Diorganosilacetylene-alt-diorganosilvinylene polymers and a proc

Details Diorganosilacetylene-alt-diorganosilvinylene polymers and a proc Diorganosilacetylene-alt-diorganosilvinylene polymers and a proc

1994-02-28

1995-10-10

Nagumo, Mark

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

525275, 525288, 5253265, 526279, C04B 35565

Patent

active

054570743

ABSTRACT:
The present invention provides linear organosilicon polymers including acetylene and vinylene moieties, and a process for their preparation. These diorganosilacetylene-alt-diorganosilvinylene linear polymers can be represented by the formula: --[--(R.sup.1)(R.sup.2)Si--C.tbd.C--(R.sup.3)(R.sup.4)Si--CH.dbd.CH--].sub .n --, wherein n.gtoreq.2; and each R.sup.1, R.sup.2, R.sup.3, and R.sup.4 is independently selected from the group consisting of hydrogen, halogen, alkyl, alkenyl, aryl, and aralkyl radicals. The polymers are soluble in organic solvents, air stable, and can be pulled into fibers or cast into films. They can be thermally converted into silicon carbide ceramic materials.

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