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1 Head Office Nihonbashi Mitsui Tower, 1-1, Nihonbashi-Muromachi 2-chome, Chuo-ku, Tokyo , JAPAN ADHESIVES & SOLUTIONS DEPT TEL FAX Shibukawa Plant 1135 Nakamura Shibukawa city, Gunma , JAPAN TEL FAX NOTICE The information contained in this brochure is presented for the purpose of generally advising potential customers of Denka about the basic description, properties and characteristics of various Denka products (hereinafter, Product Information ). Denka does not guarantee or assure the overall accuracy or completeness of the Product Information in this brochure. Nothing in this brochure can be considered an expressed or implied guarantee or obligation of Denka with respect to the Product Information or its use, including, but not limited to, any guarantee of merchantability, fitness for the particular purpose, or infringement of any intellectual property rights. Each user of the Product Information and Denka products assumes its own responsibility to properly determine the manner and suitability of use of the Product Information and Denka products in its own operations. The user should exercise proper care in considering the Material Safety Data Sheet, Product Information and any other technical information provided by Denka, including the descriptions of use conditions, warnings and precautionary instructions. Denka reserves the right to change the Product Information from time to time at its discretion and without notice. Please note the mill ownership etc. enough. URL : http//

2 Application Camera lens adhesion HARDLOC OP/UV Series is extensively used as an adhesive for optical lens and parts such as cameras and electronic devices. Video camera lens adhesion Features of the Products HARDLOC OP/UV series are UV curing adhesives, which were developed by DENKA s original technology. The HARDLOC OP/UV series shows some excellent physical characteristics. The HARDLOC OP/UV series can limit strain on the adherend because the cured resin is very flexible and the shrinkage ratio is small. The HARDLOC OP/UV series excels in optical characteristics like transmittance, index of refraction etc. The HARDLOC OP/UV series can cure even in the presence of oxygen. The HARDLOC OP/UV series excels in heat and cold resistance. It is easy to adjust the viscosity and to match the optical axis when the lens is bonded, because it does not harden if not irradiated by ultraviolet rays. Boosts working efficiency The HARDLOC OP/UV series can cure in seconds if exposed to UV light, therefore working efficiency will increase greatly. Single component liquid Contents OP-River Type-II OP Technical Data OP Grade Feature of the Products Application It is not necessary to mixes. Improves the workshop environment UV Grade You can improve the workshop environment because the HARDLOC OP/UV series does not have a solvent and the odor is weak. UV Technical Data Application The mode of packing is different according to the product. How to Use

3 OP Grade OP Series Every grades has differet the adhesion performance durability and the workability. Please inquire the details of the person in charge. Features of adhesives before curing Features of adhesives after curing Grade Base resin Viscosity [mpa.s] [at25] Specific gravity of liquid [at25] Index of refraction [nd] Set time [sec.] Hardness [Shore] Shrinkage ratio [%] Glass transition temperature [] Index of refraction [nd] Elongation percentage [%] [at23] Young s modulus [MPa] [at23] Packaging Color Main features Parts or sections to be bonded OP Grade OP-12Z OP-13Z D-35 D Standard Standard OP Grade OP-15Z D Standard OP-12K D Heat resistance OP-13K D Heat resistance OP-145K D Heat resistance OP-1L Polyenepolythiol A g Transparent Flexibility Cure in second Optical lens and optical parts OP-112LN 1, D Flexibility Low fluorescence OP A Flexibility high degree of resistance to mousture high refraction index OP , A Flexibility high degree of resistance to mousture high refraction index OP-154 4, A Flexibility little shrinkage ratio OP-193R A OP-2, A High viscosity little shrinkage ratio

4 OP Technical Data Physical Characteristics of the OP Series OP-River Type- Physical Characteristics of OP-River Type OP Technical Data Exposure condition : 85, 85% RH, up to 5 hrs. Adherends : TEMPAX Glass/TEMPAX Glass *2 (*2: Registered trademark) Bonded area : 3.125cm 2 MPa Durability (at high temperature and high humidity) hrexposure time MPa UV-light irradiation amount and curing property Adherends : Glass/Glass Bonded area : cm 2 Irradiator : Black Light Illuminance : 3mW/cm 2 (365 nm) mj/cm 2 Integrated irradiation amount Adhesiveness for various adherends OP-River Type is a releasing agent, which was developed to peel the cured resin from a lens. Features It can be peeled off in a short time (about 2-4 minutes). Usage It is a suitable parting agent for peeling off an organic resin (especially, HARDLOC OP/UV) that adhesive to glass. General Features Appearance Odor Specific gravity Cambridge blue transparent liquid Present Spectral transmittance 9 Light transmittance Specimen : Quartz glass/adhesive/quartz glass Ref : Purified water Bonded thickness : 2m Wavelength Glass-glass Untreated Glass-aluminum Metal sanding Glass-copper Glass-steel Glass-ABS Glass-polycarbonate Glass-PVC Glass-polystyrene Untreated Metal sanding is treated with sandblast OP-13MViscosity measured with EM-type viscometer mpasviscosity Adherends Bonded area : cm 2 MPa Changes in viscosity vs. storage temperature Surface treatment Notice Peeling method The liquid is alkaline, a solvent with strong polarity is used, and please take particular notice of the following points during use: 1) Since it is highly volatile, please close it properly and store in a cool dark place. 2) Please wear protective polyethylene gloves and glasses, etc. when handling. 3) Please use a container with a polyethylene or stainless steel lid before use. 4) Please wash promptly with water and soap if it comes in contact with the skin. 5) Even small amounts are very dangerous if it enters the eye. Please wash with large amounts of water, and consult a doctor at once. 1.Peeling method by hot plate heating 1) The joint lens is put on the pre-heated hot plate (3-35) for a fixed time (5-1minutes). Note 1. If the peeling phenomenon (turning white or cloudy) does not start within 15 minutes, turn the lens around, and observe it. Note 2. The temperature is set not to exceed 35. If the temperature increases, it becomes yellow during the peeling phenomenon, and OP-RIVER TYPE II becomes insoluble and hardens. 2) Fix the lens on the one side, and hit the lens on the other side with a wooden hammer. 2.Method of washing lens surface After peeling, immerse for one hour in HARDLOC OP-RIVER II, and wash with water. (*Don t heat to dry, but please wipe the moisture off with non-fibrous paper. The paper can also be soaked in acetone or alcohol before wiping. ) OP-River Type-II DayStorage time

