraulic cement and water with polyol and isocyanate compounds which are raw materials for forming foamed polyurethane, part of the water used in the mixture is separated and removed due to foaming in the course of formation of the foamed polyurethane.

## Claims

### Claim 1

A method for manufacturing a plastic composition with a low water content comprising hydraulic cement comprising:
mixing hydraulic cement, water, and polyol and isocyanate compound, as ingredients for forming foamable polyurethane to obtain a flowable homogeneous mixture;
polymerizing the flowable homogeneous mixture to discharge free water present between cement particles based on foaming force and thereby phase-separate liquid water from a plastic composition containing the foamable polyurethane and hydraulic cement and losing flowability; and
removing the phase-separated water to obtain the plastic composition,
wherein water and polyol are mixed with the hydraulic cement before the isocyanate compound is mixed with the hydraulic cement.

### Claim 2 (depends on 1)

The method for manufacturing a plastic composition with a low water content comprising hydraulic cement according to claim 1,
wherein the hydraulic cement comprises any one selected from Portland cement, blast furnace slag cement, pozzolan cement, expansive cement, quick-setting/rapid-hardening cement, oil-well cement, white cement, colored cement and calcium aluminate cement, or a mixture thereof, or a mixture of any one selected from these cements and plaster.

### Claim 3 (depends on 1)

The method for manufacturing a plastic composition with a low water content comprising hydraulic cement according to claim 1,
wherein the homogeneous mixture comprises 2.5 parts by weight to 150 parts by weight of water and 10 parts by weight to 100 parts by weight of the ingredients for forming foamable polyurethane, with respect to 100 parts by weight of the hydraulic cement.