Accession Number : AD0274489

Title :   SYNTHESIS OF ELASTOMERS CONTAINING SI-N BONDS IN THE MAIN CHAIN

Corporate Author : MIDWEST RESEARCH INST KANSAS CITY MO

Personal Author(s) : BREED,L.W. ; ELLIOTT,R.L.

Report Date : 31 MAR 1962

Pagination or Media Count : 1

Abstract : The preparation of several new ethylene-bridged trisilazane monomers and intermediates is reported. Additional examination of the polymerization of these monomers and monomers described in earlier reports has not revealed a method for preparing polymeric materials with intrinsic viscosities greater than about 0.2. Unsuccessful attempts were made to increase the degree of polymerization by modification of the polymerization temperature, solvent, and catalyst. The effect of purity of the chlorosilanes used in the monomer synthesis was also studied; and the presence of small quantities of chlorotrimethylsilane was not a significant factor in limiting the polymer mol-wt. (Author)

Descriptors :   *ELASTOMERS, *HEAT RESISTANT PLASTICS, *NITROGEN COMPOUNDS, *SILICON COMPOUNDS, AMIDES, AZIDES, CHEMICAL ANALYSIS, CHLORINE COMPOUNDS, CYCLOHEXANES, CYCLOPENTANES, INFRARED SPECTROSCOPY, METHYL RADICALS, MOLECULAR STRUCTURE, MOLECULAR WEIGHT, PHENYL RADICALS, POLYMERIZATION, POLYMERS, PROPYL RADICALS, SILANES, SYNTHESIS, VISCOSITY

Distribution Statement : APPROVED FOR PUBLIC RELEASE