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Title: Diorganosilacetylene-alt-diorganosilvinylene polymers and a process densifying porous silicon-carbide bodies

Patent ·
OSTI ID:869303
 [1];  [1];  [1]
  1. Ames, IA
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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=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.

Research Organization:
Ames Laboratory (AMES), Ames, IA; Iowa State Univ., Ames, IA (United States)
DOE Contract Number:
W-7405-ENG-82
Assignee:
Iowa State University Research Foundation, Inc. (Ames, IA)
Patent Number(s):
US 5312649
Application Number:
08/073,589
OSTI ID:
869303
Country of Publication:
United States
Language:
English

References (4)

Thermal and catalytic polymerization of diethynyldiphenylsilane journal March 1991
Exploring novel silicon-containing polymers---From preceramic polymers to conducting polymers with nonlinear optical properties report October 1991
Efficient, “one-pot” synthesis of silylene–acetylene and disilylene–acetylene preceramic polymers from trichloroethylene journal April 1990
Synthesis and study of silylene-diacetylene polymers journal October 1990

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Related Subjects

diorganosilacetylene-alt-diorganosilvinylene
polymers
process
densifying
porous
silicon-carbide
bodies
provides
linear
organosilicon
including
acetylene
vinylene
moieties
preparation
represented
formula
si-c
tbd
c-
si-ch
ch-
n-
gtoreq
independently
selected
consisting
hydrogen
halogen
alkyl
alkenyl
aryl
aralkyl
radicals
soluble
organic
solvents
air
stable
pulled
fibers
cast
films
thermally
converted
silicon
carbide
ceramic
materials
linear polymers
provides linear
organic solvents
independently selected
ceramic material
porous silicon
organic solvent
silicon carbide
ceramic materials
polymers including
vinylene moieties
carbide ceramic
aralkyl radicals
air stable
organosilicon polymers
thermally converted
linear organosilicon
diorganosilacetylene-alt-diorganosilvinylene polymers
including acetylene
organosilicon polymer
alkyl radical
ceramic mater
carbide bodies
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