Polyurethane amine is an important polymer material that usually requiresCatalystto promote its synthesis process. Commonly used polyurethaneAmine catalystIncludes the following types:
1 , Organotin compounds: Organotin compounds such as dimethyl stannous dibutyrate (DBTDL), di(2-ethylhexyl) stannous dibutyrate (DEHP), etc. are commonly used as catalysts for polyurethane amines. They are often used as tin catalysts to promote the reaction of isocyanates and polyols in polyurethane synthesis.
2. Organolithium compounds: Organolithium compounds such as butyllithium and isolithium Butyllithium, etc. can also be used as catalysts for polyurethane amines. They are often used in ring-opening polymerization reactions, such as in the synthesis of polycarbonate.
3. Organic lead compounds: Organic lead compounds such as diisopropionyl Oxide (DIBP) and tetramethyl lead (TMPB) can be used as catalysts for the synthesis of polyurethane amines.
4. Amino compounds: some amino compounds, such as methylamine, ethanol Diamines, etc., can also be used in the catalysis of polyurethane amines, usually in reactions with isocyanates.
5. Alkaline catalyst: Alkaline catalyst such as triethylamine (TEA) ), tetraethylamine (TETA), etc. can also be used in some polyurethane amine reactions, especially to adjust the properties of materials.
The choice of catalyst depends on the specific synthesis reaction and the desired polyurethane amine Material properties. When using catalysts, reaction conditions need to be carefully controlled to ensure the quality and performance of the resulting product. In addition, the type and amount of catalyst may vary depending on the application. Therefore, it is very important to choose the appropriate catalyst in polyurethane amine synthesis.
