CoatingsPro Magazine

MAR 2015

CoatingsPro offers an in-depth look at coatings based on case studies, successful business operation, new products, industry news, and the safe and profitable use of coatings and equipment.

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82 MARCH 2015 COATINGSPROMAG.COM Industry Insight P olyurethane and polyaspar- tic coatings are increasingly being used in the corrosion and construction protec- tion markets because they provide a unique combination of weatherability along with chemical-, abrasion-, and corrosion-resistance. T hese high-per for mance coating technolog ies' unique combination of physica l and chemica l proper ties is possible because of a d iverse raw mater ia l selection. T his a l lows them to be used in many protective appli- cations, inc lud ing on automobi les, wood, coi l, texti les, and plastic. T heir desirable attr ibutes lead to their w idespread acceptance across protec- tive markets. T he four lead ing poly urethane and polyaspar tic coatings technolo - g ies are moisture-cure poly urethanes, t wo -component (2K ) solvent- bor ne poly urethanes, 2K a liphatic water-bor ne poly urethanes, and 2K polyaspar tics. Coating applicators and specif iers are using these coating technolog ies, especia l ly when a high durabi lit y yet aesthetica l ly pleasing f inish is needed. But the application of these t y pes of coatings requires safe hand ling due to the a liphatic isoc yanate used as a common cross-linker. Safety Measures Tese products can be used safely when the recommended safety measures, such as engineering controls, personal protective equipment (PPE), and safe handling procedures, are implemented. Recommended safety measures may vary by type of application (e.g., spray or roller). Because isoc yanates have the potentia l to ir r itate and sensitize the applicator, it is impor tant that proper steps be ta ken to prevent sk in contact w ith and inha lation of vapors/aerosols (e.g., spray mist). Safe hand ling recommendations, training , and on-site monitor ing are compo - nents of some isoc yanate suppliers' product safet y prog rams. Te appropriate engineering controls, PPE, and handling procedures are important to ensure the safe use and handling of materials contain- ing isocyanates and polyisocyanates. Inhalation exposure is possible, partic- ularly when isocyanate containing materials are sprayed or heated. Engineer ing controls, such as ventilation, are necessar y if the above applications are being per for med. Mitigation of possible hea lth effects from inha lation ex posure is further accomplished through the use of appropr iate respirator y equipment. Similarly, mitigation of possible hea lth effects from sk in and eye ex posure is accomplished through the use of appropr iate gloves and gog gles. T he supplier of the coatings mater ia ls w ill list recommended safe use and hand ling procedures, which can be referenced on the product safet y data sheet (SDS). Safe use recommendations for handling isocyanates include the following steps: • Personnel who will be handling isocyanate-containing materials need to be trained in the proper safe use and handling procedures. • Appropriate engineering controls must be in place (e.g., local exhaust ventilation). • Required personal protective equip- ment must be worn at all times (e.g., respirators, clothing, and chemi- cal-resistant gloves, as stated in the supplier's SDS). • Medical personnel should be immediately contacted if an individ- ual suspects overexposure. • Monitoring of the work environment should be performed to determine the airborne levels of isocyanate and to ensure that the appropriate PPE, including respirators, are provided to employees. Safety First Tese coating technologies, when professionally applied, have been used safely for more than 40 years when recommended safety measures are implemented. Tey can ofer durable, high-performance outcomes, but they should always be applied using safe and " best industry" practices. Te industry has proactively developed many product stewardship resources, which contractors can use to educate themselves and their employees about safe handling practices. CP By Steven Reinstadtler, Coatings Marketing Manager, Construction and Sustainability for Bayer MaterialScience LLC Safe Handling With High-Performance Coatings

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