5 UV Grade List of adhesiveness of UV Product type Viscosity [mpa.s] [at 25] Specific gravity of liquid [at 25] Refraction index [ndat 25] Shrinkage ratio [%] Hardness [] [Shore] T [] Storage modulus [MPa] [at 23] Features Parts or sections to be bonded Grade Glass Zinc die-casting [ZnDC2] Magnesium die-casting [MgDC2] Aluminum [] Polycarbonate [PC] Polyester [PET] Poly phenyl sal fayd [PPS] Liquid crystal polymer Polyarylate [Par] FRP Cycloolefin polymer [COP] Acrylic Series UVX-7 5, D , Low shrinkage, heat-resistant UVX-7 UVX-852KL 12, D , UVX-852KL UVX , D , shock UVX-8527 UVX , D-82 2,4 UVX-8536 UVX-84 8, D-89 4, Adhesive to resin, glass ens module UVX-84 UVX-8 3, D , UVX-8 UVX , D , UVX-883 UVX-92 47, >D , UVX-92 UVX- 1, D-68 1,2 Heat-resistant,durable, transparent Bondin for optical fiber UVX- UV Grade UVX-337P UVX-824 1,2 16, D-72 D Heat-resistant,durable, transparent Adhesive to resin, transparent Bonding for Prism Bonding for COP,PAR UVX-337P UVX-824 UV Grade

6 UV Technical Data Physical Characteristics of UV Series Durability (at high temperature and high humidity) Heat resistance (measured during heating) Light transmittance Adhesive : UVX- Exposure condition : 85, 85% RH, up to 5 hrs. Adherends : TEMPAX Glass/TEMPAX Glass*1 *1: Registered trademark Bonded area : 8mm(=.5cm 2 ) Bonded thickness : m MPa UVX hrexposure time Adhesive : UVX-7,UVX-8, UVX-92 Ambient temperatures of measurement : -4, 23, and *1) Exposure time: 3min. Adherends : Zinc die-casting/zinc die-casting Bonded area : 14 mm 2 Bonded thickness : m MPa Tensile strength UVX-7 UVX-8 UVX-92 Others Ambient temperature Adhesives : UVX- Specimen : plate glass/adhesive/white plate glass Ref : Purified water Film adhesive thickness : 2m How to Use Spectral transmittance Wavelength Moisture resistance (PCT) UV-light irradiation amount and curing property UV Technical Data Adhesive : UVX- Exposure conditions : PCT 121, % RH, 2 atm, 48h Adherends : TEMPAX Glass/TEMPAX Glass *2 *2: Registered trademark Bonded area : 8 mm (=.5cm 2 ) Bonded thickness : m MPa hrexposure time Adhesive : UVX- Adherends : TEMPAX Glass/TEMPAX Glass *2 *2: Registered trademark Bonded area : 8 mm(=.5 cm 2 ) Bonded thickness : m Irradiator : Black light Illuminance : 5 mw/cm 2 (365nm) MPa Illuminance: 5 mw/cm 2 (365nm) UVX UV light source Typical curing condition Shelf life General UV light source with 365 nm UV light such as metal halide lamp, high pressure mercury arc lamp, and black light are suitable. Recommended energy to complete curing is between 2, to 3, mj/cm 2. However, the curing condition depends on the bonded thickness and the light transmittance of the substrate. So, please make sure that the curing condition is good by actual end use tests. [Notes] UV energy (mj/cm 2 )=Intensity of the light source(mw/cm 2 ) Exposure time(s). For example, if the intensity of the light source is mw/cm 2 and it is exposed for 25 seconds, then the total UV energy would be 2,5 mj/cm 2. Please kindly contact DENKA Japan for further assistance as our product range is comprehensive and each grade differs from one and another. UV Technical Data How to Use. 1 1 mj/cm 2 Integrated irradiation amount