High-filling-property OCA optical glue and OCA optical glue film
An optical glue and filling technology, which is applied in the direction of adhesives, film/sheet release liners, film/sheet adhesives, etc., can solve the problems of increasing demand for OCA and the inability of OCA to meet new demands, and achieve Anti-foam effect
Active Publication Date: 2022-03-22
SUZHOU FINESET MATERIAL TECH CO LTD
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
As a result, the traditional OCA cannot meet the new demand; at the same time, as China has become the world's number one electronic product R & D and production country, the demand for OCA has shown a blowout growth
Method used
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Embodiment Construction
[0031] The technical solutions of the present invention will be further described below in combination with specific embodiments.
[0032] 1. Preparation of glue
[0033] The preparation process of glue includes solvent method, bulk thermal polymerization, photopolymerization and emulsion polymerization. The following is an example of the solvent method:
[0034] 1. See Table 1 for the formula of solvent glue
[0035] Table 1
[0036]
[0037]
[0038] Where: S stands for sample; C stands for comparison
[0039] 2EHA-isooctyl acrylate; BA-n-butyl acrylate; 2EHMA-2-ethylhexyl methacrylate; IBOA-isobornyl acrylate; 2HEA-hydroxyethyl acrylate; 4HBA-4-hydroxybutyl acrylate ; ACMO-acryloylmorpholine; GMA-glycidyl methacrylate; NNDMA-N,N-dimethylacrylamide; ACM-acrylamide; Methylpropane tris(3-mercaptopropionate); PE-1-the secondary mercaptan produced by Japan Showa Denko Co., Ltd. is PE-1; IEM-2-isocyanatoethyl methacrylate; Karenz MOI-The model produced by Japan Showa ...
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Abstract
The invention discloses a high-filling OCA optical glue and an OCA optical film, the raw materials of the OCA optical glue comprise a polymer, and also comprise at least two components of a solvent, a cross-linking agent, a photoinitiator and an antioxidant, the polymer has a weight-average molecular weight of 100000-2000000 Dalton and a glass transition temperature of the polymer is in a range of-60-0 DEG C, the solvent is at least one selected from a group consisting of a solvent, a cross-linking agent, a photoinitiator and an antioxidant, and the cross-linking agent is at least one selected from a group consisting of a solvent, a cross-linking agent, a photoinitiator and an antioxidant. The intrinsic viscosity of the polymer is in the range of 0.30-0.70, and the polymer is obtained by polymerizing the following raw materials in parts by weight: 40-80 parts of a low-Tg long-branched chain (methyl) acrylate monomer, 10-40 parts of a high-Tg (methyl) acrylate monomer, 1-15 parts of a hydroxyl-containing (methyl) acrylate monomer, 1-20 parts of a functional acrylate monomer and 0.1-5 parts of a branched monomer. The prepared adhesive film reaches high industrial standards in properties such as fitting, filling, transportation and storage, anti-bubble inhibition and the like, and is also suitable for filling more complex designs with large depth, such as hole filling, curved surfaces, flexible electronic equipment and other scenes.
Description
technical field [0001] The invention relates to the technical field of glue, in particular to a highly filling OCA optical glue and an OCA optical adhesive film. Background technique [0002] Optical clear adhesive OCA (optical clear adhesive) is a new type of material used in LCD-based display devices to perform composite functions such as light transmission, light uniformity, enhanced display, and protection. According to the product form, OCA in a broad sense can be divided into OCR (optical transparent resin), OCA (optical transparent film) and LOCA (liquid optical glue-currently tending to inkjet printing OCA). The earliest OCA was proposed by Hitachi Chemical in the form of OCR, and later developed into the mainstream OCA film product on the market by Minnesota Mining and Manufacturing (3M) Company of the United States and Mitsubishi Chemical Company of Japan (the patent close to the present invention is WO2011129200A1 , US20030064188A1, WO2009131792A1, US5520978A, CN...
Claims
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IPC IPC(8): C09J133/08C09J7/30C09J7/40C08F220/18C08F220/10C08F220/20C08F220/56C08F222/24C08F220/36C08F220/28C08F220/58C08F220/54C08F220/32C08F220/06
CPCC09J133/26C09J133/24C09J133/068C09J7/30C09J7/403C08F220/1808C08F220/1804C08F220/10C08F220/20C08F220/56C08F222/104C08F220/36C08F220/286C08F220/1811C08F220/58C08F220/54C08F220/325C08F220/06Y02E10/50
Inventor 崔巍孙立天杨春强
Owner SUZHOU FINESET MATERIAL TECH CO LTD