# US 11,999,896 B2 · Compositions comprising latent heat storage materials and methods of making the same

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- Number: US 11,999,896 B2
- Document ID: US11999896B2
- Status: Granted
- Kind: B2
- Application number: 17/136,487
- Filed: 2020-12-29
- Published: 2021-05-13
- Granted: 2024-06-04
- Earliest claimed: 2012-01-03
- Assignees: Phase Change Energy Solutions, Inc.
- Applicants: Phase Change Energy Solutions, Inc.
- Inventors: Reyad I. Sawafta; Najih Naser
- Web page: https://patentgrep.com/patent/US11999896B2

## CPC

- C09K 5/063: {Materials absorbing or liberating heat during crystallisation; Heat storage materials}
- C08J 9/0009: {Phase change materials}
- C08J 2375/04: Polyurethanes
- C09K 2205/102: Alcohols
- Y02E 60/14: Thermal energy storage
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- 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)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

In one aspect, compositions are described herein. In some embodiments, a composition comprises a latent heat storage material having a solid-to-gel transition between about −50° C. and about 100° C. at 1 atm. In some embodiments, a composition comprises a foam and a latent heat storage material dispersed in the foam, the latent heat storage material having a solid-to-gel transition between about −50° C. and about 100° C. at 1 atm.

## Claims

### Claim 1

A composition comprising a latent heat storage material, the latent heat storage material comprising one or more A-B-A trimers, wherein each A-B-A trimer is a bifunctional linker component B bonded to two monofunctional oxidized fatty components A.

### Claim 2 (depends on 1)

The composition of claim 1 further comprising an aerogel and/or a zeolite.

### Claim 3 (depends on 1)

The composition of claim 1, wherein the oxidized fatty components comprise a fatty acid, fatty alcohol, alkyl ester of a fatty acid, fatty sulfonate, fatty phosphonate, or a mixture thereof.

### Claim 4 (depends on 1)

The composition of claim 1, wherein the bifunctional linker component B comprises a diisocyanate.

### Claim 5 (depends on 1)

The composition of claim 1, wherein the bifunctional linker component B comprises a polyol.

### Claim 6 (depends on 1)

The composition of claim 1, wherein the bifunctional linker component comprises a saccharide, a cellulose, or a sugar alcohol.

### Claim 7 (depends on 1)

The composition of claim 1, wherein the bifunctional linker component B comprises an ionic liquid.

### Claim 8 (depends on 1)

The composition of claim 1, wherein at least one of the oxidized fatty components A is chemically bonded to the linker component B through a urethane bond or through an ester bond.

### Claim 9 (depends on 1)

The composition of claim 1, wherein the latent heat storage material is non-polymeric.

### Claim 10 (depends on 1)

The composition of claim 1, wherein the latent heat storage material is not microencapsulated.

### Claim 11 (depends on 1)

The composition of claim 1, wherein the composition comprises less than 5 weight percent water, based on the total weight of the composition.

### Claim 12 (depends on 1)

The composition of claim 1, wherein the composition is non-flammable.

### Claim 13

A composition including:
a foam; and
a latent heat storage material dispersed in the foam, the latent heat storage material comprising one or more A-B-A trimers in which two monofunctional oxidized fatty components A are chemically bonded to a bifunctional linker component B.

### Claim 14 (depends on 13)

The composition of claim 13, wherein the composition has a flammability rating of A1, A2, or B1 when measured according to DIN 4102.

### Claim 15 (depends on 13)

The composition of claim 13, wherein the foam comprises a polyurethane foam.

### Claim 16 (depends on 13)

The composition of claim 13, wherein:
the oxidized fatty components comprise a fatty acid, fatty alcohol, alkyl ester of a fatty acid, fatty sulfonate, fatty phosphate, or a mixture thereof; and
the bifunctional linker component B comprises a diisocyanate, a polyol, a saccharide, a cellulose, or a sugar alcohol.