Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Patent
1988-07-22
1991-06-11
Miller, Edward A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
528 14, 528 33, 501 88, 501 95, C08G 7704
Patent
active
050233076
ABSTRACT:
A process for the preparation of a methylpolysilane having a controllable rheology, including a controllable glass transition temperature is provided which includes the steps of heating together at least one alkoxy-functional disilane selected from the group consisting of disilane having three and four alkoxy groups bonded to the silicon atoms, and mixtures thereof, with an amount of a dialkoxy disilane effective to control the glass transition temperature of the resulting polymer within the range of from about 0.degree. to about 200.degree. C. The reaction is carried out in the presence of a catalyst which is a source of alkoxide ions to catalyze the redistribution reaction. The redistribution reaction produces oligomer and longer chain polymeric silanes having greater than seven silicon atoms in the polymer chain. Methylpolysilanes formed in accordance with the practice of the present invention may then be readily formed into fibers by a conventional spinning process. Alternatively, the methylpolysilanes of the present invention may also find use as binders, coatings, and films for ceramic compositions. The methylpolysilanes may be pyrolyzed to form ceramic compositions.
REFERENCES:
patent: Re31447 (1983-11-01), Baney et al.
patent: 3165494 (1965-01-01), Smith
patent: 4298558 (1981-11-01), Baney et al.
patent: 4310651 (1982-01-01), Baney et al.
patent: 4618551 (1986-10-01), Stolka et al.
patent: 4667046 (1987-05-01), Frey et al.
Ryan et al, 84 J. Amer. Chem. Soc. 4730 (1962).
Watanabe et al, J.C.S. Chem. Comm. 534 (1977).
Watanabe et al, J.C.S. Chem. Comm. 704 (1977).
Watanabe et al, 128 J. Organometallic Chem. 173 (1977).
Watanabe et al, J.C.S. Chem. Comm. 1029 (1978).
Watanabe et al, 218 J. Organometallic Chem. 27 (1981).
Watanabe et al, 244 J. Organometallic Chem. 329 (1983).
Atwell et al, 7 J. Organometallic Chem. 71 (1967).
Dow Corning Corporation
Miller Edward A.
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