# US 11,441,022 B2 · Resin member and sheet using same, method for producing resin member, and heat storage material and heat control sheet using same

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- Number: US 11,441,022 B2
- Document ID: US11441022B2
- Status: Granted
- Kind: B2
- Application number: 16/339,743
- Filed: 2017-10-04
- Published: 2020-02-13
- Granted: 2022-09-13
- Earliest claimed: 2016-10-07
- Assignees: Showa Denko Materials Co., Ltd.
- Applicants: Hitachi Chemical Company, Ltd.
- Inventors: Akira Nagai; Tsuyoshi Morimoto; Teiichi Inada
- Web page: https://patentgrep.com/patent/US11441022B2

## CPC

- C08L 23/0815: {with aliphatic 1-olefins containing one carbon-to-carbon double bond}
- C08J 5/18: Manufacture of films or sheets
- C08K 5/01: Hydrocarbons {(C08K5/0091 takes precedence)}
- C08K 5/09: Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08L 23/12: Polypropene
- C09K 5/063: {Materials absorbing or liberating heat during crystallisation; Heat storage materials}
- F28D 20/02: using latent heat
- C08L 2203/16: used for films
- C08L 2203/30: used for thermoforming
- C08L 2205/02: containing two or more polymers of the same C08L -group
- Y02E 60/14: Thermal energy storage
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- 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)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

In one aspect, the present invention is a resin member comprising a copolymer of ethylene and an olefin having 3 or more carbon atoms, a straight-chain saturated hydrocarbon compound, and a gelling agent.

## Claims

### Claim 1

A resin member comprising:
a copolymer of ethylene and an olefin having 3 or more carbon atoms;
a straight-chain saturated hydrocarbon compound; and
at least one selected from the group consisting of a carboxylic acid and a carboxylic acid metal salt, wherein the metal constituting the carboxylic acid metal salt is aluminum,
wherein the resin member is in the form of a sheet, and
wherein a content of the copolymer of ethylene and an olefin having 3 or more carbon atoms is 5% by mass or more and 50% by mass or less based on the total amount of the resin member, a content of the straight-chain saturated hydrocarbon compound is 40% by mass or more and 90% by mass or less based on the total amount of the resin member, and a content of the at least one selected from the group consisting of a carboxylic acid and a carboxylic acid metal salt is 3% by mass or more and 10% by mass or less based on the total amount of the resin member.

### Claim 2 (depends on 1)

The resin member according to claim 1, wherein a number of carbon atoms of the olefin is 3 to 8.

### Claim 3 (depends on 1)

The resin member according to claim 1, wherein a melting point of the straight-chain saturated hydrocarbon compound is less than 50° C., and the number of carbon atoms of the olefin is 8.

### Claim 4 (depends on 1)

The resin member according to claim 1, wherein a melting point of the straight-chain saturated hydrocarbon compound is 50° C. or more, and the resin member further comprises at least one selected from the group consisting of a polyethylene and a polypropylene.

### Claim 5 (depends on 1)

A sheet comprising:
a metal layer; and
a resin layer formed on the metal layer and composed of the resin member according to claim 1.

### Claim 6 (depends on 1)

The resin member according to claim 1, wherein a content of the copolymer of ethylene and an olefin having 3 or more carbon atoms is 10% by mass or more and 40% by mass or less based on the total amount of the resin member.

### Claim 7 (depends on 1)

The resin member according to claim 1, wherein a content of the copolymer of ethylene and an olefin having 3 or more carbon atoms is 15% by mass or more and 30% by mass or less based on the total amount of the resin member.

### Claim 8 (depends on 1)

The resin member according to claim 1, wherein the straight-chain saturated hydrocarbon compound has a melting point within a range of 0 to 100° C.

### Claim 9 (depends on 1)

The resin member according to claim 1, wherein a content of the straight-chain saturated hydrocarbon compound is 45% by mass or more and 80% by mass or less based on the total amount of the resin member.

### Claim 10 (depends on 1)

The resin member according to claim 1, wherein a content of the straight-chain saturated hydrocarbon compound is 50% by mass or more and 70% by mass or less based on the total amount of the resin member.

### Claim 11 (depends on 1)

The resin member according to claim 1, further comprising a polymer having a melting point of 100° C. or more.