# US 8,541,508 B2 · Epoxy group-containing copolymer, epoxy (meth)acrylate copolymer using the same and their production processes

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 8,541,508 B2
- Document ID: US8541508B2
- Status: Granted
- Kind: B2
- Application number: 13/057,425
- Filed: 2009-08-07
- Published: 2011-06-16
- Granted: 2013-09-24
- Earliest claimed: 2008-08-08
- Assignees: Showa Denko K.K.
- Applicants: Hiroshi Uchida; Kazuhiko Ooga; Toshio Fujita; Masanao Hara
- Inventors: Hiroshi Uchida; Kazuhiko Ooga; Toshio Fujita; Masanao Hara
- Web page: https://patentgrep.com/patent/US8541508B2

## CPC

- C08F 220/32: containing epoxy radicals
- C08F 8/14: Esterification
- C08F 224/00: 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 heterocyclic ring containing oxygen (cyclic esters of polyfunctional acids C08F218/00; cyclic anhydrides of unsaturated acids C08F220/00, C08F222/00)
- H01B 3/40: epoxy resins
- C08F 220/14: Methyl esters {, e.g. methyl (meth)acrylate}
- C08F 2810/20: leading to a crosslinking, either explicitly or inherently
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})

## Abstract

According to the present invention, a novel epoxy group-containing copolymer, including a production process thereof, and an epoxy (meth)acrylate copolymer starting from the epoxy group-containing copolymer, including a production process thereof are provided. The epoxy group-containing copolymer of the present invention contains a specific epoxy group-containing repeating unit and an olefin-based repeating unit. A novel epoxy (meth)acrylate copolymer of the present invention is produced by reacting the epoxy group-containing copolymer with (meth)acrylic acid.

## Claims

### Claim 1

An epoxy (meth)acrylate copolymer comprising at least one of repeating units represented by the following formulae (a1′), (a2′), (b1) and (b2):
wherein each of R1 to R9 and R13 is a hydrogen atom or a methyl group, and R12 is a hydrogen atom, a methyl group or a phenyl group, and a repeating unit represented by the following formula (d):
wherein R14 is a hydrogen atom or a methyl group, and R15 is a hydrogen atom or a saturated or unsaturated hydrocarbon group having a carbon number of 24 or less.

### Claim 2 (depends on 1)

The epoxy (meth)acrylate copolymer as claimed in claim 1, wherein the acryl equivalent of said copolymer is from 300 to 3,500 g/eq.

### Claim 3 (depends on 1)

The epoxy (meth)acrylate copolymer as claimed in claim 1, wherein the total content of the repeating units represented by formulae (a1′), (a2′), (b1) and (b2) in said copolymer is from 10 to 90 mol%, the content of the repeating unit represented by formula (d) is from 5 to 90 mol%, and the total of the total content of the repeating units represented by formulae(a1′), (a2′), (b1) and (b2), and the content of the repeating unit represented by formula (d) is 100 mol% or less.

### Claim 4 (depends on 1)

The epoxy (meth)acrylate copolymer as claimed in claim 1, wherein said copolymer is obtained by reacting an epoxy group-containing copolymer containing at least one of repeating units represented by the following formulae (a) and (b):
wherein each of R1 to R9 is a hydrogen atom or a methyl group, and R12 is a hydrogen atom, a methyl group or a phenyl group and a repeating unit represented by formula (d), with (meth)acrylic acid.

### Claim 5 (depends on 4)

A process for producing the epoxy (meth)acrylate copolymer claimed in claim 4, comprising
a step of radically-copolymerizing at least one of monomers containing an epoxy group and an allyl group, represented by the following formulae (1) and (2):
wherein each of R1 to R9 is a hydrogen atom or a methyl group, and R12 is a hydrogen atom, a methyl group or a phenyl group, with an olefin represented by the following formula (4):
wherein R14 is a hydrogen atom or a methyl group, and R15 is a hydrogen atom or a saturated or unsaturated hydrocarbon group having a carbon number of 24 or less, to provide an epoxy group-containing copolymer containing at least one of repeating units represented by formulae (a) and (b), and a repeating unit represented by formula (d), and
a step of reacting (meth)acrylic acid with said epoxy group-containing copolymer.

### Claim 6 (depends on 5)

The process for producing an epoxy (meth)acrylate copolymer as claimed in claim 5, wherein said monomer containing an epoxy group and an allyl group is at least one of allyl 3,4-epoxycyclohexane-1-carboxylate, allyl 3,4-epoxy-1-methylcyclohexanecarboxylate and allyl 3,4-epoxy-6-phenylcyclohexanecarboxylate and said olefin is at least one of ethylene, 4-methyl-1-pentene, 1-hexene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene and 1-octadecene.

### Claim 7 (depends on 5)

The process for producing an epoxy (meth)acrylate copolymer as claimed in claim 5, wherein the epoxy equivalent of said epoxy group-containing copolymer is from 190 to 3,000 g/eq.