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MICURE® BC-120 Boron Trichloride Amine Complex Latent Curing Agent and Accelerator for Epoxy Resins DESCRIPTION OMICURE BC-120, a Lewis Acid, is intended for use as aroom temperature latent, elevated temperature catalytic curing agent for epoxy resins. BC-120, in combination with liquid epoxies, produces clear homogeneous formulations. To incorporate BC-120 heat the resin to 30-35°C and stir in the curing agent. When used to cure EPALLOY 7190(DGEBA), where 1 to 9 phr BC-120 are typically used, room temperature shelf lives of greater than one year can be realized. Curing can be accomplished at temperatures above 120°C. Higher temperatures reduce cure times. When using 3 phr BC-120 with 7190, and curing for 2 hours at 150°C, a Tg of 120°C was obtained. Using higher amounts of BC-120, (See Table 1 on the reverse side) will shorten cure times and increase Tg. Higher Tgs can also be achieved by using epoxy novolac resins in place of 7190 (See Table II on the reverse side). BC-120 can also be used as an accelerator in the aromatic amine, acid anhydride or dicyandiamide cure of epoxy resins.The pot lives of these formulations will be significantly longer than those obtained when using BF3 MEA or DMP- 30 as the accelerator. Typically 0.5 to 1.0 phr BC-120 are used for acceleration. APPLICATIONS Castings Potting Adhesives Electric Enamels Filament Winding Pultrusion HEALTH & SAFETY PRECAUTIONS CAUTION: OMICURE BC-120 is a highly acidic material. Avoid contact with skin or eyes as BC-120 may cause irritation and burning. Do not inhale vapors. Use with adequate ventilation. Wash exposed skin and contaminated clothing after handling. OMICURE BC-120 should be stored in tightly closed,acid resistant containers. Avoid exposure to humidity.If upon opening a container, BC-120 is found to be in its solid state, mild heating (about 100°F), in a sealed container, will re-melt the product . Refer to CVC SPECIALTY CHEMICALS, INC. Material Safety Data Sheet on OMICURE BC-120 for additional safety and health information. The MSDS is revised as new data becomes available. TYPICAL PROPERTIES Appearance Waxy solid to liquid Color Tan to Brown Melting Point, °C 25 - 35 Water Content, max % 0.1 pH, max 3 Solubility in EPALLOY 7190 Yes PACKAGING & AVAILABILITY OMICURE BC-120 is supplied in 5 gallon plastic pails with a Reike pour spout. TECHNICAL BULLETIN DISCLAIMER While the information and precautions outlined here are believed to be accurate and complete, CVC Specialty Chemicals makes no warranty regarding these precautions. User assumes full responsibility for determining appropriate application of the product and the necessary precautions to be taken.
