# US 2019/0315901 A1 · Unsaturated polyester resin composition

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- Number: US 2019/0315901 A1
- Document ID: US20190315901A1
- Status: Published application
- Kind: A1
- Application number: 16/470,883
- Filed: 2017-12-27
- Published: 2019-10-17
- Earliest claimed: 2017-01-10
- Assignees: Osaka Soda Co., Ltd.
- Applicants: Osaka Soda Co., Ltd.
- Inventors: Suguru HASHIDATE; Ryosuke FUJIMOTO
- Web page: https://patentgrep.com/patent/US20190315901A1

## CPC

- C08F 283/01: on to unsaturated polyesters {(C08F283/004 takes precedence)}
- C08F 236/20: unconjugated
- C08F 236/22: the radical having three or more carbon-to-carbon double bonds
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS

## Abstract

An object of the present invention is to provide very versatile unsaturated polyester resin compositions. According to the present invention it has been found that very versatile resin compositions can be obtained using unsaturated polyester resin compositions each containing an unsaturated polyester resin and an aliphatic multifunctional allyl ester represented by the following formula (1): Z—(—COOCH2—CH═CH2)n (1) wherein n is an integer of 2 to 4; Z is an n-valent aliphatic hydrocarbon group, provided that Z is a bond only when n is 2.

## Claims

### Claim 1

An unsaturated polyester resin composition, comprising:
an unsaturated polyester resin; and
an aliphatic multifunctional allyl ester represented by the following formula (1):
Z—(—COOCH2—CH═CH2)n (1)
wherein n is an integer of 2 to 4; and Z is an n-valent aliphatic hydrocarbon group, provided that Z is a bond only when n is 2.

### Claim 2 (depends on 1)

The unsaturated polyester resin composition according to claim 1,
wherein the aliphatic multifunctional allyl ester of formula (1) is at least one selected from the group consisting of diallyl succinate, diallyl fumarate, diallyl maleate, diallyl itaconate, diallyl citraconate, and diallyl adipate.

### Claim 3 (depends on 1)

The unsaturated polyester resin composition according to claim 1, further comprising an initiator.

### Claim 4 (depends on 1)

A cured product, obtained by thermally curing the unsaturated polyester resin composition according to claim 1.

### Claim 5 (depends on 1)

A formed article, obtained by forming the unsaturated polyester resin composition according to claim 1.