DEVELOPMENT OF A TRANSPARENT PRESERVATIVE COMPOUND FOR AIRCRAFT STRUCTURAL METALS
TRACOR INC AUSTIN TX
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The major effort in this quarter was expended on reactions of amines with formaldehyde. Four classes of products were produced 1 white, insoluble, infusible polymers from reaction of piperazine and formaldehyde 2 rubbery, somewhat hydrocarbon soluble polymers from hexamethylenediamine and formaldehyde 3 low molecular weight polymers from cyclohexylamine and formaldehyde and 4 a low molecular weight polymer from N,N- diisopropylhexamethylenediamine and formaldehyde which exhibited very good hydrocarbon solubility. This polymer could be cast into a film but the film proved to be unstable when allowed to stand overnight in air. The amine reactant was synthesized in this laboratory and chosen because it is expected to overcome the crosslinking problem encountered with hexamethylenediamine. It is concluded that the N-C-N structure is indeed associated with good aliphatic hydrocarbon solubility. However, what is needed is the right combination of molecular weight as high as possible with perhaps a little crosslinking and solubility.
- Polymer Chemistry