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PT Portugues 日本語ページはございません。 日本 日本 ASK Chemicals Search Main navigation Foundry Cold Box Binder Systems Product Finder Cold Box PU Technology Our Brands ECOCURE BLUE LFSPAC No-Bake Binder Systems Product Finder No-Bake Technology Our Brands INOTEC - Inorganic binder system Product Finder INOTEC Technology INOTEC - technological advantages INOTEC - economic advantages INOTEC - ecological advantages INOBAKE - Inorganic No-Bake Binder Product Finder INOBAKE Technology Coatings Product Finder Coating Technology Our Brands Additives Product Finder Additive Technology Uncoated Castings Lithium free Additives Risers & Sleeves Product Finder Experience Expert Feeding Solution EXACTCAST mini-risers EXACTCAST Riser Sleeves & Auxiliary Products Formulations EXACTCAST riser data for simulation Filters Product Finder EXACTPORE 3D Filters UDICELL Filters EXACTFLO Filters UDICELL Investment Casting Filters Auxiliaries & Release Agents Release Agents Adhesives Cleaners Other Auxiliaries Metallurgy Products Product Finder New Generation of Mold Inoculants Master alloys Cored wire Inoculants Mold Inoculants Pre-conditioners Melt cleaners Design Services Arena-flow® Software From Concept to Design Simulation Services Core Production Expertise & Quality Our Offer Services Success stories Industrial Friction Selector Guide Wear Resistant Friction Resins Refractory Product Advisor Technical Bulletins Success stories Paints & Coatings Product Finder Paints & Coatings Architectural Coatings Can Coatings Wood Coatings Industrial Coatings Protective Coatings Conductive Coatings Additives Fertilizer Coatings General Industrial Latex, textile and special paper applications Carbon Products Resins For Jointing Compounds Toll Manufacturing Innovation Highlights 3D Binder Systems Environment Efficiency & Performance Optimizing costs in use Controlled release fertilizer coating Support Online Academy Live Webinars On Demand Webinars ASK the Expert Ask your question All Questions Casting defect prevention Product usage Environment Profitability Digital Services ASKNow Mobile Download Windows Download ASK Vista Tutorials & Videos White Paper Reduction of VOC emissions New Emission Limits User Manual Professional Articles MAGNASET 2.0 Fluorine-free Riser Filter - Process improvement Release Agents - Correct Classification Filter - Reducing costs in large castings Coatings Saving Potential Sand Binder Systems More Technical Paper Brochures Quality Management Sales Terms & Conditions of Purchase Company History Sustainability Diversity Compliance Quality and environmental certificates News Press releases Shows & Events Career Our Vacancies Your New Employer ASK & ME Our Expert&＃039;s Voice Your Start Your Application Contacts Get in touch with us Foundry Chemicals Locations Paint & Coating Industrial Controlled release fertilizer coating www.ask-chemicals.com Paints & Coatings Fertilizer Coatings ASKOCOAT 2K PU resins for controlled release fertilizers ASK Chemicals offers a 2K PU resin system for the production of polymer coated controlled release fertilizers based on all kind of granules.The patented coating system consists of two components, a polyol and an isocyanate. The polyol is a modified solvent-free polyol formulation containing more than 60 % renewable raw materials. The isocyanate component is a modified isocyanate formulation including a bench life extender to achieve a controllable reaction in the mixing equipment. Both components are solvent-free and contain only reactive ingredients to prevent leach out of coating chemicals into the soil.The fertilizer granules are coated at ambient to moderate temperatures in a drum mixer. Therefore, also granules with lower melting points like urea, can be coated with this technology. The resin system shows a homogeneous distribution without any defects on all kind of granules. The curing reaction takes place by a polyaddition reaction and is catalyzed by addition of a gaseous or liquid amine to the resin system. Using a liquid amine with high flash points prevents the use of ATEX equipment. A spray curing process secures optimal catalyst distribution. The coatings process is very fast and efficient, the typical curing time for one layer is below two minutes to be tack free.The ASKOCOATTM system is especially designed for fertilizer coatings to achieve excellent adjustable release properties. Water is able to slowly penetrate through the coating layers into the granule and dissolves the nutrients of the fertilizer granule. The nutrients are released due to osmosis. The release time of nutrients is controlled by coating thickness and temperature. Thinner coatings for example and  warmer temperatures result in faster release. The release time can be adjusted from 2 to 24 months depending on the quantity of coating material. The patented ASKOCOATTM system increases the stability and elasticity of the coated fertilizer and prevents salt stress caused by uncontrolled release of nutrients. ASKOCOAT resin for controlled release fertilizers - gas curing Name ASKOCOAT 420 / 500 EN request further information CATALYST 704 EN request further information ASKOCOAT resin for controlled release fertilizers - spray curing Name ASKOCOAT 420 / 500 EN request further information CATALYST 806 EN request further information Fertilizer coating brochure: ASKOCOAT (PDF, 8 MB) FoundryIndustrialPaints & CoatingsInnovationSupport   CompanyCareerContacts Follow us on: Service navigation Sales Terms & Conditions ASK News Data Protection Disclaimer Imprint & Trademarks © ASK Chemicals 2024