TRANSLATE PAYMENT ORDER PRODUCTS SECTORS TECHNICAL INTERNATIONAL NEWS ABOUT CONTACT COVID-19 Blocked Isocyanates Blocked Isocyanates DOWNLOAD DATASHEET DESCRIPTION Leeson Polyurethanes Ltd. produce a range of blocked isocyanate systems. The range aims to overcome some of the limitations with traditional PU technology, namely: TRADITIONAL LIMITATIONS OF PU TECHNOLOGY Stability in 1K systems Pot life restrictions in 2K systems Sensitivity to moisture, both ambient and trace levels in raw materials Increasing concern regarding free isocyanate levels in systems BENEFITS OF LEESON’S BLOCKED ISOCYANATE RANGE A range of blocking agents available to give different unblocking temperatures Aliphatic based technology, giving excellent UV colour stability Flexible Formulation approach, offering tailored solutions to customers Products compatible with polyester, urethane and acrylic resins Range of DMP based technology offers lower unblocking temperatures DOWNLOAD DATASHEET CONTACT US FOR MORE INFORMATION PRODUCT SPECIFICATIONS Product: Leeson Blocked Isocyanates – 1 Component TYPICAL APPLICATIONS OEM – coil coating; automotive coatings; electrostatic coatings; white goods. PRODUCTS INCLUDED IN THIS SYSTEM Range of products depending on the customers’ requirements Detailed guidance available on request. IMPORTANT NOTE Leeson Polyurethane’s products are guaranteed against defective materials and manufacture and are sold subject to its standard Terms and Conditions of Sale, copies of which can be obtained on request. Download Brochure DOWNLOAD DATASHEET CONTACT US FOR MORE INFORMATION PRODUCT RANGE OVERVIEW PROPERTY PU5207 PU5208 PU5209 PU5210 PU5211 Appearance Clear straw liquid Clear straw liquid Clear straw liquid Clear straw liquid Clear straw liquid Viscosity at 25˚C (mPa.s) ≤1000 900 – 1300 2050 – 2450 3200 – 3800 1300 – 1500 Density at 25˚C (g/cm³) 1.0 – 1.1 1.0 – 1.1 1.0 – 1.1 1.0 – 1.1 1.0 – 1.1 Solids content (%) 68 – 72 68 – 72 68 – 72 63 – 73 68 – 72 Isocyanate type HMDI Trimer HDI Biuret HDI Biuret IPDI Trimer HMDI Trimer Solvent 1-Methoxy-2- Propanol 1-Methoxy-2- Propanol Naphtha B Naphtha B Butyl acetate 1-Methoxy-2- Propanol Flashpoint – closed cup (˚C) 31 31 48 22 31 Boiling point (˚C) 120 120 135 126 120 Apparent % NCO (as supplied) 10.12 10.2 10.2 7.9 10.5 Apparent eq. wt. (as supplied) 415 410 410 530 400 Blocking agent 3,5-dimethylpryazole 3,5-dimethylpryazole 3,5-dimethylpryazole 3,5-dimethylpryazole Methyl ethyl Ketoxime Application Automotive & Coil Coating Coil Coil & Electrostatic Automotive & Coil Coating Automotive & Coil Coating FURTHER INFORMATION The Leeson Polyurethane range includes 4 blocking agents, allowing customers to choose the temperature (and also the isocyanates), they wish to use. Detailed below are the 4 blocking agents used within our range. Blocking Agent Unblocking Range (°C) Diethyl malonate (DEM) 100-120 Dimethyl pyrazole (DMP) 110-120 Methylethyl ketoxime (MEKO) 140-160 ε-Caprolactam (ε-CAP) 160-180 HOW DOES THE TECHNOLOGY WORK? During manufacture, we react the blocking agent onto the isocyanate. This gives an inert and non hazardous material, at standard ambient temperatures. The blocked isocyanate can be compounded into suitable coating systems, which are applied and dried. Once cured at the correct unblocking temperature, the isocyanate is able to react with the functional co-binder polymer, to give a final cross linking cure. FOR MORE INFORMATION To ensure you are specifying a fit for purpose system for your application please consult our Area Sales Manager for your area or visit our website. Other Resin Bond Products: Resin Bound Surfaces BBA Approved LeesonBound MORE DETAILS PU Anti-Skid for Roads Grip 2-1 MORE DETAILS PU Binders for Wet Pour MORE DETAILS Watertite Roof Waterproofing System MORE DETAILS Other Polyurethanes Coatings Products: Resin Bound Surfaces BBA Approved LeesonBound MORE DETAILS PU Anti-Skid for Roads Grip 2-1 MORE DETAILS PU Binders for Wet Pour MORE DETAILS Watertite Roof Waterproofing System MORE DETAILS Other Coatings Products: Resin Bound Surfaces BBA Approved LeesonBound MORE DETAILS PU Anti-Skid for Roads Grip 2-1 MORE DETAILS PU Binders for Wet Pour MORE DETAILS Watertite Roof Waterproofing System MORE DETAILS QUICK LINKS Industrial Coatings Technical Information International Services Latest News About Leeson Polyurethanes Contact Us GET IN TOUCH Leeson Polyurethanes Ltd Hermes Close Tachbrook Park Warwick CV34 6RP United Kingdom Sales / General Enquiries: sales@lpultd.com Tel: 00 44 (0) 1926 833367 Fax: 00 44 (0) 1926 881469 Follow us on Linked In Follow us on Twitter Your Name (required) Your Email (required) Phone Your Message *We, Leeson Polyurethanes Ltd will hold your name and email address in order to send you our newsletter. 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