Method and apparatus for preparing organic silazane polymer and

Details Method and apparatus for preparing organic silazane polymer and Method and apparatus for preparing organic silazane polymer and

1990-07-17

1992-10-20

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

528 33, 528 38, C08G 7704

Patent

active

051570963

ABSTRACT:
An organic silazane polymer is prepared by passing a silazane compound in por form through a hollow tube heated at 400.degree. to 700.degree. C. for activation and thermally polymerizing the silazane compound in a liquid phase. Inorganic fibers can be prepared from the organic silazane polymer by melt spinning, infusibilizing, and sintering. An apparatus for preparing an organic silazane polymer is also provided, comprising a heated reactor vessel for evaporating and thermally polymerizing a silazane compound, a heated hollow tube in flow communication with said reactor vessel for receiving the silazane compound vapor and heating it at 400.degree. to 700.degree. C. for activation, and a conduit, with a condenser for condensing the vapor, for feeding the condensed silazane compound back to the reactor.

REFERENCES:
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patent: 4543344 (1985-09-01), Cannady
patent: 4650773 (1987-03-01), Okamura et al.
patent: 4761389 (1988-08-01), Rabe et al.
patent: 4937304 (1990-06-01), Ayama et al.
patent: 4992523 (1991-02-01), Bacque et al.

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