Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 1436-59-5, C6H14N2. A document type is Patent, introducing its new discovery., HPLC of Formula: C6H14N2
Processes for preparing bis(urea-urethane) compounds wherein R1 is alkyl, aryl, arylalkyl, or alkylaryl, R2 is alkylene, arylene, arylalkylene, or alkylarylene, R3 is alkylene, arylene, arylalkylene, or alkylarylene, and R4 is hydrogen or alkyl, comprising: (1) first bring to a reaction temperature of about 20-125 C. a reaction mixture comprising monoalcohol reactant R1?OH and diisocyanate reactant OCN?R2?NCO, the monoalcohol being present in an amount of about 0.8-1.2 moles monoalcohol per mole diisocyanate, the monoalcohol and diisocyanate reactants being admixed in a solvent, the reactants and solvent being present in relative amounts of at least about 1 milliliter solvent per millimole diisocyanate, the reaction temperature continuing until reaction between the monoalcohol and the diisocyanate is complete; and (2) subsequent to step (1), adding to the reaction mixture diamine without isolating the reaction product of step (1), thereby forming compound of the formula in desirably high yield and purity.
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