Synthesis of Imide-Siloxane and Amide-Siloxane Copolymers.
ARMY WEAPONS COMMAND ROCK ISLAND ILL GENERAL THOMAS J RODMAN LAB
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The synthesis of copolymers is described in which disiloxane units are alternated with imide or amide units along the main polymer chains. Through the synthesized products met the goals of improved thermal stability and crosslinkability, neither remained rubbery to low enough temperatures. The procedure has two advantages compared to other methods 1 the thermally rigorous imidization occurs independently of the polymerization process, and 2 only one organic material, which is stable in air, needs to be purified. The relatively inert disilane requires no special procedures to protect its purity, and exacting procedures are unnecessary to ensure that stoichiometric quantities are present and react to form high molecular weight polymer. Infrared spectra of the polymers and their precursor silyl derivatives correspond well with those of other similar compounds. Modified author abstract Portions of this document are not fully legible.
- Organic Chemistry