what kind of glue is mdi glue

MDI ecological adhesive is a downstream product of MDI for building materials used to make a variety of boards. The use of MDI ecological adhesive to make it into a sheet, not only solves the overdevelopment of forest resources, but also because it does not contain formaldehyde, is conducive to people's home health, will be expected to develop into the most market development potential and industrialization prospects of the product.
MDI is a general term for diphenylmethane diisocyanate (pure MDI), a mixture containing a certain proportion of pure MDI and polyphenyl polymethylene polyisocyanate (polymerized MDI), and a modification of pure MDI and polymerized MDI, which is the most important raw material for the production of polyurethane, and a small amount of MDI is used in other aspects except polyurethane. Polyurethane not only has the elasticity of rubber, but also the strength of plastic and excellent processing performance, especially in heat insulation, sound insulation, wear resistance, oil resistance, elasticity and other synthetic materials can not be compared with the advantages, is the sixth largest plastic after polyethylene, polyvinyl chloride, polypropylene, polystyrene and ABS. It has been widely used in national defense, aerospace, light industry, chemical industry, petroleum, textile, transportation, automobile, medical and other fields, and has become an indispensable emerging material for economic development and people's life.
MDI and TDI are substitutes for each other and are both raw materials for the production of polyurethane. At present, the price of MDI is slightly more expensive, and the molding property of polyurethane products formed by MDI is relatively good.
Chemical name: diphenylmethane diisocyanate

Product categories: pure MDI, polymerized MDI, liquefied MDI, modified MDI, etc.
Physical properties:
Pure MDI: white to slightly yellow crystal at room temperature, storage temperature is below 5 degrees, shelf life is three months, the packaging is generally 250 kg iron drum filled with nitrogen packaging (tank truck filled with nitrogen shelf life of 10 days).
Polymerized MDI: colorless brown liquid, stored at room temperature, shelf life of two years, generally 250kg iron drum filled with nitrogen packaging.
Existing technology: At present, the popular MDI production method in the world is basically based on aniline as raw material, and then reduced to form crude MDI products by phosgene method, and then separated from pure MDI and polymerized MDI by fractionation device.