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1�1 <br />MR 12293L <br />Isophthalic Corrosion Resistant Laminating Resin <br />MR 12293L is an isophthalic polyester resin based on MR 14042 specially formulated for use <br />in hand lay-up, spray -up and filament winding corrosion resistant applications. The resin is pre - <br />promoted and thixotropic. MR 12293L is excellent for applications requiring chemical resis- <br />tance with recommendations listed based on laboratory tests and field results. Confirming tests <br />under the actual exposure conditions are recommended where variations from test conditions <br />are encountered. <br />TYPICAL PROPERTIES OF LIQUID RESIN <br />Brookfield Viscosity, 25°C., cps 400 <br />Specific Gravity, 25°C. 1.04 <br />Thixotropic Index 2.0 <br />Color Hazy Pink <br />Uncatalyzed Stability, Min. Months@ 25°C. 3 <br />TYPICAL CURING PROPERTIES <br />Gel Time Data (1% ME KP -60,250C.) <br />Gel Time, Minutes 14 <br />Peak Exotherm, °C. 177 <br />Total Time to Peak, Minutes 25 <br />TYPICAL PROPERTIES OF 1/8" UNFILLED CA6TING <br />Flexural Strength, psi. 18,400 <br />Flexural Modulus, psi. x 106 0.50 <br />Tensile Strength, psi. 10,000 <br />Barcol Hardness 45 <br />Heat Distortion Temp., °C. 98 <br />Water Absorption, 24 Hrs., 25°C., % 0.20 <br />Elongation, % 2.4 <br />Chemical resistance of glass reinforced polyester laminates depends on the polyester resin <br />protecting the fiber glass reinforcement, thereby maintaining the laminate integrity. Variables <br />in construction and curing the laminate, stress conditions in service and operating conditions <br />are extremely important, therefore, proper fabrication techniques as specified by the National <br />Bureau of Standards P. S. 15-69 should be employed to obtain adequate service life. <br />Results obtained with this data cannot be guaranteed and final determination of the suitability <br />of any information or material for the use contemplated or the manner of use is the sole re- <br />sponsibility of the user. <br />it 1605 West Elizabeth Ave., Linden, NJ 07036 (201) $62-5600 <br />Oivision of United States Steel <br />10/78 <br />USS is a registered trademark <br />