Sealant composition for liquid crystal display device

• US 8,367,744 B2
• Filed: 05/27/2010
• Issued: 02/05/2013
• Est. Priority Date: 10/12/2009
• Status: Expired due to Fees

• Current Assignee: Korea Kumho Petrochemical Co Limited (Korea Kumho Petrochemical)
• Original Assignee: Korea Kumho Petrochemical Co Limited (Korea Kumho Petrochemical)
• Inventors: Park, Joo Hyun, Cho, Gyu Won, Son, Ki In
• Primary Examiner(s): MCCLENDON, SANZA L
• Application Number:
  US12/788,356
• Publication Number:
  US 20110086936A1
• Time in Patent Office: 985 Days
• Field of Search: 522/104, 522/150, 522/178, 522/179, 522/182, 522/135, 522/144, 522/100, 522/102, 522/103, 522/109, 522/110, 522/111, 522/112, 522/113, 522/114, 522/121, 522/120, 522/149, 522/170, 522/183, 522/184, 428/1.1, 428/1.53, 428/1.55, 428/1.5
• US Class Current: 522/103
• CPC Class Codes: C08L 2666/04 Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
• CPC Class Codes: C08L 33/08 Homopolymers or copolymers of acrylic acid esters
• CPC Class Codes: C08L 63/00 Compositions of epoxy resins; Compositions of derivatives of epoxy resins
• CPC Class Codes: C09K 2323/00 Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
• CPC Class Codes: C09K 2323/05 Bonding or intermediate layer characterised by chemical composition, e.g. sealant or spacer
• CPC Class Codes: C09K 2323/055 Epoxy
• CPC Class Codes: C09K 2323/059 Unsaturated aliphatic polymer, e.g. vinyl
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 2202/025 thermocurable
• CPC Class Codes: G02F 2202/28 Adhesive materials or arrangements

Abstract

Disclosed is a sealant composition for a liquid crystal display device, the sealant composition including a (meta) acrylate compound as expressed in Chemical Formula 1 below

Claims

1. A sealant composition for a liquid crystal display device, the sealant composition comprising:

a (meta) acrylate compound as expressed in Chemical Formula 1 below

2. The sealant composition of claim 1, wherein a molecular weight of the (meta) acrylate compound of Chemical Formula (1) is about 10,000 to 100,000.

3. A sealant composition for a liquid crystal display device, the composition comprising:

100 parts by weight of modified epoxy resin partly including a (meta) acrylate group;

1 to 10 parts by weight of a thermosetting agent;

1 to 5 parts by weight of a photopolymerization initiator; and

1 to 50 parts by weight of a (meta) acrylate compound as expressed in Chemical Formula (1) below,

4. The sealant composition of claim 3, further comprising:

10 to 40 parts by weight of at least one additive of an inorganic filler, a thixotropic modulator, and a silane coupling agent.

5. The sealant composition of claim 3, wherein a viscosity of the modified epoxy resin is about 1000 cps to 15000 cps.

6. The sealant composition of claim 3, wherein the modified epoxy resin includes at least one resin selected from a group consisting of a novolac-type epoxy resin, a biphenyl-type epoxy resin, a naphthalene-type epoxy resin, a trisphenol methane-type epoxy resin, and a bisphenol-type epoxy resin.

7. The sealant composition of claim 3, wherein the thermosetting agent includes at least one selected from a group consisting of imidazoles, dihydrazides, and amines.

8. The sealant composition of claim 3, wherein the photopolymerization initiator includes at least one selected from a group consisting of a benzoin compound, acetophenones, benzophenones, thioxanthones, anthraquinone, α

—

acyl oxime-esters, phenylglyoxylates, benzils, an azo compound, a di-phenyl sulfide compound, an acyl phosphine oxide compound, an organic pigment compound, and an iron phthalocyanine compound.

9. The sealant composition of claim 4, wherein the thixotropic modulator includes at least one selected from a group consisting of methyl cellulose, methyl ethyl ketone peroxide, oxidized-polyethylene wax, modulated polypropylene emulsion, polyamide wax, organoclay, alkyl sulfate, hydroxyl ethyl cellulose, hydroxyl acid esters, poly vinyl alcohol, poly dimethylsiloxane, unsaturated carboxylic acid monomers, hydroxide carboxylic acid amides, ethylene glycol, diethylene glycol, alkaline earth metal hydroxides, and alkaline earth metal carbonates.