Corporation bayhydur xp7007, a modified aliphatic isocyanate trimer was used for crosslinking xm4316 in one study, and another pur prepared via isocyanate chemistry designated xp4 was used for further comparison to xm4316. The aromatic isocyanates tdi and mdi are more reactive and more economical to use than aliphatic hdi. Obtain certification and receipts of proper disposal from contractor. Subsequent phosgenation yields an aromatic isocyanate product mix largely corresponding to the composition of the polyamine. Depending on the type of isocyanate, the type of alcohol, catalysts and other additives used, a wide variety of products can be formed such as those mentioned above. Read through all the steps before starting procedure. Pigments were obtained from commercial suppliers such as bayer, cabot, dupont and basf.
If temporary control of isocyanate vapor is required, a blanket of protein foam may be placed over the spill. Tpu preparation the polyol was charged into a resin flask, heated to 105110degreesc and vacuum dried for 1. Chemical product and company identification chemical name. Pentamethylene diisocyanate pdi, a new biobased aliphatic isocyanate designed for polyurethane coatings, is expected to be made commercially available in 2015 7. In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Aliphatic polyisocyanate hardener based on hexamethylene. Some major aliphatic isocyanates comprise of hexamethylene diisocyanate hdi and dicyclohexylmethane 4,4diisocyanate h12mdi. Material safety data sheet lapolla isocyanate lpaiso. Familiarize yourself with the key values, benefits and end market approaches of aliphatic isocyanates in polyurethane adhesives.
Dicyclohexylmethane diisocyanate prepolymer repeated exposure specific target organ toxicity 2. Isocyanates are a family of highly reactive, low molecular weight chemicals. This guide will apprise you with aliphatic isocyanates and their development which has extended the possibilities offered by polyurethane adhesives in terms of both performance and formulation flexibility. Aliphatic polyisocyanates 1525 ne ne not established specific chemical identity is withheld as a trade secret hexamethylene diisocyanate 822060 safety data sheet version. The dow chemical company dow sells dow 3019 isocyanate only for use by trained building contractors and spray foam insulation applicators. Your new online msds binder is a place for you to store the material safety data sheets you need to deploy. Other companies are charging thousands of dollars to set up accounts and give you access to their msds online database. Environmental protection agency office of pollution prevention and toxics 401 m street, s. Handling and storage handling general advice if bulging of drum occurs, transfer to well ventilated area, puncture to relieve pressure, open vent, and let stand for 48 hours before resealing. Typically, a mixture consisting of mdi and its oligomers is produced. For example, aromatic isocyanates are typically unblocked at lower temperatures than those required to. Science applications international corporation 11251 roger bacon drive reston, virginia 20190 may 1, 1997 revised june 2005 see editors note epa contract no. Polyurethane adhesives based on aliphatic isocyanates exhibit supreme mechanical properties, good weathering resistance, durability, color stability, bonding to various substrates, and are user friendly as they dont release carcinogenic amines.
This product is suitable for industrial high performance coatings for wood, metal, plastics, and equipment. The fast crosslinking with polyisocyanate resins occurs under the influence of moisture by releasing the original diamine. Basonat hi series offers excellent gloss retention and light stability with outstanding weather, chemical, and abrasion resistance. Product safety assessment mdibased isocyanate products. There is a potential for workplace exposure to dow 3019 isocyanate in industrial, commercial, construction, or manufacturing settings. The hard segment is defined as the chain extenderisocyanate reaction product, and the soft segment is defined as the polyolisocyanate reaction product. Issue date 12152014 9462 south 560 west sandy, utah 84070 section 1. The american chemistry councils aliphatic diisocyanates. Diisocyanates are manufactured for the production of polyurethanes, a class of polymers isocyanates should not be confused with cyanate esters. Decontaminate area using waterammonia solution with 12% added detergent, letting it stand over affected area for at least 10 minutes. Blocked isocyanate an overview sciencedirect topics. Page 4 lpa isocyanate msds lpa isocyanate continued rev. Large quantities may be pumped into closed but not sealed containers for disposal. Isocyanates can be aromatic, like tdi and mdi, or aliphatic like hdi.
Aliphatic diisocyanates adi are specialty intermediate chemicals used primarily to make durable coatings, adhesives, sealants, elastomers, and textiles, among other products. Skin designation methyl isocyanate cas 624839 can be absorbed through the skin. Individuals with lung or breathing problems or prior reactions to isocyanates must not be exposed to vapors or spray mist of this product. Aliphatic polyisocyanate resin polymer 15 40 72259735 nbutyl acetate 5 10 123864. They are widely used in the manufacture of flexible and rigid foams, fibers, coatings such as paints and varnishes, and elastomers, and are increasingly used in the automobile industry, autobody repair, and building insulation materials. Contact a licensed hazardous waste disposal contractor for neutralization and proper disposal of isocyanate, neutralizing or rinsing liquids, and containers. Isocyanate is the functional group with the formula r. This action plan addresses the use of methylene diphenyl diisocyanate mdi and related compounds see appendix 1 in products that may result in consumer and general population. Guidance for working with march 201648148r 1r1 aliphatic. Organic compounds that contain an isocyanate group are referred to as isocyanates.
Homopolymer of hexamethylene diisocyanate 40 60 28182812 aliphatic polyisocyanate resin polymer 15 40 72259735 nbutyl acetate 5 10 123864 light aromatic solvent naphtha 3 7 64742956 1,2,4trimethylbenzene 1 5 95636 isophorone diisocyanate 0. Extreme care must be used in handling these materials and a msds from the manufacturer has to be consulted. Generally, they are considered to be specialty materials used in significantly smaller. Blocked isocyanates are typically manufactured from hydrogencontaining compounds such as phenol, ethyl acetoacetate and. Solution of 1, 6hexamethylene diisocyanate based biuret polyisocyanate synonyms. Msds 12 dupont performance coatings january 1, 2008. An organic compound with two isocyanate groups is known as a diisocyanate. Methylene diphenyl diisocyanate mdi and related compounds. It exhibits excellent resistance to salt spray, water soak and humidity. Isocyanates are extremely reactive and also toxic compounds. Aliphatic isocyanates, including hdi, hdi trimer, hmdi,hdi biuret, ipdi. Hazards identification respiratory tract inhalation lungs, respiratory tract inhalation eye irritant skin sensitization respiratory sensitization single exposure safety data sheet. Aliphatic polyisocyanate for lightfast and weatherresistant twopack polyurethane coatings. Examples of aliphatic diisocyanates include isophorone diisocyanate ipdi, hexamethylene diisocyanate hdi, and bis4isocyanatocyclohexylmethane h 12 mdi figure 3.
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