Adhesive film, scattering prevention film comprising the same and optical display apparatus comprising the same

Patent metadata

Field	Value
Publication number	US-2021261833-A1
Application number	US-202117179992-A
Country	US
Kind code	A1
Filing date	Feb 19, 2021
Priority date	Feb 20, 2020
Publication date	Aug 26, 2021
Grant date	—

Abstract

An adhesive film, a scattering prevention film including the same, and an optical display apparatus including the same are provided. An adhesive film is formed of an adhesive composition including: a polymerization product including a hydroxyl group-containing (meth)acrylic copolymer; and an alkylene oxide cross-linking agent. The adhesive film contains a substituted monocyclic cyclyloxy group and has a peel strength of about 950 gf/in or more, as measured with respect to a glass plate at about 25° C.

First claim

What is claimed is:

1 . An adhesive film formed of an adhesive composition comprising: a polymerization product comprising a hydroxyl group-containing (meth)acrylic copolymer; and an alkylene oxide cross-linking agent, the adhesive film containing a substituted monocyclic cyclyloxy group and having a peel strength of about 950 gf/in or more, as measured with respect to a glass plate at about 25° C.

2 . The adhesive film according to claim 1 , wherein the monocyclic cyclyloxy group is a C 5 to C 10 monocyclic cyclyloxy group.

3 . The adhesive film according to claim 1 , wherein the substituted monocyclic cyclyloxy group is obtained by substituting a hydrogen atom thereof with a methyl group or a branched C 3 to C 10 alkyl group.

4 . The adhesive film according to claim 1 , wherein the substituted monocyclic cyclyloxy group is derived from at least one selected from among trimethylcyclohexyl (meth)acrylate and tert-butylcyclohexyl (meth)acrylate.

5 . The adhesive film according to claim 1 , wherein the alkylene oxide cross-linking agent has an ethylene oxide group or a propylene oxide group and two to six (meth)acrylate groups.

6 . The adhesive film according to claim 1 , wherein the polymerization product comprises a polymerization product of a monomer mixture comprising a hydroxyl group-containing (meth)acrylate, an alkyl group-containing (meth)acrylate, and a heteroalicyclic group-containing monomer.

7 . The adhesive film according to claim 6 , wherein the monomer mixture comprises about 5 wt % to about 40 wt % of the hydroxyl group-containing (meth)acrylate, about 50 wt % to about 90 wt % of the alkyl group-containing (meth)acrylate, and about 1 wt % to about 20 wt % of the heteroalicyclic group-containing monomer.

8 . The adhesive film according to claim 6 , wherein the monomer mixture is free from at least one (meth)acrylate having the substituted monocyclic cyclyloxy group.

9 . The adhesive film according to claim 6 , wherein the adhesive composition comprises the polymerization product, the alkylene oxide cross-linking agent, and a substituted monocyclic cyclyloxy group-containing (meth)acrylate.

10 . The adhesive film according to claim 1 , wherein the alkylene oxide cross-linking agent is present in an amount of about 0.01 parts by weight to about 5 parts by weight relative to about 100 parts by weight of the polymerization product.

11 . The adhesive film according to claim 9 , wherein the substituted monocyclic cyclyloxy group-containing (meth)acrylate comprises at least one selected from among trimethylcyclohexyl (meth)acrylate and tert-butylcyclohexyl (meth)acrylate.

12 . The adhesive film according to claim 9 , wherein the substituted monocyclic cyclyloxy group-containing (meth)acrylate is present in an amount of about 0.5 parts by weight to less than about 20 parts by weight relative to about 100 parts by weight of the polymerization product.

13 . The adhesive film according to claim 1 , wherein the adhesive composition further comprises a photoinitiator.

14 . The adhesive film according to claim 1 , wherein the adhesive film has a storage modulus of about 200 kPa or less at about 25° C.

15 . A scattering prevention film comprising:
a base film; and an adhesive film on a lower surface of the base film, the adhesive film comprising the adhesive film according to claim 1 .

16 . The scattering prevention film according to claim 15 , further comprising a functional coating layer on an upper surface of the base film, the functional coating layer comprising at least one selected from among an anti-fingerprint layer, a hard coating layer, a UV absorbing layer, and a low-reflectivity layer.

17 . An optical display apparatus comprising the scattering prevention film according to claim 15 .

18 . A scattering prevention film comprising:
a base film; and an adhesive film on a lower surface of the base film, the adhesive film comprising the adhesive film according to claim 1 .

19 . The scattering prevention film according to claim 18 , further comprising a functional coating layer on an upper surface of the base film, the functional coating layer comprising at least one selected from among an anti-fingerprint layer, a hard coating layer, a UV absorbing layer, and a low-reflectivity layer.

20 . An optical display apparatus comprising the scattering prevention film according to claim 18 .

Assignees

• Samsung Sdi Co Ltd

Inventors

• Mun Sung Hyun
• Kang Ji Won
• Kim Do Young
• Kim Il Jin
• Kim Ji Yeon
• Kim Ji Ho
• Park Kyoung Gon
• Shin Dong Myeong
• Lee Gwang Hwan
• Lee Jin Young
• Han Jae Hyun
• Han Ji Young
• Heo Se Mi

Classifications

• C09J133/14

  of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen · CPC title

• C09J7/10

  without carriers · CPC title

• C08K5/103

  with polyalcohols · CPC title

• C08K5/101

  of monocarboxylic acids · CPC title

• C09J133/24 Primary

  Homopolymers or copolymers of amides or imides · CPC title