Accession Number : AD0285523

Title :   DEVELOPMENT OF A TRANSPARENT PRESERVATIVE COMPOUND FOR AIRCRAFT STRUCTURAL METALS

Corporate Author : TRACOR INC AUSTIN TEX

Personal Author(s) : ANNAND,ROBERT R. ; PAYNE,JIMMIE S. JR.

Report Date : 18 SEP 1962

Pagination or Media Count : 10

Abstract : The ultimate objective of this research is to obtain transparent, hydrocarbon-soluble polymers containing the N-C-N structure. By reacting paraformaldehyde with hexamethylenediamine, two polymeric products were obtained. B OTH ARE SOLUBLE IN HYDROCARBONS. One of these products, having a molecular weight of 4400, was cast in a film which is not destroyed by immersion in water overnight. This film is readily stripped from the metal by benzene, but not so readily by cyclohexane. Other products of lower molecular weight were obtained. In all cases where the N-C-N structure was clearly demonstrable (IR spectra), hydrocarbon solubility was very high. The chain terminating reactions which prevent formation of long chains appear to involve ketimine and enamine formation. The nature of the reaction is becoming evident, but techniques for consistently obtaining a desirable chain length are yet to be developed. (Author)

Descriptors :   *AIRCRAFT FINISHES, *PLASTIC COATINGS, *POLYMERS, AIRPLANE PANELS, CHEMICAL REACTIONS, COATINGS, FILMS, FORMALDEHYDE, LIGHT TRANSMISSION, METALS, METHANES (1 C), OPTICAL MATERIALS, ORGANIC SOLVENTS, SOLUBILITY

Distribution Statement : APPROVED FOR PUBLIC RELEASE