# US 10,870,785 B2 · Energy efficient cementitious mortars

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- Number: US 10,870,785 B2
- Document ID: US10870785B2
- Status: Granted
- Kind: B2
- Application number: 16/242,978
- Filed: 2019-01-08
- Published: 2019-07-11
- Granted: 2020-12-22
- Earliest claimed: 2018-01-08
- Assignees: Laticrete International, Inc.
- Applicants: Laticrete International, Inc.
- Inventors: Rajeswari Kompalli; Randall Bright; Eerik Maandi
- Web page: https://patentgrep.com/patent/US10870785B2

## CPC

- C09K 5/14: Solid materials, e.g. powdery or granular
- C04B 14/06: Quartz; Sand
- C04B 14/28: of calcium
- C04B 14/38: Fibrous materials; Whiskers
- C04B 22/02: Elements
- C04B 24/2623: {Polyvinylalcohols; Polyvinylacetates}
- C04B 24/383: {Cellulose or derivatives thereof}
- C04B 26/02: Macromolecular compounds
- C04B 28/04: Portland cements
- C04B 2103/32: Superplasticisers
- C04B 2111/00465: {Heat conducting materials}
- C04B 2111/00637: {as glue or binder for uniting building or structural materials}
- C04B 2111/62: Self-levelling compositions
- C04B 2111/70: Grouts, e.g. injection mixtures for cables for prestressed concrete
- C04B 2201/32: for the thermal conductivity, e.g. K-factors
- Y02B 30/00: Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02W 30/91: Use of waste materials as fillers for mortars or concrete
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- 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
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT

## Abstract

Thermally conductive cementitious compositions for use in flooring installations that are applied over a heat radiating flooring system to increase the thermal conductance of the flooring system and increase the rate of heating the flooring system. The thermally conductive cementitious compositions include a cementitious composition, amorphous flake graphite carbon, and an aqueous solution suitable for use as a thermally conductive mortar, grout or adhesive for flooring installations. The thermally conductive cementitious compositions also include a cementitious composition, mesh fine aluminum oxide, mesh coarse aluminum oxide, and an aqueous solution that provides a thermally conductive mortar, grout or adhesive for use in flooring installations.

## Claims

### Claim 1

A thermally conductive cementitious composition for use in flooring installations comprising:
a cementitious composition comprising a polymer modified cement tile adhesive present in an amount of about 35 wt. %;
amorphous flake graphite carbon; and
an aqueous solution,
wherein the thermally conductive cementitious composition comprises a thermally conductive mortar, grout or adhesive for use in flooring installations.

### Claim 2 (depends on 1)

The composition of claim 1 wherein the amorphous flake graphite carbon is present in an amount of about 6 wt. %.

### Claim 3 (depends on 2)

The composition of claim 2 wherein the aqueous solution is water present in an amount of about 25.5 wt. %.

### Claim 4 (depends on 1)

The composition of claim 1 wherein the thermally conductive cementitious composition has high thermal conductance and is applied over a heat radiating flooring system to increase the thermal conductance of the flooring system and increase the rate of heating the flooring system.

### Claim 5 (depends on 4)

The composition of claim 4 wherein the thermally conductive cementitious composition is a thermally conductive mortar.

### Claim 6 (depends on 5)

The composition of claim 5 wherein the thermally conductive mortar is a self-leveling underlayment, an adhesive, a patch material, grout, or a cementitious mortar.

### Claim 7

A thermally conductive cementitious composition for use in flooring installations comprising:
a cementitious composition, a sand aggregate present in an amount of about 50 wt. % to about 65 wt. %;
amorphous flake graphite carbon; and
an aqueous solution,
wherein the thermally conductive cementitious composition comprises a thermally conductive mortar, grout or adhesive for use in flooring installations.

### Claim 8 (depends on 7)

The composition of claim 7 wherein the amorphous flake graphite carbon is present in an amount of about 4 wt. % to about 10 wt. %.

### Claim 9 (depends on 8)

The composition of claim 8 wherein the aqueous solution is water present in an amount of about 24.50 wt. % based on 100 wt % of dry powder mix.

### Claim 10 (depends on 9)

The composition of claim 9 further including:
Portland cement present in an amount of about 25 wt. % to about 30 wt. %;
calcium magnesium carbonate present in an amount of about 4 wt. % to about 10 wt. %;
vinyl acetate polymer present in an amount of about 1.5 wt. % to about 10 wt. %;
methylcellulose present in an amount of about 0.2 wt. % to about 1 wt. %;
calcium salt present in an amount of about 0 wt. % to about 0.5 wt. %; and
super plasticizer present in an amount of about 0 wt. % to about 0.5 wt. %.

### Claim 11 (depends on 10)

The composition of claim 10 wherein:
the sand aggregate is present in an amount of about 58.20 wt. %;
the amorphous flake graphite carbon is present in an amount of about 6.20 wt. %;
the Portland cement is present in an amount of about 26.52 wt. %;
the calcium magnesium carbonate is present in an amount of about 5.85 wt. %;
the vinyl acetate polymer is present in an amount of about 2.60 wt. %;
the methylcellulose is present in an amount of about 0.31 wt. %;
the calcium salt is present in an amount of about 0.17 wt. %; and
the super plasticizer is present in an amount of about 0.15 wt. %.

### Claim 12 (depends on 7)

The composition of claim 7 wherein the thermally conductive cementitious composition has high thermal conductance and is applied over a heat radiating flooring system to increase the thermal conductance of the flooring system and increase the rate of heating the flooring system.

### Claim 13 (depends on 12)

The composition of claim 12 wherein the thermally conductive cementitious composition is a thermally conductive mortar.

### Claim 14 (depends on 13)

The composition of claim 13 wherein the thermally conductive mortar is a self-leveling underlayment, an adhesive, a patch material, grout, or a cementitious mortar.

### Claim 15

A thermally conductive cementitious composition for use in flooring installations comprising:
a dry component comprising amorphous flake graphite carbon present in an amount of 4 wt. % to 10 wt. %, based on a total weight of the dry component, with the remainder of the dry component being a polymer modified cement tile adhesive; and
water mixed with the dry component to render the thermally conductive cementitious composition that increases heat transfer from a radiant floor heating system, over which the thermally conductive cementitious composition is deposited, to a substrate overlying the thermally conductive cementitious composition.

### Claim 16 (depends on 15)

The composition of claim 15 wherein the polymer modified cement tile adhesive comprises a polymer modified thinset.

### Claim 17 (depends on 15)

The composition of claim 15 wherein the amorphous flake graphite carbon comprises graphite grade 146.

### Claim 18 (depends on 15)

The composition of claim 15 wherein the amorphous flake graphite carbon comprises flakes ranging in size from 50-800 micrometers in diameter and 1-150 micrometers thick.

### Claim 19 (depends on 15)

The composition of claim 15 wherein the amorphous flake graphite carbon has a purity ranging from 80-99.9% carbon.

### Claim 20

A thermally conductive cementitious composition for use in flooring installations comprising:
a dry component comprising a cementitious composition comprising amorphous flake graphite carbon present in an amount of 4-10 wt. %, and sand aggregates having a diameter ranging from 0.075 mm-3 mm present in an amount of 50-65 wt. %, wherein said wt. % are based on a total weight of the dry component; and
water mixed with the dry component to render the thermally conductive cementitious composition that increases heat transfer from a radiant floor heating system, over which the thermally conductive cementitious composition is deposited, to a substrate overlying the thermally conductive cementitious composition.

### Claim 21 (depends on 20)

The composition of claim 20 further including:
grey cement present in an amount of 25-30 wt. %;
calcium magnesium carbonate present in an amount of 4-10 wt. %;
vinyl acetate polymer present in an amount of 1.5-10 wt. %;
methylcellulose present in an amount of 0.2-1 wt. %;
calcium salt present in an amount of 0-0.5 wt. %;
super plasticizer present in an amount of 0-0.5 wt. %,
wherein said wt. % are based on a total weight of the dry component.

### Claim 22 (depends on 20)

The composition of claim 20 wherein the amorphous flake graphite carbon comprises flakes ranging in size from 50-800 micrometers in diameter and 1-150 micrometers thick.