# US 9,428,672 B2 · Crosslinking aid and practical application thereof

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- Number: US 9,428,672 B2
- Document ID: US9428672B2
- Status: Granted
- Kind: B2
- Application number: 14/767,678
- Filed: 2014-02-21
- Published: 2015-12-10
- Granted: 2016-08-30
- Earliest claimed: 2013-02-21
- Assignees: Nippon Kasei Chemical Company Limited
- Applicants: Nippon Kasei Chemical Company Limited
- Inventors: Mabuko Yamaura; Yukio Orikasa; Kazuya Senzaki
- Web page: https://patentgrep.com/patent/US9428672B2

## CPC

- C09J 123/36: by reaction with compounds containing nitrogen, e.g. by nitration
- C08K 5/20: Carboxylic acid amides
- C08K 5/34924: {containing cyanurate groups; Tautomers thereof}
- H10F 19/804: {Materials of encapsulations}
- C08J 2331/04: Homopolymers or copolymers of vinyl acetate
- C09J 123/0853: {Vinylacetate}
- Y02E 10/50: Photovoltaic [PV] energy
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- 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

The present invention provides a crosslinking aid comprising triallyl isocyanurate (TAIC), which serves for obtaining an adhesive resin exhibiting excellent insulation properties while maintaining good transparency, adhesive properties, heat resistance and flexibility of conventional crosslinked ethylene-vinyl acetate copolymers. The crosslinking aid of the present invention comprises a urethane poly(meth)acrylate in combination with triallyl isocyanurate.

## Claims

### Claim 1

A heat-crosslinking resin composition comprising an ethylene copolymer, a crosslinking agent and a crosslinking aid comprising a urethane poly(meth)acrylate in combination with triallyl isocyanurate.

### Claim 2

A radiation-crosslinking resin composition comprising an ethylene copolymer and a crosslinking aid comprising a urethane poly(meth)acrylate in combination with triallyl isocyanurate.

### Claim 3 (depends on 1)

A sealing material comprising the heat-crosslinking resin composition as defined in claim 1.

### Claim 4 (depends on 2)

A sealing material comprising the radiation-crosslinking resin composition as defined in claim 2.

### Claim 5 (depends on 3)

The sealing material according to claim 3, which is used for a solar cell.

### Claim 6

An ethylene copolymer composition comprising an ethylene copolymer, urethane poly(meth)acrylate and triallyl isocyanurate.

### Claim 7 (depends on 5)

A solar cell comprising the sealing material as defined in claim 5.