Accession Number : AD0634143

Title :   PHYSICAL AND RHEOLOGICAL PROPERTIES OF NITROSO RUBBERS.

Descriptive Note : Quarterly rept. no. 10, 25 Sep-24 Dec 65,

Corporate Author : MONSANTO RESEARCH CORP DAYTON OHIO

Personal Author(s) : Ball III, George L. ; Salyer,I. O. ; Pustinger,J. V.

Report Date : 12 JAN 1966

Pagination or Media Count : 26

Abstract : Characterization of a trifluoronitrosomethane/tetrafluoroethylene copolymer was continued. The CF3NO/C2F4 copolymer was found to be adaptable to elution fractionation in a perfluorocyclic ether and a benzotrifluoride system, even though 85% of the polymer eluted in a narrow viscosity range of 1.3 to 2.0. Values of K and K' of the copolymer in FC-75 were confirmed to be 0.353 and 0.147, respectively. Thermal decomposition in air and in an inert gas was shown to be identical. The glass transition of the copolymer, as measured by DTA, is in the region of -41 C to -46C with no more than 2C difference between production lots. The white insoluble material present in the production lots was identified to be basic magnesium carbonate trihydrate. (Author)

Descriptors :   (*SYNTHETIC RUBBER, PHYSICAL PROPERTIES), (*ORGANIC NITROGEN COMPOUNDS, POLYMERS), (*HALOGENATED HYDROCARBONS, POLYMERS), FLUORINE COMPOUNDS, METHANE, ETHYLENES, COPOLYMERIZATION, CHEMICAL ANALYSIS, SOLVENTS, VISCOSITY, PYROLYSIS, GLASS, TRANSITION TEMPERATURE, DIFFERENTIAL THERMAL ANALYSIS, IMPURITIES, NUCLEAR MAGNETIC RESONANCE

Subject Categories : Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE