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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

Inactive Publication Date: 2010-10-13
上海拓引数码技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the material used for the semi-transparent reflective film becomes easily oxidized silver or silver alloy, the binder component used for the material is generally hydrophobic and low-concentration ions, and has a high resistance. When the optical disc manufacturing equipment manufactures DVDs, the applied voltage cannot provide enough current to prevent air bubbles from being generated, so air bubbles are easily generated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention provides a UV-curable adhesive composition for compact discs, which consists of bisphenol epoxy acrylate (A), acrylate compound (B) and photopolymerization initiator (C), wherein the acrylate compound (B) consists of iso-Bornyl acryl (B-1) and at least one of the following acrylate compounds: phenoxyethyl acrylate (B-2), tricyclodecane dihydroxymethyl diacrylate (B-3), ethoxylated trihydroxymethyl tricrylate (B-4), dipropylene glycol diacrylate (B-5) and enthyl hexyl acrylate (B-6). The composition can be utilized to bond two compact disc substrates together to produce a bonded compact disc.

Description

technical field [0001] The invention relates to an optical disc adhesive composition, in particular to an optical disc UV-curable adhesive composition. Background technique [0002] The current digital versatile disc (DVD) can be roughly divided into DVD-ROM and blank DVD. DVD-ROM has already burned information on it when it is made, while blank DVD has no information burned when it is made. Burn the information yourself on the recording layer. According to the structure and capacity, DVD can be divided into: single-sided single-layer structure, DVD5 with a capacity of 5GB; single-sided double-layer structure, DVD9 with a capacity of 9GB; double-sided double-layer structure, DVD10 with a capacity of 10GB; etc. At present, DVD9 is used most, because it can record 2.5 hours of movies. [0003] In DVD9, the two recording layers are usually placed on the upper and lower substrates, the lower recording layer is made into a translucent reflective film, the upper recording layer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/02G11B7/256
Inventor 李恒朱小庆郑飞璠夏芃
Owner 上海拓引数码技术有限公司
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