Accession Number : AD0683282

Title :   HIGH MOLECULAR CHELATES OF THE SCHIFF-BASE AND THEIR THERMOSTABILITY,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Tsao Meng-Chun, ; Sha Jen-Yu, ; Yu Min, ; Huang Pao-T'ung,

Report Date : 13 SEP 1968

Pagination or Media Count : 15

Abstract : The preparations of chelate polymers from acetylacetone (pentanedione-2, 4)chelate compounds of Ni(II), Cu(II) and Cd(II) with bis-Schiff bases are reported. These polymer products are colored powders insoluble in benzene, ether, ethanol, and other common organic solvents. The molecular weight of these polymers has not been determined, in fact, they can not even be estimated by the use of elemental analysis data. Thermal stability of chelate compounds varies according to the various metals involved. Ni(II) chelates are stable above 360C. Cu(II) chelates have the lowest thermal stability and lose their weight at a temperature of 260C. The thermal weight-loss curves of Zn(II) and Cd(II) chelate polymers are more complicated. The thermal stability of chelate compounds also varies according to various monomers.

Descriptors :   (*CHELATE COMPOUNDS, *POLYMERS), (*PENTANONES, CHELATE COMPOUNDS), THERMAL STABILITY, SOLUBILITY, NICKEL COMPOUNDS, COPPER COMPOUNDS, CADMIUM COMPOUNDS, CHINA

Subject Categories : Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE