Melamine formaldehyde resin
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Is there any way to stop the reaction between melamine and formaldehyde to form melamine-formaldehyde resin at a certain molecular weight range? And restart the reaction under certain conditions?
Reply 1# scmslg The polymerization reaction of polymers involves risks, and it is necessary to consider controlling the polymerization rate and degree during design； For a given polymerization reaction, at a specified degree of polymerization or molecular weight, by controlling the appropriate reaction temperature and pressure, adding suitable initiators and terminators, and following a continuous process designed for a particular product grade, it is generally only possible to produce that designated grade under the specified process conditions. The batch polymerization process is quite flexible; it can be adjusted as needed to produce products according to the formulations for different grades. Both have their advantages and disadvantages!