Accession Number : AD0600247

Title :   Development of Low-Density High Strength Foamed Plastics via Ionic Polymerization.

Descriptive Note : Technical rept.

Corporate Author : ATLANTIC RESEARCH CORP ALEXANDRIA VA

Report Date : MAR 1964

Pagination or Media Count : 41

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 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. (Author)

Descriptors :   (*EXPANDED PLASTICS, PREPARATION), (*VINYL PLASTICS, EXPANDED PLASTICS), ETHERS, POLYMERIZATION, CARBINOLS, COPOLYMERIZATION, FOAM, PHYSICAL PROPERTIES, DENSITY, TENSILE PROPERTIES, CATALYSIS, IONS, FREE RADICALS, OXYGEN HETEROCYCLIC COMPOUNDS

Distribution Statement : APPROVED FOR PUBLIC RELEASE