UV-curable adhesive composition for compact discs
A kind of adhesive, UV-technology, applied in the direction of non-polymer organic compound adhesives, adhesives, optical recording/reproduction, etc., can solve the problems of easy generation of bubbles, failure to provide, high resistance, etc., to achieve high reliability effect
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Embodiment 1
[0025] In a reactor equipped with a stirrer and a thermometer, 50 parts of bisphenol A diglycidyl ether diacrylate (trade name CNUVE151, manufactured by Sartomer), 10 parts of isobornyl acrylate (IBOA, SR506), 5 parts of ethoxy Trimethylolpropane triacrylate (EO-TMPTA, SR454), 25 parts of tricyclodecane dimethylol diacrylate (SR833S, R-684), 10 parts of phenoxyethyl acrylate (R-561 ), 3 parts of 2,4,6-(trimethylbenzoyl) diphenylphosphine oxide (TPO, DAROCUR TPO), 1 part of γ-methacryloxypropyl trimethoxysilane (Silquest A-174 Silane), and dissolved at 60°C for 1 hour to prepare the UV-curable adhesive composition of the present invention. The prepared UV-curable adhesive composition of the present invention has a viscosity of 500 MPa·s at 25° C. (measured by a NDJ-5S viscometer).
[0026] According to the following DVD9 conventional bonding steps 1-4, the silver alloy semi-permeable film reflective film substrate and the silicon dioxide / zinc oxide protective inorganic film s...
Embodiment 2-6
[0031] Embodiment 2-6, comparative example 1-3
[0032] UV-curable adhesive compositions of Examples 2-6 and Comparative Examples 1-3 were prepared in the same manner as Example 1. The discs were bonded in the same manner as in Example 1.
[0033] Among them, comparative examples 1-3 are UV curable adhesives currently used in industry to bond metals.
[0034] The ratio of each component of the UV-curable adhesive composition of each embodiment is shown in Table 1: the numbers in Table 1 represent the number of parts, and the abbreviations of each component are as follows:
[0035] CNUVE151: bisphenol A diglycidyl ether diacrylate obtained from Sartomer CO., LTD
[0036] SR454: Ethoxylated trimethylolpropane triacrylate obtained from Sartomer CO., LTD
[0037] R-684: Tricyclodecane dimethylol diacrylate, available from NIPPON KAYAKU CO., LTD
[0038] R-561: Phenoxyethyl acrylate, available from NIPPON KAYAKU CO., LTD
[0039]DAROCUR TPO: 2,4,6-(trimethylbenzoyl)diphenylpho...
Embodiment 7
[0075] The UV-curable composition prepared in Example 1 was used to bond the two substrates following DVD-R Bonding General Procedures 1-4 below.
[0076] 1. According to a conventional method, a DVD-R pigment layer is formed on a PC substrate with a thickness of 0.6 mm, and grooves are formed on it using a conventional method of DVD-R standards.
[0077] 2. Sputter silver alloy TTP-40A (obtained from Target Technology Company LLC) on the substrate forming the pigment layer, and form the pigment layer thereon, so that the average film thickness on the DVD-R pigment layer is 50-60nm.
[0078] 3. Apply 1.5 g of the UV-curable composition of Example 1 around the silver alloy reflective film formed as above on the circular substrate. A 0.6 mm thick PC substrate was placed thereon and spin-coated at 2000 rpm for 4 seconds to make them adhere. The film thickness of the UV-curable composition was made to be 45-50 μm. An apparatus manufactured by OriginELECTRLC CO.LTD was used as th...
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