Adhesive composition, adhesive film comprising same, backplate 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 same, a backplate film comprising the adhesive film, and a plastic organic light emitting display comprising theadhesive film.

Description

Technical field

[0001] This application claims the priority and rights of Korean Patent Application No. 10-2018-0087785 filed with the Korean Intellectual Property Office on July 27, 2018, the entire content of which is incorporated herein by reference.

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

[0003] In the art, an adhesive sheet having high adhesive strength from the initial stage of adhesion is known. In addition, when using such an adhesive sheet to fix the substrate, an adhesive sheet having sufficient adhesive strength is selected to fix the substrate.

[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 adhesiveness, and sometime...

Examples

Embodiment approach

[0156]Hereinafter, the present disclosure will be described in detail with reference to embodiments so that those skilled in the art can easily implement the present disclosure. However, the present disclosure may be implemented in various different forms, and is not limited to the embodiments described herein.

preparation example 1

[0158]Polymerization of (meth)acrylate-based resins

[0159]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 the ethyl ester (EA), azobisisobutyronitrile (AIBN) (thermal polymerization initiator) was introduced therein to prepare a (meth)acrylate-based resin having a weight average molecular weight of 1,000,000 g / mol.

preparation example 2

[0160]Polymerization

[0161]A polymer having the composition and melting temperature of Table 1 below was prepared.

[0162][Table 1]

[0163]

[0164]In Table 1, FM0721 is a monofunctional polysiloxane and a product of Chisso Corporation is used, and FM0721 is a (meth)acrylate in which polysiloxane is present.

[0165]The BHMA and HDA monomers used in Preparations 1 to 3 are monomers that only have Tm characteristics during polymerization and do not exhibit Tg characteristics.

[0166]In Table 1, BHMA is behenyl methacrylate and HDA is cetyl acrylate.

[0167]-Manufacturing of back sheet film

Technical field

[0001] This application claims the priority and rights of Korean Patent Application No. 10-2018-0087785 filed with the Korean Intellectual Property Office on July 27, 2018, the entire content of which is incorporated herein by reference.

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

[0003] In the art, an adhesive sheet having high adhesive strength from the initial stage of adhesion is known. In addition, when using such an adhesive sheet to fix the substrate, an adhesive sheet having sufficient adhesive strength is selected to fix the substrate.

[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 adhesiveness, and sometime...

Examples

Embodiment approach

[0156]Hereinafter, the present disclosure will be described in detail with reference to embodiments so that those skilled in the art can easily implement the present disclosure. However, the present disclosure may be implemented in various different forms, and is not limited to the embodiments described herein.

preparation example 1

[0158]Polymerization of (meth)acrylate-based resins

[0159]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 the ethyl ester (EA), azobisisobutyronitrile (AIBN) (thermal polymerization initiator) was introduced therein to prepare a (meth)acrylate-based resin having a weight average molecular weight of 1,000,000 g / mol.

preparation example 2

[0160]Polymerization

[0161]A polymer having the composition and melting temperature of Table 1 below was prepared.

[0162][Table 1]

[0163]

[0164]In Table 1, FM0721 is a monofunctional polysiloxane and a product of Chisso Corporation is used, and FM0721 is a (meth)acrylate in which polysiloxane is present.

[0165]The BHMA and HDA monomers used in Preparations 1 to 3 are monomers that only have Tm characteristics during polymerization and do not exhibit Tg characteristics.

[0166]In Table 1, BHMA is behenyl methacrylate and HDA is cetyl acrylate.

[0167]-Manufacturing of back sheet film

Images