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