Curable composition, antifogging coating agent, and cured film

Patent metadata

Field	Value
Publication number	US-11939412-B2
Application number	US-202217707120-A
Country	US
Kind code	B2
Filing date	Mar 29, 2022
Priority date	Mar 31, 2021
Publication date	Mar 26, 2024
Grant date	Mar 26, 2024

Abstract

Provided are a curable composition that provides a cured film excellent in antifogging properties, an antifogging coating agent containing the composition, and a cured film formed from a cured product of the composition. A curable composition according to an embodiment of the invention contains a (meth)acrylate compound (A), and a surfactant (B), wherein the component (A) contains a (meth)acrylate compound (A1) having an HLB value of 15.2 or more, and the content of the component (B) with respect to 100 parts by mass of the component (A) is 0.1 parts by mass or more and 20 parts by mass or less.

First claim

What is claimed is:

1. A curable composition comprising a (meth)acrylate compound (A), and a surfactant (B),
wherein the component (A) comprises a (meth)acrylate compound (A1) having an HLB value of 15.2 or more, wherein the HLB value is calculated according to the following formula: 20× (sum of formula weights of hydrophilic funcational groups)/(molecular weights), and
a content of the component (B) with respect to 100 parts by mass of the component (A) is 0.1 parts by mass or more and 20 parts by mass or less.

2. The curable composition according to claim 1 , wherein the component (A1) comprises a polyfunctional (meth)acrylate compound represented by formula (a1), and/or a bifunctional (meth)acrylate compound represented by formula (a2):

wherein in the formula (a1), n is a number of 4 or more;
A1 represents independently at each occurrence an alkylene group having 2 or more and 4 or less carbon atoms;
k, 1 and m are a number of 0 or more, and a sum of k, 1 and m is 50 or more; and
R 1 represents independently at each occurrence a hydrogen atom or a (meth)acryloyl group, and at least three RI represent a (meth)acryloyl group, and

wherein in the formula (a2), A 2 represents an alkylene group having 2 or more and 4 or less carbon atoms;
p is a number of 10 or more; and
R 2 represents independently at each occurrence a (meth)acryloyl group.

3. The curable composition according to claim 1 , wherein the component (A) further comprises a polyfunctional (meth)acrylate compound (A2) other than the component (A1), and
a content of the component (A2) in 100% by mass of the component (A) is 1% by mass or more and 65% by mass or less.

4. The curable composition according to claim 1 , further comprising an initiator (D), wherein
a content of the component (D) with respect to 100 parts by mass of the component (A) is 0.1 parts by mass or more and 20 parts by mass or less.

5. An antifogging coating agent comprising the curable composition according to claim 1 .

6. A cured film formed from a cured product of the curable composition according to claim 1 .

Assignees

• Tokyo Ohka Kogyo Co Ltd

Inventors

• Shimizu Hisato
• Senzaki Takahiro

Classifications

• C08F222/103 Primary

  of trialcohols, e.g. trimethylolpropane tri(meth)acrylate · CPC title

• C08F222/105

  of pentaalcohols · CPC title

• C08K5/06

  Ethers; Acetals; Ketals; Ortho-esters · CPC title

• C08K5/42

  Sulfonic acids; Derivatives thereof · CPC title

• C09D133/08

  Homopolymers or copolymers of acrylic acid esters · CPC title