# US 2023/0054785 A1 · Curable composition

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- Number: US 2023/0054785 A1
- Document ID: US20230054785A1
- Status: Published application
- Kind: A1
- Application number: 17/786,692
- Filed: 2020-10-26
- Published: 2023-02-23
- Earliest claimed: 2019-12-19
- Assignees: Daicel Corporation
- Applicants: Daicel Corporation
- Inventors: Daisuke ITO
- Web page: https://patentgrep.com/patent/US20230054785A1

## CPC

- C08F 22/40: Imides, e.g. cyclic imides
- C08G 65/4012: {Other compound (II) containing a ketone group, e.g. X-Ar-C(=O)-Ar-X for polyetherketones}
- C08F 122/40: Imides, e.g. cyclic imides
- C08G 65/48: Polymers modified by chemical after-treatment
- C08K 5/14: Peroxides
- C08L 35/00: Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least one other carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C09D 135/00: Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least another carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09J 135/00: Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least another carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Adhesives based on derivatives of such polymers
- H10W 74/47: comprising organic materials, e.g. plastics or resins
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- 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)
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10

## Abstract

Provided is a curable composition having excellent workability and being capable of forming a cured product having super heat resistance by curing. The curable composition of the present disclosure includes a curable compound represented by Formula (1) below and a radical polymerization initiator. In the following formula, R1 and R2 each represent a curable functional group, and D1 and D2 each represent a single bond or a linking group. L represents a divalent group having a repeating unit containing a structure represented by Formula (I) below and a structure represented by Formula (II) below. Ar1 to A3 each represent an arylene group or a group in which two or more arylene groups are bonded via a single bond or a linking group. X represents —CO—, —S—, or —SO2—, and Y represents —S—, —SO2—, —O—, —CO—, —COO—, or —CONH—. n represents an integer of 0 or greater.

## Claims

### Claim 1

A curable composition comprising a curable compound represented by Formula (1) and a radical polymerization initiator:
where R1 and R2 are each, identically or differently, a curable functional group, and D1 and D2 are each, identically or differently, a single bond or a linking group; L is a divalent group having a repeating unit containing a structure represented by Formula (I) and a structure represented by Formula (II):
where Ar1 to Ar3 are each, identically or differently, an arylene group or a group in which two or more arylene groups are bonded via a single bond or a linking group; X is —CO—, —S—, or —SO2—;
Y is each, identically or differently, —S—, —SO2—, —O—, —CO—, —COO—, or —CONH—; and n is an integer of 0 or greater.

### Claim 2 (depends on 1)

The curable composition according to claim 1, wherein the radical polymerization initiator is a peroxide or a peracid ester.

### Claim 3 (depends on 1)

The curable composition according to claim 1, wherein R1 and R2 in Formula (1) are each, identically or differently, a curable functional group having a cyclic imide structure.

### Claim 4 (depends on 1)

The curable composition according to claim 1, wherein R1 and R2 in Formula (1) are each, identically or differently, a group selected from groups represented by Formulas (r-1) to (r-6):
where a bond from a nitrogen atom in each of the formulas bonds to D1 or D2.

### Claim 5 (depends on 1)

The curable composition according to claim 1, wherein D1 and D2 in Formula (1) are each, identically or differently, a group selected from groups having structures represented by Formulas (d-1) to (d-4):

### Claim 6 (depends on 1)

The curable composition according to claim 1, wherein Ar1 to Ar3 in Formula (I) and Formula (II) are each, identically or differently, an arylene group having from 6 to 14 carbons or a group in which two or more arylene groups having from 6 to 14 carbons are bonded via a single bond, a linear or branched alkylene group having from 1 to 5 carbons, or a group in which one or more hydrogen atoms of a linear or branched alkylene group having from 1 to 5 carbons are substituted by a halogen atom.

### Claim 7 (depends on 1)

The curable composition according to claim 1, wherein the structure represented by Formula (I) is a structure derived from benzophenone.

### Claim 8 (depends on 7)

The curable composition according to claim 7, wherein a proportion of a structural unit derived from benzophenone in a total amount of the compound represented by Formula (1) is 5 wt. % or greater.

### Claim 9 (depends on 1)

The curable composition according to claim 1, wherein the structure represented by Formula (II) is a structure derived from at least one compound selected from the group consisting of hydroquinone, resorcinol, 2,6-naphthalenediol, 2,7-naphthalenediol, 4,4′-dihydroxybiphenyl, 4,4′-dihydroxydiphenyl ether, 4,4′-dihydroxybenzophenone, 4,4′-dihydroxydiphenyl sulfide, 4,4′-dihydroxydiphenyl sulfone, and bisphenol A.

### Claim 10 (depends on 9)

The curable composition according to claim 9, wherein a proportion of a structural unit derived from hydroquinone, resorcinol, 2,6-naphthalenediol, 2,7-naphthalenediol, 4,4′-dihydroxybiphenyl, 4,4′-dihydroxydiphenyl ether, 4,4′-dihydroxybenzophenone, 4,4′-dihydroxydiphenyl sulfide, 4,4′-dihydroxydiphenyl sulfone, and bisphenol A in a total amount of the compound represented by Formula (1) is 5 wt. % or greater.

### Claim 11 (depends on 1)

A cured product of the curable composition described in claim 1.

### Claim 12 (depends on 1)

A semi-cured product of the curable composition described in claim 1.

### Claim 13 (depends on 1)

A structural body comprising a cured product or a semi-cured product of the curable composition described in claim 1.

### Claim 14 (depends on 1)

A laminate having a configuration in which a cured product or semi-cured product of the curable composition described in claim 1 and a substrate are laminated.

### Claim 15 (depends on 1)

A method for producing a laminate, comprising placing the curable composition described in claim 1 on a substrate and performing heat treatment to obtain a laminate having a configuration in which a cured product or semi-cured product of the curable composition and the substrate are laminated.

### Claim 16 (depends on 15)

The method for producing a laminate according to claim 15, wherein the method comprises applying a molten product of the curable composition on a support made of plastic, solidifying the applied molten product to form a thin film containing the curable compound, peeling the formed thin film from the support, laminating the formed thin film on a substrate, and performing heat treatment.

### Claim 17 (depends on 1)

A composite material comprising a cured product or a semi-cured product of the curable composition described in claim 1.

### Claim 18 (depends on 1)

An adhesive agent comprising the curable composition described in claim 1.

### Claim 19 (depends on 1)

A paint comprising the curable composition described in claim 1.

### Claim 20 (depends on 1)

A sealing agent comprising the curable composition described in claim 1.