DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click
HERE to register or log in.
Accession Number:
AD0600247
Title:
Development of Low-Density High Strength Foamed Plastics via Ionic Polymerization
Descriptive Note:
[Technical Report, Technical Report]
Corporate Author:
ATLANTIC RESEARCH CORP ALEXANDRIA VA
Report Date:
1964-03-01
Pagination or Media Count:
45
Abstract:
Equimolecular mixtures of mono- or di-allyl ethers of trimethylolpropane and sulfur monochloride gave tough, spongy foams when reacted in a halogenated solvent, which also acted as a blowing agent. Reaction was rapid at room temperature, but quite slow at 0 deg F. A number of vinyl alkyl and divinyl ethers were evaluated using cationic catalysts and chlorinated solvents as blowing agents at room temperature. Foams were obtained in a number of cases, and the flexibility of the foams was related to the ratio of the mono-vinyl to the divinyl ether. The foams were quite spongy and friable. Use 3,4-dihydro2H-pyran-2-methanol as a co-monomer with vinyl ethers gave moderately strong, lightweight foams.
Distribution Statement:
[A, Approved For Public Release]