Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Patent
1987-08-25
1989-01-24
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
501 88, 528 32, 528 33, 528 34, 528 35, 556430, 556431, C08G 7700
Patent
active
048002216
ABSTRACT:
Preceramic polymers composed of [R.sub.2 SiC.tbd.CSiR.sub.2 ] and, optionally, [R.sub.2 Si] units are described where R is hydrogen, an alkyl radicals containing 1 to 8 carbon atoms, phenyl radicals, or vinyl radicals. These preceramic polymers may be converted into silicon carbide-containing ceramic materials by pyrolysis at elevated temperatures.
REFERENCES:
patent: 4052430 (1977-10-01), Yajima
patent: 4100233 (1978-07-01), Yajima
patent: 4310651 (1982-01-01), Baney et al.
patent: 4312970 (1982-01-01), Gaul
patent: 4340619 (1982-07-01), Gaul
Vol. 67, Chemical Abstracts, 54,483m (1967).
Vol. 75, Chemical Abstracts, 118,650 p. (1971).
Bittell James E.
Dow Corning Corporation
Marquis Melvyn I.
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