Adhesive composition, adhesive film comprising adhesive composition, back plate film comprising adhesive film, and plastic organic light emitting display comprising adhesive film

Abstract

The present application relates to an adhesive composition, an adhesive film comprising the adhesive composition, a back plate film comprising the adhesive film, and a plastic organic light emitting display comprising the adhesive film.

Description

technical field

[0001] This application claims priority and benefit from Korean Patent Application No. 10-2018-0087790 filed with the Korean Intellectual Property Office on July 27, 2018, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to an adhesive composition, an adhesive film comprising the same, a backsheet film comprising the adhesive film, and a plastic organic light emitting display comprising the adhesive film. Background technique

[0003] Adhesive sheets having high adhesive strength from the initial stage of adhesion are known in the art. Furthermore, when such an adhesive sheet is used to fix a substrate, an adhesive sheet having sufficient adhesive strength to fix the substrate is selected.

[0004] At the same time, air bubbles or unexpected foreign matter generated during the process of bonding the adhesive sheet to the substrate may be introduced, which is not preferable in terms of appearance or a...

Examples

Embodiment approach

[0154] Hereinafter, the present disclosure will be described in detail with reference to the embodiments so that those skilled in the art can easily implement the present disclosure. However, the present disclosure can be implemented in various forms, and is not limited to the embodiments described herein.

preparation example 1

[0156] Polymerization of (meth)acrylate-based resin

[0157] After introducing ethylhexyl acrylate (EHA) / methyl methacrylate (MMA) / N-vinylpyrrolidone (VP) / hydroxyethyl acrylate (HEA) into acetic acid at a weight ratio of 65 / 20 / 5 / 10 After ethyl ester (EA), azobisisobutyronitrile (AIBN) (thermal polymerization initiator) was introduced thereinto to prepare a (meth)acrylate-based resin having a weight average molecular weight of 1,000,000 g / mol.

preparation example 2

[0158] Polymerization of Polymer

[0159] Polymers having the compositions and melting temperatures of Table 1 below were prepared.

[0160] [Table 1]

[0161]

[0162] In Table 1, FM0721 is monofunctional polysiloxane and a product of Chisso Corporation is used, and FM0721 is (meth)acrylate in which polysiloxane exists.

[0163] The BHA, STA, and HDA monomers used in Preparations 1 to 4 are monomers that have only Tm characteristics when polymerized, and do not exhibit Tg characteristics.

[0164] In Table 1, BHA is behenyl acrylate, HAD is hexadecyl acrylate, and STA is stearyl acrylate.

[0165] - Manufacture of back sheet film

technical field

[0001] This application claims priority and benefit from Korean Patent Application No. 10-2018-0087790 filed with the Korean Intellectual Property Office on July 27, 2018, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to an adhesive composition, an adhesive film comprising the same, a backsheet film comprising the adhesive film, and a plastic organic light emitting display comprising the adhesive film. Background technique

[0003] Adhesive sheets having high adhesive strength from the initial stage of adhesion are known in the art. Furthermore, when such an adhesive sheet is used to fix a substrate, an adhesive sheet having sufficient adhesive strength to fix the substrate is selected.

[0004] At the same time, air bubbles or unexpected foreign matter generated during the process of bonding the adhesive sheet to the substrate may be introduced, which is not preferable in terms of appearance or a...

Examples

Embodiment approach

[0154] Hereinafter, the present disclosure will be described in detail with reference to the embodiments so that those skilled in the art can easily implement the present disclosure. However, the present disclosure can be implemented in various forms, and is not limited to the embodiments described herein.

preparation example 1

[0156] Polymerization of (meth)acrylate-based resin

[0157] After introducing ethylhexyl acrylate (EHA) / methyl methacrylate (MMA) / N-vinylpyrrolidone (VP) / hydroxyethyl acrylate (HEA) into acetic acid at a weight ratio of 65 / 20 / 5 / 10 After ethyl ester (EA), azobisisobutyronitrile (AIBN) (thermal polymerization initiator) was introduced thereinto to prepare a (meth)acrylate-based resin having a weight average molecular weight of 1,000,000 g / mol.

preparation example 2

[0158] Polymerization of Polymer

[0159] Polymers having the compositions and melting temperatures of Table 1 below were prepared.

[0160] [Table 1]

[0161]

[0162] In Table 1, FM0721 is monofunctional polysiloxane and a product of Chisso Corporation is used, and FM0721 is (meth)acrylate in which polysiloxane exists.

[0163] The BHA, STA, and HDA monomers used in Preparations 1 to 4 are monomers that have only Tm characteristics when polymerized, and do not exhibit Tg characteristics.

[0164] In Table 1, BHA is behenyl acrylate, HAD is hexadecyl acrylate, and STA is stearyl acrylate.

[0165] - Manufacture of back sheet film

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